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Cheap flights from Detroit to Seattle from C$ 123

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
28 Mar — 4 Apr1
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 74 days in advance, depart on a Tuesday or Saturday and return on a Sunday

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 26 February 2026.

Tue 5/57:52 p.m.
DTW
-
SEA
Nonstop4h 57m
Delta
Wed 6/511:14 p.m.
SEA
-
DTW
Nonstop4h 16m
Delta
Deal found 25/2C$ 272
Fri 24/44:16 p.m.
DTW
-
SEA
1 stop10h 35m
Delta
Sat 2/56:00 a.m.
SEA
-
DTW
Nonstop4h 13m
Delta
Deal found 24/2C$ 283
Mon 4/57:59 p.m.
DTW
-
SEA
1 stop6h 55m
Delta
Tue 5/56:00 a.m.
SEA
-
DTW
Nonstop4h 13m
Delta
Deal found 25/2C$ 286
Wed 6/55:14 p.m.
DTW
-
SEA
Nonstop4h 55m
Alaska Airlines
Wed 6/510:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 25/2C$ 292
Tue 28/48:45 a.m.
DTW
-
SEA
1 stop8h 28m
Delta
Mon 4/511:59 p.m.
SEA
-
DTW
1 stop8h 44m
Delta
Deal found 22/2C$ 297
Tue 24/38:25 a.m.
DTW
-
SEA
Nonstop5h 08m
Delta
Fri 27/311:15 p.m.
SEA
-
DTW
Nonstop4h 12m
Delta
Deal found 24/2C$ 298
Fri 24/410:27 p.m.
DTW
-
SEA
1 stop14h 00m
Frontier
Thu 30/49:07 p.m.
SEA
-
DTW
2 stops10h 51m
Frontier
Deal found 24/2C$ 302
Sat 2/55:14 p.m.
DTW
-
SEA
Nonstop4h 55m
Alaska Airlines
Wed 6/510:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Alaska Airlines
Deal found 25/2C$ 305
Thu 23/410:27 p.m.
DTW
-
SEA
1 stop14h 25m
Frontier
Thu 30/49:07 p.m.
SEA
-
DTW
2 stops10h 51m
Frontier
Deal found 24/2C$ 307
Sun 12/47:15 p.m.
DTW
-
SEA
1 stop7h 48m
Delta
Wed 15/411:14 p.m.
SEA
-
DTW
Nonstop4h 16m
Delta
Deal found 23/2C$ 311

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 26 February 2026.

Round-trip from

C$ 272

One-way from

C$ 123

Popular in

October

Cheapest in

January

Average price

C$ 420

Good round-trip deal

C$ 262 or less

Good one-way deal

C$ 188 or less
Delta
  • Delta
  • 5/5-6/5
  • Nonstop
  • 9h 13m total
  • Detroit to Seattle
Search Deals
Southwest
  • Southwest
  • 30/3
  • 1 total stop
  • 7h 05m total
  • Detroit to Seattle
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 26 February 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

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 24/4

5:14 p.m.-7:09 p.m.

Nonstop4h 55m

Seattle/Tacoma Intl

Wed 29/4

12:29 a.m.-12:57 p.m.

1 stop9h 28m

C$ 435

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Mon 6/7

8:00 p.m.-10:05 p.m.

Nonstop5h 05m

Seattle/Tacoma Intl

Tue 14/7

11:05 p.m.-6:27 a.m.

Nonstop4h 22m

C$ 448

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 5/6

6:08 p.m.-8:09 p.m.

Nonstop5h 01m

Seattle/Tacoma Intl

Wed 10/6

9:15 a.m.-4:33 p.m.

Nonstop4h 18m

C$ 448

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Tue 17/3

4:29 p.m.-6:26 p.m.

Nonstop4h 57m

Seattle/Tacoma Intl

Fri 20/3

11:15 p.m.-6:27 a.m.

Nonstop4h 12m

C$ 448

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Thu 28/5

8:55 p.m.-10:48 p.m.

Nonstop4h 53m

Seattle/Tacoma Intl

Mon 1/6

5:30 a.m.-12:50 p.m.

Nonstop4h 20m

C$ 448

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 13/3

4:50 p.m.-10:53 p.m.

1 stop9h 03m

Seattle/Tacoma Intl

Fri 20/3

11:59 p.m.-9:46 a.m.

1 stop6h 47m

C$ 489

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Thu 2/4

4:25 p.m.-11:23 p.m.

1 stop9h 58m

Seattle/Tacoma Intl

Mon 6/4

11:15 p.m.-6:27 a.m.

Nonstop4h 12m

C$ 516

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Thu 21/5

4:10 p.m.-10:55 p.m.

1 stop9h 45m

Seattle/Tacoma Intl

Tue 26/5

11:59 p.m.-8:54 a.m.

1 stop5h 55m

C$ 523

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 5/6

8:30 p.m.-12:25 a.m.

1 stop6h 55m

Seattle/Tacoma Intl

Wed 10/6

9:30 a.m.-8:20 p.m.

2 stops7h 50m

C$ 580

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Sun 17/5

6:05 p.m.-11:59 p.m.

1 stop8h 54m

Seattle/Tacoma Intl

Mon 25/5

10:40 p.m.-9:57 a.m.

1 stop8h 17m

C$ 591

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/2

Showing 1-10 of 20 resultsSorted by cheapest first
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.
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

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 20 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$ 234). Flying from Detroit to Seattle in August is currently the most expensive (average of C$ 365). 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 26 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 26 February 2026.

The most flights from DTT to SEA are scheduled on a Tuesday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 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 26 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.
Alaska Airlines
8.0
Very good
11,961 reviews
Check prices

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,961 reviews
Alaska Airlines
8.0
Very good
11,961 reviews
Check prices

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,240 reviews
Alaska Airlines
8.0
Very good
11,961 reviews
Check prices

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,837 reviews
Alaska Airlines
8.0
Very good
11,961 reviews
Check prices

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Frontier
5.7
Fair
3,041 reviews
Alaska Airlines
8.0
Very good
11,961 reviews
Check prices

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

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 51m 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 55m. Alaska Airlines provides one of the quickest options available for as low as C$ 435. 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$ 175, was found to be the cheapest airline from Detroit to Seattle.Alternate airlines to your destination round-trip include Hawaiian Airlines and Alaska 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 (72%), Alaska Airlines (72%) or Hawaiian Airlines (72%) 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$ 156. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 359 on average, our data indicates C$ 348 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$ 234). Flying from Detroit to Seattle in August is currently the most expensive (average of C$ 365). 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
Leavenworth
Mukilteo
Tacoma
Kent
Bothell
Cashmere
Tukwila
Olympia
Renton
Marysville
Lynnwood
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
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 26 February 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 175AverageC$ 434FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Hawaiian AirlinesCheapestC$ 239AverageC$ 505FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Alaska AirlinesCheapestC$ 262AverageC$ 537FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines 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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