Flights from Seattle to Washington, D.C.. Use Google Flights to plan your next trip and find cheap one way or round trip flights from Seattle to Washington, D.C.. Find the... Find low fares to top destinations on the official Southwest Airlines website. Book flight reservations, rental cars, and hotels on southwest.com.10:50. Air Tahiti Nui / Operated by Alaska Airlines 1. (DCA to SEA) Track the current status of flights departing from (DCA) Ronald Reagan National Airport and arriving in (SEA) Seattle-Tacoma International Airport. Flights from Seattle (SEA) to Washington (IAD) Origin airport. Seattle - Tacoma Intl. Destination airport. Washington Dulles Intl. Airlines serving. Alaska Airlines, American Airlines, Delta, Sun Country Airlines, United. Popular airline. Apr 15, 2019 · Save 100% on your flight. $2,246. $1,481. per person. Mar 20 - Mar 27. Roundtrip non-stop flight included. Seattle (SEA) to Washington (DCA) There are 15 weekly flights from Seattle/Tacoma to Washington, D.C. (Dulles) on Southwest Airlines. What day has the lowest fares from Seattle/Tacoma to Washington, D.C. (Dulles)? To find the lowest fares by day and time to fly Seattle/Tacoma to Washington, D.C. (Dulles) with Southwest, check out our Low Fare Calendar. Flight to Butte, MT; Flying time from Seattle, WA to Washington, DC. The total flight duration from Seattle, WA to Washington, DC is 4 hours, 29 minutes. This is the average in-air flight time (wheels up to wheels down on the runway) based on actual flights taken over the past year, including routes like SEA to DCA. It covers the entire time on ... $196 Cheap Alaska Airlines flights Seattle (SEA) to Washington (DCA) Prices were available within the past 7 days and start at $196 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. 1 stop. Sat, 7 Sep SEA - SYD with Alaska Airlines. 1 stop. from $1,286. Seattle.$1,449 per passenger.Departing Tue, 3 Dec, returning Sun, 8 Dec.Return flight with Air New Zealand.Outbound indirect flight with Air New Zealand, departs from Sydney on Tue, 3 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Air New ...Roundtrip. Wed, May 8 - Sat, May 11.City Pair Program (CPP) The OMB-designated Best-in-Class City Pair Program procures and manages discounted air passenger transportation services for federal government travelers. At its inception in 1980 this service covered only 11 markets, and now covers over 13,000 markets. Today, CPP offers four different contract fares.$66 Search for cheap flights deals from DCA to SEA (Ronald Reagan Washington National to Seattle - Tacoma Intl.). We offer cheap direct, non-stop flights including one way and roundtrip tickets. ... Amazing DCA to SEA Flight Deals. The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $110 round … Find United Airlines cheap flights from Washington, D.C. to Seattle. Enjoy a Washington, D.C. to Seattle modern flight experience in premium cabins with Wi-Fi. Watch this route. $118RT. Nonstop | Midweek Fare. Seattle, WA (SEA)to Dallas/Fort Worth, TX (DFW) Best Times to Go. Frontier. Find This Deal. $168RT. Nonstop | Midweek Fare.Apr 26, 2024 · Lowest fares from Washington, D.C. to Seattle. Searching for cheap flights from Washington, D.C. to Seattle? Enjoy comfort, premium cabin legroom and free movies with Alaska Airlines. Find the lowest fares today. 60,000 Bonus Miles. Online-only offer. Offers vary elsewhere. Search Alaska Airlines flight schedules & timetables. Find flight departure & arrival times for all Alaska Airlines flights. View airline flight schedules now. Use Google Flights to plan your next trip and find cheap one way or round trip flights from Seattle to anywhere in the world. Find the best flights fast, track prices, and book with confidence. Cheap Flights from Spokane to Washington (GEG-DCA) Prices were available within the past 7 days and start at $158 for one-way flights and $318 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Spokane to Washington with no change fee on selected ... There are 15 weekly flights from Seattle/Tacoma to Washington, D.C. (Dulles) on Southwest Airlines. What day has the lowest