This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
17 Mar — 24 Mar1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Detroit All airports to Seattle/Tacoma Intl are usually found in January or February, booked 74 days in advance, depart on a Saturday or Wednesday and return on a Sunday
Cheap flight deals from Detroit to Seattle
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
Cheapest flights from Detroit to Seattle
Explore the most affordable flight options available from Detroit to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 February 2026.
Fri 24/44:16 p.m.
DTW
-
SEA
1 stop10h 35m
Delta
Sat 25/46:00 a.m.
SEA
-
DTW
Nonstop4h 15m
Delta
Deal found 13/2C$ 282
Fri 24/44:16 p.m.
DTW
-
SEA
1 stop10h 35m
Delta
Tue 28/41:30 p.m.
SEA
-
DTW
1 stop7h 28m
Delta
Deal found 13/2C$ 295
Sat 18/44:55 p.m.
DTW
-
SEA
Nonstop5h 04m
Alaska Airlines
Fri 24/410:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 13/2C$ 302
Wed 18/311:54 a.m.
DTW
-
SEA
1 stop26h 25m
Frontier
Sun 22/39:35 p.m.
SEA
-
DTW
2 stops34h 24m
Frontier
Deal found 13/2C$ 308
Wed 11/38:15 p.m.
DTW
-
SEA
Nonstop5h 00m
Delta
Mon 16/31:32 p.m.
SEA
-
DTW
1 stop7h 27m
Delta
Deal found 13/2C$ 309
Sat 18/44:55 p.m.
DTW
-
SEA
Nonstop5h 04m
Alaska Airlines
Sun 26/410:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 13/2C$ 316
Tue 14/44:30 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Sat 18/46:00 a.m.
SEA
-
DTW
Nonstop4h 15m
Delta
Deal found 11/2C$ 323
Wed 18/311:54 a.m.
DTW
-
SEA
1 stop26h 25m
Multiple Airlines
Sun 22/39:35 p.m.
SEA
-
DTW
1 stop28h 00m
Multiple Airlines
Deal found 13/2C$ 327
Wed 18/34:52 p.m.
DTW
-
SEA
Nonstop5h 04m
Hawaiian Airlines
Sun 22/38:35 a.m.
SEA
-
DTW
Nonstop4h 21m
Hawaiian Airlines
Deal found 13/2C$ 344
Fri 17/47:52 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Thu 30/46:00 a.m.
SEA
-
DTW
Nonstop4h 15m
Delta
Deal found 13/2C$ 350
Wed 6/51:40 p.m.
DTW
-
SEA
2 stops11h 50m
Southwest
Sun 10/55:35 a.m.
SEA
-
DTW
1 stop6h 45m
Southwest
Deal found 14/2C$ 357
Best flights from Detroit to Seattle
Discover carefully curated flight deals from Detroit to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 February 2026.
Wed 15/47:52 p.m.
DTW
-
SEA
Nonstop4h 57m
Delta
Sat 18/410:15 a.m.
SEA
-
DTW
1 stop9h 48m
Delta
Deal found 13/2C$ 282
Thu 23/47:52 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Wed 29/410:15 a.m.
SEA
-
DTW
1 stop9h 48m
Delta
Deal found 13/2C$ 282
Fri 24/47:52 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Mon 27/47:59 p.m.
SEA
-
DTW
1 stop8h 02m
Delta
Deal found 13/2C$ 282
Sun 19/47:52 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Sat 25/411:40 a.m.
SEA
-
DTW
1 stop8h 23m
Delta
Deal found 13/2C$ 282
Wed 15/47:00 a.m.
DTW
-
SEA
1 stop10h 42m
Delta
Sun 19/411:59 p.m.
SEA
-
DTW
1 stop5h 44m
Delta
Deal found 13/2C$ 295
Fri 17/48:15 p.m.
DTW
-
SEA
1 stop6h 44m
Delta
Sun 26/411:59 p.m.
SEA
-
DTW
1 stop8h 44m
Delta
Deal found 13/2C$ 295
Tue 5/57:52 p.m.
DTW
-
SEA
Nonstop4h 57m
Delta
Sat 16/55:30 a.m.
SEA
-
DTW
Nonstop4h 22m
Delta
Deal found 12/2C$ 323
Tue 3/38:00 a.m.
