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Cheap flights from Detroit to Seattle from C$ 303

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 18/7. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
7 Aug — 14 Aug1
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 8 July 2026.

Mon 31/81:20 p.m.
DTW
-
SEA
2 stops10h 25m
Southwest
Tue 8/911:05 p.m.
SEA
-
DTW
2 stops10h 15m
Southwest
Deal found 7/7C$ 526
Sat 19/97:34 a.m.
DTW
-
SEA
1 stop6h 58m
United Airlines
Wed 30/910:42 a.m.
SEA
-
DTW
1 stop6h 58m
United Airlines
Deal found 7/7C$ 530
Wed 19/85:25 a.m.
DTW
-
SEA
1 stop7h 10m
United Airlines
Sat 29/85:20 p.m.
SEA
-
DTW
2 stops13h 18m
United Airlines
Deal found 7/7C$ 537
Mon 3/86:11 p.m.
DTW
-
SEA
1 stop9h 48m
American Airlines
Mon 10/811:56 p.m.
SEA
-
DTW
1 stop9h 40m
American Airlines
Deal found 6/7C$ 541
Wed 21/1012:30 p.m.
DTW
-
SEA
2 stops11h 45m
United Airlines
Tue 27/108:10 a.m.
SEA
-
DTW
1 stop7h 51m
United Airlines
Deal found 3/7C$ 544
Sat 3/102:02 p.m.
DTW
-
SEA
2 stops10h 13m
United Airlines
Tue 13/1011:13 p.m.
SEA
-
DTW
2 stops9h 58m
United Airlines
Deal found 3/7C$ 546
Mon 3/87:40 a.m.
DTW
-
SEA
1 stop28h 37m
Frontier
Mon 10/88:53 p.m.
SEA
-
DTW
1 stop31h 07m
Frontier
Deal found 3/7C$ 548
Fri 10/78:30 a.m.
DTW
-
SEA
1 stop29h 09m
Frontier
Fri 28/81:35 p.m.
SEA
-
DTW
1 stop8h 38m
Frontier
Deal found 2/7C$ 550
Tue 3/116:25 p.m.
DTW
-
SEA
1 stop7h 28m
United Airlines
Sun 15/115:00 a.m.
SEA
-
DTW
2 stops9h 23m
United Airlines
Deal found 5/7C$ 553
Fri 10/71:19 p.m.
DTW
-
SEA
1 stop22h 58m
Frontier
Sun 30/89:29 p.m.
SEA
-
DTW
1 stop29h 51m
Frontier
Deal found 4/7C$ 557
Wed 28/102:36 p.m.
DTW
-
SEA
2 stops11h 17m
United Airlines
Tue 10/118:33 a.m.
SEA
-
DTW
2 stops10h 49m
United Airlines
Deal found 5/7C$ 558

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 July 2026.

Round-trip from

C$ 526

One-way from

C$ 303

Popular in

June

Cheapest in

January

Average price

C$ 683

Good round-trip deal

C$ 564 or less
Southwest
  • Southwest
  • 24/8-29/8
  • 4 total stops
  • 20h 05m total
  • Detroit to Seattle
Search Deals
Frontier
  • Frontier
  • 18/7
  • 1 total stop
  • 28h 37m total
  • Detroit to Seattle
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 194 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip 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 8 July 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 - SEA

DTWSEA

Detroit Metropolitan Wayne County

Mon 7/9

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

1 stop7h 10m

Seattle/Tacoma Intl

Wed 9/9

7:35 p.m.-9:38 a.m.

2 stops11h 03m

C$ 581

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 4/9

6:10 p.m.-10:43 p.m.

1 stop7h 33m

Seattle/Tacoma Intl

Sat 12/9

5:20 p.m.-9:38 a.m.

2 stops13h 18m

C$ 590

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Thu 24/9

6:00 a.m.-7:55 a.m.

Nonstop4h 55m

Seattle/Tacoma Intl

Sat 3/10

6:00 a.m.-1:20 p.m.

Nonstop4h 20m

C$ 592

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Sun 30/8

7:01 a.m.-8:54 a.m.

Nonstop4h 53m

Seattle/Tacoma Intl

Sun 6/9

9:59 p.m.-5:22 a.m.

Nonstop4h 23m

C$ 592

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Sun 16/8

7:01 a.m.-9:00 a.m.

Nonstop4h 59m

Seattle/Tacoma Intl

Wed 2/9

9:59 p.m.-5:22 a.m.

Nonstop4h 23m

C$ 592
Quickest round-trip

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Mon 3/8

6:00 a.m.-7:49 a.m.

Nonstop4h 49m

Seattle/Tacoma Intl

Sat 8/8

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

Nonstop4h 12m

C$ 592

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Mon 17/8

7:01 a.m.-9:00 a.m.

Nonstop4h 59m

Seattle/Tacoma Intl

Wed 2/9

9:59 p.m.-5:22 a.m.

Nonstop4h 23m

C$ 592

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 28/8

6:00 a.m.-7:49 a.m.

Nonstop4h 49m

Seattle/Tacoma Intl

Mon 31/8

11:10 p.m.-6:23 a.m.

Nonstop4h 13m

C$ 592

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Thu 17/9

7:01 a.m.-8:54 a.m.

Nonstop4h 53m

Seattle/Tacoma Intl

Mon 21/9

9:59 p.m.-5:22 a.m.

Nonstop4h 23m

C$ 592

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Wed 25/11

4:35 p.m.-6:38 p.m.

Nonstop5h 03m

Seattle/Tacoma Intl

Sun 29/11

11:05 p.m.-6:26 a.m.

Nonstop4h 21m

C$ 592

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 22 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.
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, April is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 158). Flying from Detroit to Seattle in June is currently the most expensive (average of C$ 1,942). 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 July 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 44% 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 July 2026.

The most flights from DTT to SEA are scheduled on a Tuesday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

How much does it cost to fly round-trip from Detroit to Seattle?

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 July 2026.
Read through reviews of airlines operating flights from Detroit to Seattle, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,451 reviews
Check prices

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
Delta
7.8
Good
8,451 reviews
Delta
7.8
Good
8,451 reviews
Check prices

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.

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 49m for a nonstop flight. There are 13 flights from All airports to Seattle per day from 2 airlines.

  • How long is the flight from Detroit to Seattle?

    A quick flight from Detroit to Seattle can take about 4h 53m. United Airlines provides one of the quickest options available for as low as C$ 592. 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$ 272, was found to be the cheapest airline from Detroit to Seattle. An alternate airline flying to your destination would be Delta. These flights start at 48% 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 Alaska Airlines (88%), American Airlines (85%) or KLM (83%) 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$ 563. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 484 on average, our data indicates C$ 670 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, April is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 158). Flying from Detroit to Seattle in June is currently the most expensive (average of C$ 1,942). 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
Tukwila
Olympia
Marysville
Federal Way
Kirkland

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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
Detroit to Portland flights
O'Hare Intl to Seattle flights

Top 2 airlines flying from Detroit to Seattle

Discover the top 2 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 8 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 272AverageC$ 564FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapestC$ 296AverageC$ 493FlexibilityNo 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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