fares from Seattle/Tacoma to Washington, D.C. (Dulles)? To find the lowest fares by day and time to fly Seattle/Tacoma to Washington, D.C. (Dulles) with Southwest, check out our Low Fare Calendar. The total flight duration from Washington, DC to Seattle, WA is 5 hours, 17 minutes. This is the average in-air flight time (wheels up to wheels down on the runway) based on actual flights taken over the past year, including routes like DCA to SEA. It covers the entire time on a typical commercial flight including take-off and landing.Pick Dates. Spirit Airlines is one of the most popular airlines used for those traveling from Washington, D.C. to Seattle. Flights on this route from Spirit Airlines typically cost $436.80 RT, a price that is 53% more expensive than the average Washington, D.C. to Seattle flight. The cheapest flight found was $139 RT.Book a Spirit Flight from Seattle (SEA) and Enjoy Our New Fleet! Save Huge with Ultra Low Cost Flights and Start Packing! ... Baltimore, MD / Washington DC AREA (BWI) Depart 06/24/2024. One Way / Economy. Fares From. $167* Viewed 4 hours ago. Book now. Seattle (SEA) to. Dallas (DFW) Depart 05/28/2024. One Way / Economy. Fares …$196 Cheap Alaska Airlines flights Seattle (SEA) to Washington (DCA) Prices were available within the past 7 days and start at $196 for one-way flights and for round trip, for the period specified.My dates are flexible. SHOW FARES. Include Nearby Airports. Search for a Delta flight round-trip, multi-city or more. You choose from over 300 destinations worldwide to find a flight that fits your schedule.Flight deals from Seattle to Washington Dulles. Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Washington Dulles? Find the lowest prices on one …D.C. United vs. Seattle Sounders FC. Sat • Apr 27 • 7:30 PM Audi Field, Washington, DC. Important Event Info: Audi Field is a mobile-only venue. Children 2 and under do not …One of the most popular airlines traveling from Washington, D.C. to Seattle is Frontier. Flights from Frontier traveling this route typically cost $443.80 RT. This price is typically 32% cheaper than other airlines that offer Washington, D.C. to Seattle flights. When booking this route, the cheapest RT price found was $139. Use Google Flights to explore cheap flights to anywhere. Search destinations and track prices to find and book your next flight. Find the best flights fast, track prices, and book with confidence ... There are 5 airlines that fly nonstop from Seattle to Chicago. They are: Alaska Airlines, American Airlines, Delta, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $98 for a one-way flight. On average, the best prices for this route can be found at Alaska Airlines.Washington D.C.. $387 per passenger. Departing Thu, 25 Apr, returning Wed, 1 May. Return flight with Delta. Outbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 25 Apr, arriving in Washington Dulles.The best one-way flight to Washington, D.C. from Seattle in the past 72 hours is $79. The best round-trip flight deal from Seattle to Washington, D.C. found on momondo in the last 72 hours is $167. The fastest flight from Seattle to Washington, D.C. takes 4h 51m. Direct flights go from Seattle to Washington, D.C. every day.Cheap Flights from Seattle to Manila (SEA-MNL) Prices were available within the past 7 days and start at $487 for one-way flights and $799 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Seattle to Manila with no change fee on selected flights. Pick Dates. Spirit Airlines is one of the most popular airlines used for those traveling from Washington, D.C. to Seattle. Flights on this route from Spirit Airlines typically cost $436.80 RT, a price that is 53% more expensive than the average Washington, D.C. to Seattle flight. The cheapest flight found was $139 RT. $196 Cheap Alaska Airlines flights Seattle (SEA) to Washington (DCA) Prices were available within the past 7 days and start at $196 for one-way flights and for round trip, for the period specified.Earn free travel rewards with Orbitz. Fast booking & free cancellations. Reserve now, pay later!