This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
8 Oct — 15 Oct1
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 March, booked 70 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap flight deals from Detroit to Seattle
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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 8 September 2026.
Sun 18/107:00 a.m. -
Nonstop4h 55m
Mon 26/1010:18 p.m. -
Nonstop4h 22m
Deal found 5/9C$ 459
Mon 26/107:08 a.m. -
1 stop11h 04m
Mon 2/114:27 p.m. -
1 stop20h 07m
Deal found 3/9C$ 462
Thu 19/118:35 p.m. -
1 stop21h 47m
Sat 5/125:25 p.m. -
1 stop19h 56m
Deal found 7/9C$ 463
Fri 30/101:55 p.m. -
2 stops10h 05m
Mon 2/116:30 a.m. -
2 stops9h 30m
Deal found 6/9C$ 464
Fri 30/101:55 p.m. -
2 stops10h 05m
Tue 3/115:40 a.m. -
2 stops10h 15m
Deal found 7/9C$ 466
Sat 21/116:41 a.m. -
1 stop8h 56m
Mon 7/128:00 p.m. -
2 stops25h 51m
Deal found 7/9C$ 467
Wed 28/107:00 a.m. -
1 stop11h 12m
Wed 4/114:27 p.m. -
2 stops13h 52m
Deal found 3/9C$ 469
Wed 18/115:45 p.m. -
Nonstop5h 03m
Mon 7/128:55 p.m. -
1 stop14h 02m
Deal found 7/9C$ 470
Wed 28/107:00 a.m. -
1 stop11h 12m
Fri 6/114:27 p.m. -
1 stop20h 07m
Deal found 3/9C$ 471
Fri 16/108:05 p.m. -
1 stop7h 35m
Fri 23/108:05 a.m. -
2 stops10h 40m
Deal found 6/9C$ 473
Fri 20/115:26 a.m. -
1 stop18h 12m
Mon 7/128:00 p.m. -
2 stops17h 21m
Deal found 7/9C$ 474
Sat 21/118:31 p.m. -
1 stop21h 51m
Sat 5/125:25 p.m. -
2 stops12h 54m
Deal found 7/9C$ 475
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 8 September 2026.
Thu 12/111:30 p.m. -
2 stops12h 30m
Sat 14/115:30 a.m. -
2 stops13h 30m
Deal found 7/9C$ 464
Thu 12/1112:15 p.m. -
1 stop7h 43m
Sat 14/1110:12 a.m. -
1 stop9h 41m
Deal found 5/9C$ 466
Tue 27/105:59 p.m. -
Nonstop4h 58m
Tue 10/119:25 a.m. -
Nonstop4h 22m
Deal found 3/9C$ 518
Fri 16/108:05 p.m. -
1 stop7h 35m
Fri 23/108:05 a.m. -
2 stops10h 40m
Deal found 6/9C$ 473
Thu 1/107:01 a.m. -
Nonstop4h 53m
Sun 4/1010:18 p.m. -
Nonstop4h 22m
Deal found 3/9C$ 518
Tue 29/912:22 p.m. -
1 stop11h 26m
Wed 7/103:00 p.m. -
Nonstop4h 16m
Deal found 8/9C$ 560
Fri 20/1110:50 a.m. -
2 stops12h 15m
Sat 5/126:45 a.m. -
1 stop5h 55m
Deal found 7/9C$ 535
Wed 11/115:45 p.m. -
Nonstop5h 03m
Sat 14/119:25 a.m. -
Nonstop4h 22m
Deal found 4/9C$ 546
Sun 25/105:59 p.m. -
Nonstop4h 58m
Tue 3/119:25 a.m. -
Nonstop4h 22m
Deal found 3/9C$ 549
Mon 26/105:59 p.m. -
Nonstop4h 58m
Sat 31/109:31 a.m. -
Nonstop4h 30m
Deal found 3/9C$ 549
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 8 September 2026.
