Title: CA $143 Cheap Flights from Detroit (DTT) 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 $143 Cheap Flights from Detroit (DTT) to Seattle (SEA) [View CA $143 flight on Wed, Mar 25, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:DTW,to:SEA,departure:25/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:142.90&airProductToken=AQpDCiAIxnISBDM1NjUY47QBIINpKPrJiAMwz8uIAzhaQABYAQofCMZyEgQ0NTQ1GINpIJIBKO7UiAMwq9aIAzhaQAFYARIKCAEQARgBKgJGORgBIgQIARABKAQwAQ) - [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 Detroit to Seattle, WA (SEA-Seattle - Tacoma Intl.) - ![](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:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](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:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](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:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](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:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](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:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](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:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://a.travel-assets.com/air/airlines/sy_sq.svg) Sun Country Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:DTT,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTT,departure:26/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SY"}}]) - ![](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\* - ![](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\* - ![](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 Detroit (DTT) to Seattle (SEA) Prices were available within the past 7 days and start at CA $143 for one-way flights and CA $267 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Apr 25 - Tue, Apr 28 DTW Detroit SEA Seattle CA $267 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:25/04/2026TANYT&leg2=from:SEA,to:DTW,departure:28/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:266.50&airProductToken=AQowCi4IwaYBEgMzMTMY47QBIJIBKJapiwMwwauLAzhYQABYAWoCU1ZyCE9INUVYVkJOCjAKLgjBpgESAzM4MBiSASDjtAEo4s6LAzDt0IsDOFhAAFgBagJTVnIIT0g1RVhWQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Apr 25 - Tue, Apr 28 DTW Detroit SEA Seattle CA $267 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:25/04/2026TANYT&leg2=from:SEA,to:DTW,departure:28/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:266.50&airProductToken=AQo3CjUIxJgBEgM5NDQY47QBIJIBKO6oiwMwmKuLAzhFQABYAWoJTUFJTkJBU0lDcghWRldTSDNCQwo3CjUIxJgBEgM4MTIYkgEg47QBKIzHiwMwi8mLAzhFQABYAWoJTUFJTkJBU0lDcghWRldTSDNCQxIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Apr 14 - Tue, Apr 21 DTW Detroit SEA Seattle CA $268 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:14/04/2026TANYT&leg2=from:SEA,to:DTW,departure:21/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:267.60&airProductToken=AQoiCiAIxJgBEgM1NjUY47QBIJIBKNiuigMwgbGKAzhFQABYAQoiCiAIxJgBEgM4MTIYkgEg47QBKKz4igMwq_qKAzhFQABYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Tue, Mar 10 - Tue, Mar 24 DTW Detroit SEA Seattle CA $269 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:10/03/2026TANYT&leg2=from:SEA,to:DTW,departure:24/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:268.60&airProductToken=AQojCiEIyIIBEgQ0ODgxGOO0ASCSASjio4cDMJumhwM4VUAAWAEKIwohCMiCARIENjY2MRiSASDjtAEox76IAzDMwIgDOFVAAFgBEgoIARABGAEqAkhBGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Mon, Mar 9 - Tue, Mar 17 DTW Detroit SEA Seattle CA $280 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:09/03/2026TANYT&leg2=from:SEA,to:DTW,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:279.40&airProductToken=AQo3CjUIxJgBEgM1NjUY47QBIJIBKO-ZhwMwm5yHAzhFQABYAWoJTUFJTkJBU0lDcghWRldTQTBCQwo3CjUIxJgBEgM4MTAYkgEg47QBKNf2hwMw0_iHAzhFQABYAWoJTUFJTkJBU0lDcghWRldTSDNCQxIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Apr 25 - Tue, Apr 28 DTW Detroit SEA Seattle CA $280 