$66 Search for cheap flights deals from DCA to SEA (Ronald Reagan Washington National to Seattle - Tacoma Intl.). We offer cheap direct, non-stop flights including one way and roundtrip tickets. ... Amazing DCA to SEA Flight Deals. The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $110 round … On average, a flight to Washington, D.C. costs $357. The cheapest price found on KAYAK in the last 2 weeks cost $19 and departed from Detroit Metropolitan Wayne County Airport. The most popular routes on KAYAK are Los Angeles to Washington, D.C. which costs $394 on average, and Raleigh to Washington, D.C., which costs $629 on average. $66 Search for cheap flights deals from DCA to SEA (Ronald Reagan Washington National to Seattle - Tacoma Intl.). We offer cheap direct, non-stop flights including one way and roundtrip tickets. ... Amazing DCA to SEA Flight Deals. The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $110 round …Cheapest round-trip prices found by our users on KAYAK in the last 72 hours. One-way Round-trip. Grand Rapids 1 stop $310. Traverse City 2 stops $377. Flint 2 stops $510. Lansing 2 stops $387. Kalamazoo 2 stops $242. Bay …Airfares from $85 One Way, $150 Round Trip from Washington to Seattle. Prices starting at $150 for return flights and $85 for one-way flights to Seattle were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Sun, May 5 - Fri, May 17. DCA. Washington.1 stop. from $228. Washington, D.C..$243 per passenger.Departing Tue, Jun 4, returning Tue, Jun 11.Round-trip flight with Alaska Airlines and Frontier Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Tue, Jun 4, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines ...Seattle Tacoma Intl (SEA) - Seattle, WA. Seattle Tacoma Intl (SEA) - Seattle, WA. Arrivals Departures Airport Delay Weather Parking Limos.The usual cost for a one-way flight to Baltimore/Washington Airport is around $19, while a round-trip averages at about $29. Usually, a round-trip ticket to Washington, D.C. costs in the vicinity of $1,146, but there are deals as low as $74.1 stop. from ₹ 6,211. Washington D.C.. ₹ 8,478 per passenger.Departing Mon, 22 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Mon, 22 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From ₹ 8,478, select.$66 Search for cheap flights deals from DCA to SEA (Ronald Reagan Washington National to Seattle - Tacoma Intl.). We offer cheap direct, non-stop flights including one way and roundtrip tickets. ... Amazing DCA to SEA Flight Deals. The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $110 round …Miami (MIA) to. Seattle (SEA) 05/11/24 - 05/18/24. from. $294*. Updated: 5 hours ago. Round trip. I. Economy.6 days ago · One of the most popular airlines traveling from Washington, D.C. to Seattle is Frontier. Flights from Frontier traveling this route typically cost $443.80 RT. This price is typically 32% cheaper than other airlines that offer Washington, D.C. to Seattle flights. When booking this route, the cheapest RT price found was $139. Seattle Tacoma Intl (SEA) - Seattle, WA. Seattle Tacoma Intl (SEA) - Seattle, WA. Arrivals Departures Airport Delay Weather Parking Limos.Pasco/Kennewick to Washington Flights. Departing Jun 04 - Jun 10, 2024. Main Cabin $538. Book. It's the proud capital of the United States of America, a fact that’s abundantly clear every time you visit its glorious monuments. Drive along the Potomac River, take in the majestic Lincoln Memorial, marvel at the stunning simplicity of the ...View Delta's best fares on flights from Seattle for your next getaway. Cradled by mountains and cool waters, stunning nature meets creative cityscapes in the sprawling and colorful Seattle, Washington. This gives visitors flying into Seattle-Tacoma International Airport (SEA) the best of outdoor adventure with the abounding options of a city ...Tips to get cheap flights from Seattle to Washington Dc. Try to book your flight at least 21 days in advance in order to some flight deals which suit your budget. It is recommended to travel on weekdays to avoid weekend surcharges. Avoid flying in heavy traffic by booking your flight before or after major