DTW
-
SEA
1 stop9h 44m
Delta
Sat 7/36:00 a.m.
SEA
-
DTW
Nonstop4h 16m
Delta
Deal found 10/2C$ 336
Mon 16/38:15 p.m.
DTW
-
SEA
Nonstop5h 00m
Delta
Tue 24/311:15 p.m.
SEA
-
DTW
Nonstop4h 12m
Delta
Deal found 10/2C$ 336
Sun 17/58:35 p.m.
DTW
-
SEA
Nonstop4h 53m
Delta
Mon 25/511:05 p.m.
SEA
-
DTW
Nonstop4h 25m
Delta
Deal found 13/2C$ 350
Fri 6/38:05 p.m.
DTW
-
SEA
Nonstop5h 00m
Delta
Mon 9/311:15 p.m.
SEA
-
DTW
Nonstop4h 11m
Delta
Deal found 10/2C$ 350
Direct flights from Detroit to Seattle
Explore direct flight options from Detroit to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 February 2026.
Sun 19/47:52 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Thu 23/46:00 a.m.
SEA
-
DTW
Nonstop4h 15m
Delta
Deal found 13/2C$ 295
Sat 18/44:55 p.m.
DTW
-
SEA
Nonstop5h 04m
Alaska Airlines
Sat 25/410:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 13/2C$ 302
Sat 18/44:55 p.m.
DTW
-
SEA
Nonstop5h 04m
Alaska Airlines
Sun 26/410:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 13/2C$ 316
Tue 14/44:30 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Sat 18/46:00 a.m.
SEA
-
DTW
Nonstop4h 15m
Delta
Deal found 11/2C$ 323
Tue 14/47:52 p.m.
DTW
-
SEA
Nonstop4h 57m
Delta
Fri 24/411:14 p.m.
SEA
-
DTW
Nonstop4h 16m
Delta
Deal found 11/2C$ 336
Wed 18/34:52 p.m.
DTW
-
SEA
Nonstop5h 04m
Hawaiian Airlines
Sun 22/38:35 a.m.
SEA
-
DTW
Nonstop4h 21m
Hawaiian Airlines
Deal found 13/2C$ 344
Fri 17/47:52 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Thu 30/46:00 a.m.
SEA
-
DTW
Nonstop4h 15m
Delta
Deal found 13/2C$ 350
Sat 18/44:55 p.m.
DTW
-
SEA
Nonstop5h 04m
Alaska Airlines
Fri 1/510:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 13/2C$ 364
Tue 10/312:20 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Sat 14/36:00 a.m.
SEA
-
DTW
Nonstop4h 09m
Delta
Deal found 13/2C$ 377
Sat 14/312:20 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Fri 20/311:15 p.m.
SEA
-
DTW
Nonstop4h 12m
Delta
Deal found 11/2C$ 378
Last-minute flights from Detroit to Seattle
Discover last-minute flight deals from Detroit to Seattle. Data last updated 15 February 2026 and is based on user searches.
Wed 4/38:30 a.m.
DTW
-
SEA
Nonstop5h 12m
Delta
Wed 11/36:00 a.m.
SEA
-
DTW
Nonstop4h 09m
Delta
Deal found 11/2C$ 323
Fri 6/38:05 p.m.
DTW
-
SEA
Nonstop5h 00m
Delta
Mon 9/311:15 p.m.
SEA
-
DTW
Nonstop4h 11m
Delta
Deal found 13/2C$ 350
Wed 11/38:15 p.m.
DTW
-
SEA
Nonstop5h 00m
Delta
Mon 16/311:15 p.m.
SEA
-
DTW
Nonstop4h 12m
Delta
Deal found 14/2C$ 295
Sat 14/312:20 p.m.
DTW
-
SEA
Nonstop4h 58m
Delta
Fri 20/311:15 p.m.
SEA
-
DTW
Nonstop4h 12m
Delta
Deal found 11/2C$ 378
Tue 17/38:25 a.m.
DTW
-
SEA
Nonstop5h 08m
Delta
Mon 23/311:59 p.m.
SEA
-
DTW
1 stop5h 45m
Delta
Deal found 13/2C$ 282
Wed 18/311:54 a.m.
