Title: CA $125 Cheap Flights from Washington (WAS) to Seattle (SEA) - Expedia.ca ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $125 Cheap Flights from Washington (WAS) to Seattle (SEA) [View CA $125 flight on Sun, Feb 8, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:BWI,to:SEA,departure:08/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:124.20&airProductToken=AQpoCjIIwYIBEgQyMzE2GMFFIOKaASjC0YQDMKbShAM4QkAAWAFqBUJBU0lDcghPVkFaWk5CVgoyCMGCARIEMTU1ORjimgEgkgEo99KEAzDd1YQDOEJAAVgBagVCQVNJQ3IIT1ZBWlpOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Washington to Seattle, WA (SEA-Seattle - Tacoma Intl.) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![Sun Country Airlines](https://a.travel-assets.com/air/airlines/sy_sq.svg) Sun Country Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SY"}}]) - ![Frontier Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:was,to:sea,departure:03/11/2025TANYT&leg2=from:sea,to:was,departure:10/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Washington (WAS) to Seattle (SEA) Prices were available within the past 7 days and start at CA $125 for one-way flights and CA $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Thu, Nov 13 - Mon, Nov 17 BWI Baltimore SEA Seattle CA $251 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:13/11/2025TANYT&leg2=from:SEA,to:BWI,departure:17/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:250.80&airProductToken=AQpnCjIIwYIBEgQxNDAzGMFFIKOxASjW-vwCMLv8_AI4QkAAWAFqBUJBU0lDcghPVkFaWk5CVgoxCMGCARIDNzU3GKOxASCSASiT_vwCMKOA_QI4QkABWAFqBUJBU0lDcghPVkFaWk5CVgpoCjIIwYIBEgQxNTU5GJIBIOKaASjPsP0CMPSy_QI4QkAAWAFqBUJBU0lDcghPVkFaWk5CVgoyCMGCARIEMjcxORjimgEgwUUonLT9AjDytP0COEJAAVgBagVCQVNJQ3IIT1ZBWlpOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Feb 13 - Thu, Feb 19 BWI Baltimore SEA Seattle CA $266 Roundtrip found 8 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:13/02/2026TANYT&leg2=from:SEA,to:BWI,departure:19/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:265.50&airProductToken=AQptCjUIxJgBEgQyODcyGMFFIMx8KOeFhQMwmIeFAzhFQABYAWoJTUFJTkJBU0lDcghWQVZOQTBCUQo0CMSYARIDODg5GMx8IJIBKLyIhQMwrIqFAzhFQAFYAWoJTUFJTkJBU0lDcghWQVZOQTBCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Feb 10 - Tue, Feb 17 BWI Baltimore SEA Seattle CA $276 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:10/02/2026TANYT&leg2=from:SEA,to:BWI,departure:17/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:275.30&airProductToken=AQpFCiEIxJgBEgQyNjAxGMFFIOO0ASj044QDMN7khAM4RUAAWAEKIAjEmAESAzczNBjjtAEgkgEoheWEAzDF54QDOEVAAVgBCkUKIAjEmAESAzgxMhiSASDjtAEoiLSFAzCOtoUDOEVAAFgBCiEIxJgBEgQyNDgwGOO0ASDBRSj_toUDMNy3hQM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Feb 13 - Thu, Feb 19 BWI Baltimore SEA Seattle CA $276 Roundtrip found 8 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:13/02/2026TANYT&leg2=from:SEA,to:BWI,departure:19/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:275.50&airProductToken=AQptCjUIxJgBEgQyODcyGMFFIMx8KOeFhQMwmIeFAzhFQABYAWoJTUFJTkJBU0lDcghWQVZOQTBCUQo0CMSYARIDODg5GMx8IJIBKLyIhQMwrIqFAzhFQAFYAWoJTUFJTkJBU0lDcghWQVZOQTBCUQptCjQIxJgBEgM5NDEYkgEgzHwosM2FAzCCz4UDOEVAAFgBaglNQUlOQkFTSUNyCFZBVk5BMEJRCjUIxJgBEgQyOTE4GMx8IMFFKKjQhQMwwtGFAzhFQAFYAWoJTUFJTkJBU0lDcghWQVZOQTBCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sun, Jan 18 - Thu, Jan 22 BWI Baltimore SEA Seattle CA $278 Roundtrip found 17 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:18/01/2026TANYT&leg2=from:SEA,to:BWI,departure:22/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:277.70&airProductToken=AQpoCjIIwYIBEgQyMzE0GMFFIKOxASjZ5YIDMMLnggM4QkAAWAFqBUJBU0lDcghRVkFLWk5CVgoyCMGCARIEMzA3NRijsQEgkgEo7uiCAzD36oIDOEJAAVgBagVCQVNJQ3IIUVZBS1pOQlYKaAoyCMGCARIEMTU1ORiSASDimgEo-ZaDAzCWmYMDOEJAAFgBagVCQVNJQ3IIT1ZBWlpOQlYKMgjBggESBDE0NjQY4poBIMFFKOKagwMwt5uDAzhCQAFYAWoFQkFTSUNyCE9WQVpaTkJWEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Feb 13 - Thu, Feb 19 BWI Baltimore SEA Seattle CA $293 Roundtrip found 8 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:13/02/2026TANYT&leg2=from:SEA,to:BWI,departure:19/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:292.65&airProductToken=AQptCjUIxJgBEgQyODcyGMFFIMx8KOeFhQMwmIeFAzhFQABYAWoJTUFJTkJBU0lDcghWQVZOQTBCUQo0CMSYARIDODg5GMx8IJIBKLyIhQMwrIqFAzhFQAFYAWoJTUFJTkJBU0lDcghWQVZOQTBCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Feb 13 - Tue, Feb 17 BWI Baltimore SEA Seattle CA $295 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:13/02/2026TANYT&leg2=from:SEA,to:BWI,departure:17/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:294.57&airProductToken=AQpvCjYIxJgBEgQyNDgwGMFFIOO0ASiGi4UDMOuLhQM4RUAAWAFqCU1BSU5CQVNJQ3IIWEFWT0EwQlEKNQjEmAESAzU2NRjjtAEgkgEopoyFAzDhjoUDOEVAAVgBaglNQUlOQkFTSUNyCFhBVk9BMEJREgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Jan 8 - Wed, Jan 14 