holidays.Cheap Flights from Seattle to Reagan Washington from $135 | (SEA - DCA) - KAYAK. SEA - DCA. Find cheap flights from Seattle to Reagan Washington National Airport from …Mr Sunak warned MPs and peers he expected them to sit through the night on Monday to ensure the Safety of Rwanda Bill passes Credit: Jason Alden/Bloomberg. …1 day ago · Compare cheap flights to Washington, D.C. with Alaska Airlines. Enjoy our low prices and generous experience. Book the lowest fares on Washington, D.C. flights today. Use Google Flights to plan your next trip and find cheap one way or round trip flights from Seattle to anywhere in the world.Book flights from Seattle/Tacoma to Washington, D.C. (Reagan National) with Southwest Airlines ®. It’s easy to find the Seattle-Tacoma International Airport to Ronald Reagan …Singapore Airlines destinations. Flights United States of America. to Washington, D.C. Singapore - Washington, D.C. Travel to Washington, D.C. with Singapore Airlines. Book your flight tickets today, and get ready to enjoy world-class hospitality on your safe and comfortable journey to Washington, D.C..The flight time from Washington to Seattle is 5 hours, 39 minutes. The time spent in the air is 5 hours, 7 minutes. These numbers are averages. In reality, it varies by airline with Alaska being the fastest taking 5 hours, 38 minutes, and Delta the slowest taking 5 …There are 4 airlines that fly nonstop from New York to Seattle. They are: Alaska Airlines, Delta, JetBlue and United Airlines. The cheapest price of all airlines flying this route was found with JetBlue at $124 for a one-way flight. On average, the best prices for this route can be found at JetBlue. Pasco/Kennewick to Washington Flights. Departing Jun 04 - Jun 10, 2024. Main Cabin $538. Book. It's the proud capital of the United States of America, a fact that’s abundantly clear every time you visit its glorious monuments. Drive along the Potomac River, take in the majestic Lincoln Memorial, marvel at the stunning simplicity of the ... Use Google Flights to explore cheap flights to anywhere. Search destinations and track prices to find and book your next flight. Find the best flights fast, track prices, and book with confidence ... Cheap Flights from Seattle to Washington (SEA-WAS) Prices were available within the past 7 days and start at $80 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Seattle to Washington with no change fee on selected ... Washington D.C.. $387 per passenger. Departing Thu, 25 Apr, returning Wed, 1 May. Return flight with Delta. Outbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 25 Apr, arriving in Washington Dulles.Kenmore Air flights from Seattle to Orcas Island, arriving at Eastsound Airport. Explore charming local shops, restaurants and island beauty! VICTORIA, BC SPRING GETAWAY – Mon Tues Wed SALE Flights from $169 pp! Book your flight! Contact Us; 866.435.9524; Email Us; Customer Login; SCHEDULED FLIGHTS.The calculation of flight time is based on the straight line distance from Seattle, WA to Washington, DC ("as the crow flies"), which is about 2,327 miles or 3 745 kilometers. Your trip begins in Seattle, Washington. It ends in Washington, District of Columbia. Your flight direction from Seattle, WA to Washington, DC is East (88 degrees from ...The two airlines most popular with KAYAK users for flights from Detroit to Seattle are Alaska Airlines and Delta. With an average price for the route of $348 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $438 and an overall rating of 8.0.Delta Air Lines. Book a trip. Check in, change seats, track your bag, check flight status, and more.Prices starting at $130 for return flights and $56 for one-way flights to Ronald Reagan Washington National were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Tue, Apr 30 - Mon, May 6. SEA.Find low fares to top destinations on the official Southwest Airlines website. Book flight reservations, rental cars, and hotels on southwest.com. Cheap Flights from Seattle to Washington (SEA-IAD) Prices were available within the past 7 days and start at $139 for one-way flights and $268 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Seattle to Washington with no change fee on selected ... Find cheap flights from Seattle to Washington, D.C. from £111. Return. 