DTW
-
SEA
1 stop26h 25m
Frontier
Sun 22/39:35 p.m.
SEA
-
DTW
2 stops34h 24m
Frontier
Deal found 13/2C$ 308
Wed 18/311:54 a.m.
DTW
-
SEA
1 stop26h 25m
Multiple Airlines
Sun 22/39:35 p.m.
SEA
-
DTW
1 stop28h 00m
Multiple Airlines
Deal found 13/2C$ 327
Wed 18/34:52 p.m.
DTW
-
SEA
Nonstop5h 04m
Hawaiian Airlines
Sun 22/38:35 a.m.
SEA
-
DTW
Nonstop4h 21m
Hawaiian Airlines
Deal found 13/2C$ 344
One-way flights from Detroit to Seattle
Search for one-way flight options from Detroit to Seattle. Find affordable one-way fares based on user searches. Data last updated 15 February 2026.
Sun 10/58:20 p.m.
DTW
-
SEA
1 stop6h 50m
Southwest
Deal found 13/2C$ 135
Wed 13/51:40 p.m.
DTW
-
SEA
1 stop13h 30m
Southwest
Deal found 14/2C$ 142
Tue 10/35:22 p.m.
DTW
-
SEA
Nonstop5h 13m
Alaska Airlines
Deal found 13/2C$ 148
Sat 9/52:06 p.m.
DTW
-
SEA
1 stop9h 24m
Delta
Deal found 13/2C$ 162
Thu 12/38:18 p.m.
DTW
-
SEA
1 stop6h 43m
Delta
Deal found 13/2C$ 176
Wed 5/82:46 p.m.
DTW
-
SEA
1 stop11h 00m
JetBlue
Deal found 11/2C$ 187
Wed 8/48:25 a.m.
DTW
-
SEA
Nonstop5h 08m
Delta
Deal found 11/2C$ 189
Thu 2/48:15 p.m.
DTW
-
SEA
Nonstop5h 00m
Delta
Deal found 10/2C$ 203
Tue 3/310:59 p.m.
DTW
-
SEA
1 stop24h 56m
Multiple Airlines
Deal found 11/2C$ 207
Thu 19/33:25 p.m.
DTW
-
SEA
1 stop10h 34m
United Airlines
Deal found 13/2C$ 212
Fri 6/34:41 p.m.
DTW
-
SEA
1 stop9h 44m
Delta
Deal found 10/2C$ 216
Find flight deals from Detroit to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 February 2026.
Customize your flight search to find flights from Detroit to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 February 2026.
Use the filters below to find and compare flights from Detroit to Seattle that are best for you.
Fly from
Detroit
Fly to
Seattle
Route
Depart
Return
Price
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Wed 15/4
7:52 p.m.-9:49 p.m.
Nonstop4h 57m
Seattle/Tacoma Intl
Sat 18/4
10:15 a.m.-11:03 p.m.
1 stop9h 48m
C$ 282
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Thu 23/4
7:52 p.m.-9:50 p.m.
Nonstop4h 58m
Seattle/Tacoma Intl
Wed 29/4
10:15 a.m.-11:03 p.m.
1 stop9h 48m
C$ 282
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 24/4
7:52 p.m.-9:50 p.m.
Nonstop4h 58m
Seattle/Tacoma Intl
Mon 27/4
7:59 p.m.-7:01 a.m.
1 stop8h 02m
C$ 282
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Sun 19/4
7:52 p.m.-9:50 p.m.
Nonstop4h 58m
Seattle/Tacoma Intl
Sat 25/4
11:40 a.m.-11:03 p.m.
1 stop8h 23m
C$ 282
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Wed 15/4
7:00 a.m.-2:42 p.m.
1 stop10h 42m
Seattle/Tacoma Intl
Sun 19/4
11:59 p.m.-8:43 a.m.
1 stop5h 44m
C$ 295
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 17/4
8:15 p.m.-11:59 p.m.
1 stop6h 44m
Seattle/Tacoma Intl
Sun 26/4
11:59 p.m.-11:43 a.m.
1 stop8h 44m
C$ 295
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Tue 5/5
7:52 p.m.-9:49 p.m.
Nonstop4h 57m
Seattle/Tacoma Intl
Sat 16/5
5:30 a.m.-12:52 p.m.