Sun 18/107:00 a.m. -
Nonstop4h 55m
Mon 26/1010:18 p.m. -
Nonstop4h 22m
Deal found 5/9C$ 459
Wed 30/94:53 p.m. -
Nonstop4h 52m
Mon 5/109:59 p.m. -
Nonstop4h 25m
Deal found 7/9C$ 478
Sun 27/97:01 a.m. -
Nonstop4h 53m
Tue 6/1010:18 p.m. -
Nonstop4h 22m
Deal found 6/9C$ 506
Thu 1/107:01 a.m. -
Nonstop4h 53m
Sun 4/1010:18 p.m. -
Nonstop4h 22m
Deal found 3/9C$ 518
Thu 5/114:34 p.m. -
Nonstop5h 01m
Mon 9/1111:15 p.m. -
Nonstop4h 12m
Deal found 7/9C$ 521
Wed 18/115:45 p.m. -
Nonstop5h 03m
Sun 22/1110:24 p.m. -
Nonstop4h 17m
Deal found 3/9C$ 534
Mon 19/107:00 a.m. -
Nonstop4h 55m
Tue 20/1010:18 p.m. -
Nonstop4h 22m
Deal found 6/9C$ 542
Fri 20/117:01 a.m. -
Nonstop5h 08m
Wed 25/1110:24 p.m. -
Nonstop4h 17m
Deal found 6/9C$ 546
Sun 25/107:00 a.m. -
Nonstop4h 55m
Thu 5/119:25 a.m. -
Nonstop4h 22m
Deal found 3/9C$ 549
Sun 15/118:45 a.m. -
Nonstop5h 14m
Tue 24/116:00 a.m. -
Nonstop4h 19m
Deal found 4/9C$ 556
Fri 2/106:00 a.m. -
Nonstop4h 55m
Mon 5/1011:05 p.m. -
Nonstop4h 23m
Deal found 4/9C$ 574
Fri 25/98:10 p.m. -
Nonstop4h 55m
Sun 4/106:00 a.m. -
Nonstop4h 20m
Deal found 6/9C$ 575
Last-minute flights from Detroit to Seattle
Discover last-minute flight deals from Detroit to Seattle. Data last updated 8 September 2026 and is based on user searches.
Wed 30/98:10 p.m. -
Nonstop4h 55m
Wed 7/106:00 a.m. -
Nonstop4h 23m
Deal found 6/9C$ 478
Mon 5/108:05 p.m. -
1 stop7h 35m
Sun 11/1012:10 a.m. -
1 stop6h 55m
Deal found 7/9C$ 480
Thu 8/1012:51 p.m. -
2 stops23h 57m
Thu 22/104:27 p.m. -
1 stop28h 28m
Deal found 7/9C$ 470
Fri 16/108:05 p.m. -
1 stop7h 35m
Fri 23/108:05 a.m. -
2 stops10h 40m
Deal found 6/9C$ 473
Sun 18/107:00 a.m. -
Nonstop4h 55m
Mon 26/1010:18 p.m. -
Nonstop4h 22m
Deal found 5/9C$ 459
Sun 25/107:08 a.m. -
1 stop11h 04m
Mon 2/114:27 p.m. -
1 stop20h 07m
Deal found 3/9C$ 477
Mon 26/107:08 a.m. -
1 stop11h 04m
Mon 2/114:27 p.m. -
1 stop20h 07m
Deal found 3/9C$ 462
Wed 28/107:00 a.m. -
1 stop11h 12m
Wed 4/114:27 p.m. -
2 stops13h 52m
Deal found 3/9C$ 469
Wed 28/107:00 a.m. -
1 stop11h 12m
Fri 6/114:27 p.m. -
1 stop20h 07m
Deal found 3/9C$ 471
Thu 29/108:35 p.m. -
1 stop21h 37m
Wed 4/1112:14 p.m. -
1 stop13h 41m
Deal found 3/9C$ 481
Fri 30/101:55 p.m. -
2 stops10h 05m
Mon 2/116:30 a.m. -
2 stops9h 30m
Deal found 6/9C$ 464
Fri 30/101:55 p.m. -
2 stops10h 05m
Tue 3/115:40 a.m. -
2 stops10h 15m
Deal found 7/9C$ 466
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 8 September 2026.