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:25/04/2026TANYT&leg2=from:SEA,to:DTW,departure:28/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:279.80&airProductToken=AQo3CjUIxJgBEgM5NDQY47QBIJIBKO6oiwMwmKuLAzhFQABYAWoJTUFJTkJBU0lDcghWRldTSDNCQwpvCjUIxJgBEgQxMTIwGJIBIPISKM7KiwMw0MuLAzhFQABYAWoJTUFJTkJBU0lDcghWRldTSDNCQwo2CMSYARIEMjI1NRjyEiDjtAEoxMyLAzCOzosDOEVAAVgBaglNQUlOQkFTSUNyCFZGV1NIM0JDEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, May 2 - Sat, May 9 DTW Detroit SEA Seattle CA $281 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:02/05/2026TANYT&leg2=from:SEA,to:DTW,departure:09/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:280.90&airProductToken=AQpxCjcIxJgBEgQxMDEyGOO0ASCAlQEo9_WLAzC594sDOEVAAFgBaglNQUlOQkFTSUNyCFZGV1NIM0JDCjYIxJgBEgQxNjg0GICVASCSASj894sDMJ36iwM4RUABWAFqCU1BSU5CQVNJQ3IIVkZXU0gzQkMKNwo1CMSYARIDODEyGJIBIOO0ASjOwowDMNTEjAM4RUAAWAFqCU1BSU5CQVNJQ3IIVkZXU0gzQkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Apr 14 - Mon, Apr 20 DTW Detroit SEA Seattle CA $282 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:14/04/2026TANYT&leg2=from:SEA,to:DTW,departure:20/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:281.50&airProductToken=AQoiCiAIxJgBEgM1NjUY47QBIJIBKNiuigMwgbGKAzhFQABYAQoiCiAIxJgBEgM4MTIYkgEg47QBKIztigMwi--KAzhFQABYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Apr 25 - Tue, Apr 28 DTW Detroit SEA Seattle CA $294 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:25/04/2026TANYT&leg2=from:SEA,to:DTW,departure:28/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:293.10&airProductToken=AQpnCjIIwYIBEgQxMjU5GOO0ASCuHCj4o4sDMMykiwM4QkAAWAFqBUJBU0lDcghPVkZLVVNCVgoxCMGCARIEMjc3NRiuHCCSASiOpYsDMKqniwM4QkABWAFqBUJBU0lDcghPVkZLVVNCVgpnCjEIwYIBEgQyNzQxGJIBIK4cKMPKiwMw0cyLAzhCQABYAWoFQkFTSUNyCE9WRktVU0JWCjIIwYIBEgQzMTEwGK4cIOO0ASjezYsDMLzOiwM4QkABWAFqBUJBU0lDcghPVkZLVVNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Apr 13 - Sun, Apr 19 DTW Detroit SEA Seattle CA $442 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:SEA,departure:13/04/2026TANYT&leg2=from:SEA,to:DTW,departure:19/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:441.40&airProductToken=AQprCjQI1YIBEgQ0NzQ5GOO0ASCuHCjVoooDMLSjigM4S0AAWAFqB0VDT05PTVlyCEtBQTJBUURTCjMI1YIBEgQxMTI3GK4cIJIBKN-kigMw96aKAzhLQAFYAWoHRUNPTk9NWXIIS0FBMkFRRFMKagozCNWCARIEMTc2MxiSASCuHCjP6YoDMMrrigM4S0AAWAFqB0VDT05PTVlyCEtBQTJBUURTCjMI1YIBEgMzNDgYrhwg47QBKN_sigMwt-2KAzhLQAFYAWoHRUNPTk9NWXIIS0FBMkFRRFMSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ## 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:DTW,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTW,departure:25/02/2026TANYT&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 $440 ](https://www.expedia.ca/Flights-Search?leg1=from:DTW,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:DTW,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Detroit (DTT) to Seattle (SEA) ### January is typically the cheapest month to fly From CA $193 - CA $544 per traveller. __Flight from Detroit to Seattle (DTW - SEA) route information__ | Origin airport | Detroit Metropolitan Wayne County | | ------------------- | ------------------------------------------------------------------------------------------ | | Destination airport | Seattle - Tacoma Intl. | | Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Sun Country Airlines, United | | Roundtrip price | CA $266 | | Distance | 3074 km | ## Michigan to Seattle Flights **The easy way to book your flights from Detroit to Seattle** With Expedia, it’s simple to find and book flights to Seattle from Detroit 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 Detroit to Seattle today, tomorrow, or this week. **Save dollars with cheap flights from DTT-All Airports, DTT to Seattle - Tacoma Intl., SEA** Sort your search results by price to find great deals on your flight from Detroit to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Detroit currently is just CA $267 rising to CA $442\. Here are more money-saving tips: - Fly in April 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 Detroit** 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.