Nonstop4h 22m
C$ 323
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Tue 3/3
8:00 a.m.-2:44 p.m.
1 stop9h 44m
Seattle/Tacoma Intl
Sat 7/3
6:00 a.m.-1:16 p.m.
Nonstop4h 16m
C$ 336
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Mon 16/3
8:15 p.m.-10:15 p.m.
Nonstop5h 00m
Seattle/Tacoma Intl
Tue 24/3
11:15 p.m.-6:27 a.m.
Nonstop4h 12m
C$ 336
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Sun 17/5
8:35 p.m.-10:28 p.m.
Nonstop4h 53m
Seattle/Tacoma Intl
Mon 25/5
11:05 p.m.-6:30 a.m.
Nonstop4h 25m
C$ 350
Flights are sorted by cheapest round-trip flights first.
Deals found on 13/2
Showing 1-10 of 20 results
1
2
Best time to book a flight from Detroit to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Detroit with our price prediction graph.
DTT-SEA
DTW-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Detroit to Seattle
DTT-SEA
DTW-SEA
How far ahead should I book a flight from Detroit to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Detroit to Seattle. Price data was last updated on 6 February 2026.
To ensure you get the cheapest price possible for a flight from Detroit to Seattle, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Detroit to Seattle?
Currently, April is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 230). Flying from Detroit to Seattle in August is currently the most expensive (average of C$ 364). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from DTT to SEA?
Find hourly flight availability from Detroit to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 February 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Detroit to Seattle as you normally would.
Weekly flight availability from Detroit to Seattle
Explore weekly flight availability from Detroit to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 February 2026.
The most flights from DTT to SEA are scheduled on a Thursday (13 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (7 on average).
How much does it cost to fly round-trip from Detroit to Seattle?
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 15 February 2026.
Read through reviews of airlines operating flights from Detroit to Seattle, such as Alaska Airlines,Delta, andHawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
The flight was great. Don’t have to make it better. Everything was OK.
Related info for your journey
Find useful and relevant information for your journey from Detroit to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airports do I use to fly from Detroit to Seattle?
If you book a flight from Detroit to Seattle, you will be flying from All airports to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Detroit All airports (DTT) take 4h 53m for a nonstop flight. There are 10 flights from All airports to Seattle per day from 4 airlines.
How long is the flight from Detroit to Seattle?
A quick flight from Detroit to Seattle can take about 4h 57m. Delta provides one of the quickest options available for as low as C$ 282. Detroit and Seattle are separated by a distance of 3090 km. Most flights are nonstop.
What are the cheapest airlines flying from Detroit to Seattle round-trip?
Delta, at C$ 174, was found to be the cheapest airline from Detroit to Seattle.Alternate airlines to your destination round-trip include Spirit Airlines and Hawaiian Airlines. These flights start at 63% lower than the current average price 3 months from now.
What are the most reliable airlines from Detroit to Seattle?
No one likes to see their flight delayed. When booking a flight from Detroit to Seattle consider choosing American Airlines (68%), Alaska Airlines (68%) or Hawaiian Airlines (68%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Detroit to Seattle?
Looking at all options, your cheapest flight can be booked for C$ 163. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 327 on average, our data indicates C$ 531 when flying from Detroit to Seattle.
Can I find deals for business class flights from Detroit to Seattle?
Yes. Cheapflights offers flight deals from Detroit to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Detroit to Seattle?
Currently, April is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 230). Flying from Detroit to Seattle in August is currently the most expensive (average of C$ 364). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Browse through other flights departing from Detroit. Flights are based on user searches made on Cheapflights and were last updated on 15 February 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 15 February 2026.
Discover the top 4 airlines that operate flights from Detroit to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 February 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Detroit to Seattle?
Cheapflights makes it easy to find Detroit to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Detroit to Seattle?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Detroit to Seattle for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Detroit to Seattle with no change fees?
Yes! Cheapflights helps users easily find flights from Detroit to Seattle with no change fees.
Can Cheapflights notify me if prices for flights from Detroit to Seattle become cheaper?
Yes, Cheapflights offers price alerts on Detroit to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyze navigation, to offer and measure personalized advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review and update your choices anytime by clicking the ’Privacy Preferences’ link in the page side navigation.