Sun 11/106:15 a.m. -
1 stop11h 38m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 281
Tue 27/108:30 a.m. -
1 stop10h 57m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/9C$ 287
Fri 4/127:55 p.m. -
Nonstop5h 09m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 6/9C$ 289
Wed 14/106:35 a.m. -
2 stops10h 00m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 294
Sat 17/107:08 a.m. -
2 stops28h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 296
Mon 5/106:16 p.m. -
1 stop8h 34m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 6/9C$ 303
Sat 3/1012:30 p.m. -
3 stops13h 57m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 307
Sun 6/1212:57 p.m. -
Nonstop5h 06m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 6/9C$ 317
Wed 25/118:00 p.m. -
1 stop8h 15m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 323
Sun 4/107:05 a.m. -
1 stop6h 34m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 330
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 8 September 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 7,457,451 searches. Data last updated 8 September 2026.
Use the filters below to find and compare flights from Detroit to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Sun 31/1
8:35 a.m.-1:00 p.m.
1 stop7h 25m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 287
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Mon 7/12
7:55 p.m.-10:04 p.m.
Nonstop5h 09m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 289
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Sat 5/12
7:55 p.m.-10:04 p.m.
Nonstop5h 09m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 289
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Fri 4/12
7:55 p.m.-10:04 p.m.
Nonstop5h 09m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 289
Quickest round-trip
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Mon 5/10
8:10 p.m.-10:05 p.m.
Nonstop4h 55m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 289
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Wed 14/10
6:35 a.m.-1:35 p.m.
2 stops10h 00m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 294
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Tue 27/10
7:57 p.m.-10:05 p.m.
Nonstop5h 08m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 303
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Thu 22/10
7:57 p.m.-10:05 p.m.
Nonstop5h 08m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 317
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Fri 25/9
10:25 a.m.-9:59 p.m.
2 stops14h 34m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 343
DetroitSeattle
DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl
DTWSEA
Detroit Metropolitan Wayne County
Sat 6/3
8:05 p.m.-12:11 a.m.
1 stop7h 06m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 344
Flights are sorted by cheapest round-trip flights first.
Deals found on 8/9
Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3
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
What is the cheapest month to book a flight from Detroit to Seattle?
Currently, January is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 375). Flying from Detroit to Seattle in July is currently the most expensive (average of C$ 681). 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 8 September 2026.
When flying from Detroit to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 41% versus a flight at noon.
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 8 September 2026.
The most flights from DTT to SEA are scheduled on a Sunday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Detroit to Seattle?
Airfare is below average for this route at the moment.
Detroit to Seattle flights typically cost between C$ 485 and C$ 853 in October.The cheapest round-trip price found within the last 5 days was C$ 459 on Alaska Airlines (18 Oct-26 Oct).
How far ahead should I book a flight from Detroit to Seattle?
To ensure you get the cheapest price possible for a flight from Detroit to Seattle, you should look to book at least 69 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.
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 8 September 2026.
Read through reviews of airlines operating flights from Detroit to Seattle, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
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 52m for a nonstop flight. There are 11 flights from All airports to Seattle per day from 3 airlines.
How long is the flight from Detroit to Seattle?
A quick flight from Detroit to Seattle can take about 4h 58m. Southwest provides one of the quickest options available for as low as C$ 518. Detroit and Seattle are separated by a distance of 3090 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Detroit to Seattle round-trip?
Frontier, at C$ 213, was found to be the cheapest airline from Detroit to Seattle.Alternate airlines to your destination round-trip include Alaska Airlines and Delta. These flights start at 60% 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 Cathay Pacific (89%), KLM (82%) or WestJet (79%) 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$ 215. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 300 on average, our data indicates C$ 542 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, January is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 375). Flying from Detroit to Seattle in July is currently the most expensive (average of C$ 681). 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 8 September 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 September 2026.
Discover the top 3 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 7,457,451 searches. Data last updated 8 September 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.
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