1 adult. Economy. 0 bags. Add hotel. Sat 18/5. Sat 25/5. Search. Direct flights only. Search hundreds of …Each day, there are between 4 and 5 nonstop flights that take off from Seattle and land in Raleigh, with an average flight time of 5h 06m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 34 flights. The most frequent day of departure is Saturday, when 15% of all weekly flights depart.Use Google Flights to find cheap departing flights to Cancún and to track prices for specific travel dates for your next getaway.Find flights to Washington, D.C. from £111. Fly from Seattle on Delta, Alaska Airlines, Sun Country Air and more. Search for Washington, D.C. flights on KAYAK now to find the best deal.Mr Sunak warned MPs and peers he expected them to sit through the night on Monday to ensure the Safety of Rwanda Bill passes Credit: Jason Alden/Bloomberg. …There are 2 airlines that fly nonstop from Seattle to Nashville. They are Alaska Airlines and Delta. The cheapest airline for this route is Delta, with the best one-way deal found costing $128. On average, the best prices for this route can be found at Delta.Flights from Washington, DC to Seattle, WA cover the 2316 miles (3736 km) long route taking on average 5 h 58 min with our travel partners like Alaska Airlines, American Airlines or United. You can get the cheapest plane tickets for this route for as low as $97 (€85), but the average price of plane tickets is $242 (€213). ...Find cheap flights from Seattle to Washington Dulles Airport from $101. Round-trip. 1 adult. Economy. 0 bags. Add hotel. sáb. 5/18. sáb. 5/25. Search. Direct flights only. Search …International Routes to and from Seattle For assistance with booking and flight arrangements please contact the domestic and international airlines you are flying with ... Welcome Home. Meet our International Arrivals Facility The Port of Seattle built a new, expanded International Arrivals Facility (IAF) at SEA Airport to meet growing …Jan 5, 2024 · 1 stop. from $228. Washington, D.C..$243 per passenger.Departing Tue, Jun 4, returning Tue, Jun 11.Round-trip flight with Alaska Airlines and Frontier Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Tue, Jun 4, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines ... 1 stop. from $209. Washington, D.C..$227 per passenger.Departing Wed, Aug 21, returning Wed, Sep 4.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Wed, Aug 21, arriving in Washington Ronald Reagan.Inbound indirect flight with Frontier Airlines, departing ...Cheapest round-trip prices found by our users on KAYAK in the last 72 hours. One-way Round-trip. Grand Rapids 1 stop $310. Traverse City 2 stops $377. Flint 2 stops $510. Lansing 2 stops $387. Kalamazoo 2 stops $242. Bay …
There are 15 weekly flights from Seattle/Tacoma to Washington, D.C. (Dulles) on Southwest Airlines. What day has the lowest fares from Seattle/Tacoma to Washington, D.C. (Dulles)? To find the lowest fares by day and time to fly Seattle/Tacoma to Washington, D.C. (Dulles) with Southwest, check out our Low Fare Calendar. . Freeonlinesurveys
Pasco/Kennewick to Washington Flights. Departing Jun 04 - Jun 10, 2024. Main Cabin $538. Book. It's the proud capital of the United States of America, a fact that’s abundantly clear every time you visit its glorious monuments. Drive along the Potomac River, take in the majestic Lincoln Memorial, marvel at the stunning simplicity of the ...Lowest fares from Washington, D.C. to Seattle. Searching for cheap flights from Washington, D.C. to Seattle? Enjoy comfort, premium cabin legroom and free movies with Alaska Airlines. Find the lowest fares today.Book flights from Seattle/Tacoma to Washington, D.C. (Reagan National) with Southwest Airlines ®. It’s easy to find the Seattle-Tacoma International Airport to Ronald Reagan … Use Google Flights to find cheap departing flights to Washington, D.C. and to track prices for specific travel dates for your