DCA Washington SEA Seattle CA $336 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DCA,to:SEA,departure:08/01/2026TANYT&leg2=from:SEA,to:DCA,departure:14/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:335.40&airProductToken=AQosCioIwaYBEgExGEMgkgEozPGBAzC99IEDOFhAAFgBagJTVnIIT0gyRUFWQk4KLAoqCMGmARIBMhiSASBDKKO5ggMw07uCAzhYQABYAWoCU1ZyCE9IMkVBVkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Sun Country Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SY.GIF) Thu, Nov 13 - Mon, Nov 17 BWI Baltimore SEA Seattle CA $345 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:13/11/2025TANYT&leg2=from:SEA,to:BWI,departure:17/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:344.65&airProductToken=AQpUCigI07IBEgMxOTQYwUUgzHwo3P38AjCC__wCOFZAAFgBcgdWMlFBQ0FZCigI07IBEgMyODUYzHwgkgEoxP_8AjCrgf0COFZAAVgBcgdWMlFBQ0FZEgoIARABGAEqAlNZGAEiBAgBEAEoAigDKAQwDQ) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Wed, Nov 26 - Tue, Dec 2 BWI Baltimore SEA Seattle CA $361 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:SEA,departure:26/11/2025TANYT&leg2=from:SEA,to:BWI,departure:02/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:360.10&airProductToken=AQoiCiAIyIIBEgQ0ODQyGMFFIJIBKIiT_gIw7ZX-AjhVQABYAQoiCiAIyIIBEgQ2NjM1GJIBIMFFKJLZ_gIwwNv-AjhVQABYARIKCAEQARgBKgJIQRgBIgQIARABKAQwAQ) ## Find the cheapest month to fly from Washington (WAS) to Seattle (SEA) ### November is typically the cheapest month to fly From CA $192 - CA $593 per traveller. ## Alternative airports near Seattle Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:SEA,departure:03/11/2025TANYT&leg2=from:SEA,to:IAD,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) SEA Seattle - Tacoma Intl. Cheapest 20 min [Flights from CA $538](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:SEA,departure:03/11/2025TANYT&leg2=from:SEA,to:IAD,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much is a flight from Washington, DC (WAS-All Airports) to Seattle - Tacoma Intl. Airport (SEA)? > Start packing your bags, because round-trip journeys from Washington, DC (WAS-All Airports) to SEA start from CA $251. That's based on airfares available within the last 7 days on Expedia for flights departing within the next year. Prices can move quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Washington, DC (WAS-All Airports) to SEA? > When it comes to cancellation fees, each airline has different terms and conditions. If you decide to cancel your getaway, visit our [Customer Service Portal](https://www.expedia.ca/service/?langid=1033). ### How do I find cheap flights from Washington, DC (WAS-All Airports) to SEA that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Washington, DC (WAS-All Airports) to SEA flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from Washington, DC (WAS-All Airports) to SEA? > The flying distance between Washington, DC (WAS-All Airports) (WAS) and Sea-Tac Airport (SEA) is 3,700 kilometers. Listen to your favorite tunes or read a good book and the journey will fly by. ### Which airlines fly direct from Washington, DC (WAS-All Airports) to Sea-Tac Airport? > Alaska Airlines (AS) is the number one choice for many travelers. It offers 117 flights between Washington, DC (WAS-All Airports) and Sea-Tac Airport each month. You could also check out the fares available with United Airlines (UA). It operates 60 flights every month between Maryland and SeaTac. ### Are Washington, DC (WAS-All Airports) to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute? > Booking your trip from Washington, DC (WAS-All Airports) to Sea-Tac Airport at the last minute could be your ticket to a cheap deal. However, you might miss out on a flight altogether! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia. ## Travel information | Origin airport | Baltimore Washington Intl. Thurgood Marshall | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United | | Roundtrip price | CA $251 | | Distance | 3725 km | ## Book with confidence ### Maryland to Seattle Flights **The easy way to book your flights from Washington to Seattle**  With Expedia, it’s simple to find and book flights to Seattle from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Seattle today, tomorrow, or this week.   **Save dollars with cheap flights from WAS-All Airports, WAS to Seattle - Tacoma Intl., SEA**  Sort your search results by price to find great deals on your flight from Washington to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Washington currently is just CA $251 rising to CA $361.   Here are more money-saving tips:  - Fly in November when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Seattle   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Seattle from Washington**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today. \*Available to Expedia members.