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Cheap flights from Detroit to Seattle from C$ 282

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
9 Sep — 16 Sep1
1 adult
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

Enter your travel dates to find the best prices.

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 10 August 2026.

Sat 12/95:25 a.m. -
1 stop7h 11m
Sun 20/911:00 p.m. -
1 stop7h 32m
Deal found 6/8C$ 465
Wed 9/95:25 a.m. -
2 stops9h 32m
Wed 23/911:00 p.m. -
1 stop7h 28m
Deal found 8/8C$ 472
Sat 3/1010:37 a.m. -
2 stops12h 53m
Sun 11/107:00 p.m. -
1 stop9h 21m
Deal found 5/8C$ 477
Thu 27/87:55 a.m. -
1 stop8h 27m
Wed 2/911:54 a.m. -
2 stops15h 22m
Deal found 5/8C$ 479
Sat 22/87:55 a.m. -
1 stop28h 24m
Mon 31/81:35 p.m. -
1 stop8h 38m
Deal found 8/8C$ 481
Mon 7/98:46 p.m. -
2 stops19h 36m
Fri 11/99:45 p.m. -
1 stop28h 10m
Deal found 5/8C$ 489
Tue 22/95:25 a.m. -
2 stops9h 32m
Sat 26/911:13 p.m. -
1 stop7h 15m
Deal found 5/8C$ 496
Sun 13/95:25 a.m. -
1 stop7h 11m
Sat 19/911:04 p.m. -
1 stop8h 06m
Deal found 6/8C$ 499
Fri 28/86:10 p.m. -
1 stop7h 33m
Wed 2/95:00 a.m. -
2 stops9h 00m
Deal found 6/8C$ 502
Tue 1/95:25 a.m. -
2 stops9h 19m
Sun 6/95:00 a.m. -
1 stop6h 27m
Deal found 6/8C$ 503
Thu 8/105:30 a.m. -
1 stop7h 06m
Sun 11/1011:13 p.m. -
1 stop7h 15m
Deal found 6/8C$ 509

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 10 August 2026.

Round-trip from

C$ 465

One-way from

C$ 282

Popular in

June

Cheapest in

January

Average price

C$ 599

Good round-trip deal

C$ 511 or less

Good one-way deal

C$ 459 or less
United Airlines
  • United Airlines
  • 12/9-20/9
  • 2 total stops
  • 14h 43m total
  • Detroit to Seattle
Search Deals
United Airlines
  • United Airlines
  • 9/9
  • 1 total stop
  • 9h 21m total
  • Detroit to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Detroit (DTT) to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Detroit (DTT) to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
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 10 August 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

Wed 9/9

10:46 a.m.-5:42 p.m.

2 stops9h 56m

Seattle/Tacoma Intl

Sun 13/9

6:52 p.m.-9:32 a.m.

2 stops11h 40m

C$ 619
Quickest round-trip

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Sun 30/8

8:05 p.m.-10:05 p.m.

Nonstop5h 00m

Seattle/Tacoma Intl

Sun 6/9

5:30 a.m.-12:42 p.m.

Nonstop4h 12m

C$ 623

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Thu 27/8

8:05 p.m.-10:05 p.m.

Nonstop5h 00m

Seattle/Tacoma Intl

Wed 2/9

11:18 a.m.-6:35 p.m.

Nonstop4h 17m

C$ 623

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Wed 30/9

8:10 p.m.-10:05 p.m.

Nonstop4h 55m

Seattle/Tacoma Intl

Wed 7/10

6:00 a.m.-1:23 p.m.

Nonstop4h 23m

C$ 623

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Sat 19/9

8:25 a.m.-10:26 a.m.

Nonstop5h 01m

Seattle/Tacoma Intl

Mon 28/9

11:05 p.m.-6:28 a.m.

Nonstop4h 23m

C$ 623

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Sat 7/11

7:25 a.m.-1:43 p.m.

1 stop9h 18m

Seattle/Tacoma Intl

Mon 9/11

11:15 p.m.-6:29 a.m.

Nonstop4h 14m

C$ 637

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Sun 30/8

5:25 a.m.-9:35 a.m.

1 stop7h 10m

Seattle/Tacoma Intl

Sun 6/9

6:30 a.m.-8:29 p.m.

2 stops10h 59m

C$ 655

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Fri 9/10

5:30 a.m.-9:36 a.m.

1 stop7h 06m

Seattle/Tacoma Intl

Mon 12/10

6:43 p.m.-9:28 a.m.

2 stops11h 45m

C$ 655

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Sat 3/10

9:02 a.m.-9:15 p.m.

3 stops15h 13m

Seattle/Tacoma Intl

Sun 11/10

11:13 p.m.-9:28 a.m.

1 stop7h 15m

C$ 662

DetroitSeattle

DTW Detroit Metropolitan Wayne County - SEA Seattle/Tacoma Intl

DTWSEA

Detroit Metropolitan Wayne County

Sat 19/9

7:15 a.m.-2:20 p.m.

2 stops10h 05m

Seattle/Tacoma Intl

Mon 28/9

11:05 p.m.-12:20 p.m.

2 stops10h 15m

C$ 665

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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.
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

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$ 369). Flying from Detroit to Seattle in July is currently the most expensive (average of C$ 687). 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 10 August 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 10 August 2026.

The most flights from DTT to SEA are scheduled on a Saturday (20 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (14 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$ 545 and C$ 762 in September.
The cheapest round-trip price found within the last 5 days was C$ 465 on United Airlines (12 Sep-20 Sep).

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 10 August 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.
Alaska Airlines
7.9
Good
12,790 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

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.
Alaska Airlines
7.9
Good
12,790 reviews
Alaska Airlines
7.9
Good
12,790 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

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 59m for a nonstop flight. There are 16 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 5h. United Airlines provides one of the quickest options available for as low as C$ 623. 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?

    Alaska Airlines, at C$ 266, was found to be the cheapest airline from Detroit to Seattle.Alternate airlines to your destination round-trip include Frontier and Delta. These flights start at 49% 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 KLM (86%), Alaska Airlines (85%) or WestJet (84%) 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$ 388. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 516 on average, our data indicates C$ 526 when flying from Detroit to Seattle.

  • Can I find deals for flights from Detroit to Seattle that include hotel bookings?

    Yes. In addition to deals on Detroit to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Detroit to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights 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$ 369). Flying from Detroit to Seattle in July is currently the most expensive (average of C$ 687). 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.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Leavenworth
Mukilteo
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
Kirkland

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Detroit to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Detroit to Seattle flights
O'Hare Intl to Seattle flights
Detroit to Portland flights

Top 3 airlines flying from Detroit to Seattle

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 629,999 searches. Data last updated 10 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 266AverageC$ 623FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
FrontierCheapestC$ 273AverageC$ 433FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 290AverageC$ 483FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

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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