next getaway. Airport information for your flight from Seattle (SEA) Seattle–Tacoma InternationalAirport (SEA), often referred to as Sea-Tac, is located 12 miles (19 km) south of the city center. Access free airport Wi-Fi while waiting to board your flight from Seattle. The Seattle Airport has a United Club℠ location.The total straight line flight distance from Seattle, WA to Washington, DC is 2,327 miles. This is equivalent to 3 745 kilometers or 2,022 nautical miles. Your trip begins in Seattle, Washington. It ends in Washington, District of Columbia. Your flight direction from Seattle, WA to Washington, DC is East (88 degrees from North).That’s why Sec. Buttigieg says the Biden administration is issuing a new refund rule that will force airlines to automatically refund travelers if their flights are …Book a Spirit Flight from Seattle (SEA) and Enjoy Our New Fleet! Save Huge with Ultra Low Cost Flights and Start Packing! ... Baltimore, MD / Washington DC AREA (BWI) Depart 06/24/2024. One Way / Economy. Fares From. $167* Viewed 4 hours ago. Book now. Seattle (SEA) to. Dallas (DFW) Depart 05/28/2024. One Way / Economy. Fares …Connecting flights between Washington, DC and Seattle, WA. Here is a list of connecting flights from Washington, District of Columbia to Seattle, Washington. This can help you find a one-stop flight with the shortest layover time. We found a total of 24 flights to Seattle, WA with one connection: Airline routes; American Airlines DCA to DFW to SEAFlight deals from Seattle to Washington Dulles. Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Washington Dulles? Find the lowest prices on one …Best Flight Deals to Washington, D.C. with Frontier. From. flight_takeoff. To. flight_land. Budget $ From. To. From Denver, CO (DEN) To Washington, D.C. (DCA) One-way / Economy: Departing Sep 4, 2024: From. $39* Last seen: 15 hours ago *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require …10:50. Air Tahiti Nui / Operated by Alaska Airlines 1. (DCA to SEA) Track the current status of flights departing from (DCA) Ronald Reagan National Airport and arriving in (SEA) Seattle-Tacoma International Airport.Direct. from $84. San Jose Cabo.$97 per passenger.Departing Wed, May 22.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Wed, May 22, arriving in San Jose Cabo.Price includes taxes and charges.From $97, select. San Jose Cabo Mexico. There are 5 airlines that fly nonstop from Seattle to Chicago. They are: Alaska Airlines, American Airlines, Delta, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $98 for a one-way flight. On average, the best prices for this route can be found at Alaska Airlines. Book flights from Seattle/Tacoma to Washington, D.C. (Reagan National) with Southwest Airlines ®. It’s easy to find the Seattle-Tacoma International Airport to Ronald Reagan …April 23, 2024 at 11:05 a.m. EDT. A couple watch an April moon rise in 2021 in New Albany, Ind. (Charlie Riedel/AP) April’s full moon, commonly known as the “pink” … Fall sees many cultural festivals, such as Croatia Fest, Fremont Oktoberfest and TurkFest. Winter highlights include Winterfest, Seattle Boat Show and Wintergrass Bluegrass Festival. Book cheap flights to Seattle (SEA) with United Airlines. Enjoy all the in-flight perks on your Seattle flight, including speed Wi-Fi. Check into a flight. Track a flight. Manage your flights. Book a vacation. JetBlue offers flights to 90+ destinations with free inflight entertainment, free brand-name snacks and drinks, lots of legroom and award-winning service.There are 15 weekly flights from Seattle/Tacoma to Washington, D.C. (Dulles) on Southwest Airlines. What day has the lowest fares from Seattle/Tacoma to Washington, D.C. (Dulles)? To find the lowest fares by day and time to fly Seattle/Tacoma to Washington, D.C. (Dulles) with Southwest, check out our Low Fare Calendar. 1 stop. Fri, May 10 SEA – BWI with Frontier Airlines. 1 stop. from $176. Seattle.$210 per passenger.Departing Sat, Apr 27, returning Fri, May 3.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Sat, Apr 27, arriving in Seattle / Tacoma International ... .