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Cheap flights from Detroit to Seattle from C$ 145

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
14 May — 21 May1
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 February, booked 65 days in advance, depart on a Saturday or Tuesday and return on a Friday

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 14 April 2026.

Thu 23/410:27 p.m.
DTW
-
SEA
1 stop14h 25m
Frontier
Thu 30/47:12 p.m.
SEA
-
DTW
1 stop12h 46m
Frontier
Deal found 9/4C$ 378
Sat 25/46:50 a.m.
DTW
-
SEA
2 stops29h 37m
Multiple Airlines
Sat 2/57:12 p.m.
SEA
-
DTW
1 stop12h 46m
Multiple Airlines
Deal found 9/4C$ 425
Fri 24/410:27 p.m.
DTW
-
SEA
1 stop14h 00m
Frontier
Sat 2/510:57 a.m.
SEA
-
DTW
2 stops19h 17m
Frontier
Deal found 9/4C$ 445
Fri 24/410:27 p.m.
DTW
-
SEA
1 stop14h 00m
Multiple Airlines
Fri 1/510:17 p.m.
SEA
-
DTW
Nonstop4h 27m
Multiple Airlines
Deal found 9/4C$ 447
Fri 24/410:27 p.m.
DTW
-
SEA
1 stop14h 00m
Frontier
Fri 1/510:06 p.m.
SEA
-
DTW
2 stops23h 38m
Frontier
Deal found 9/4C$ 451
Thu 23/410:27 p.m.
DTW
-
SEA
1 stop14h 25m
Frontier
Sat 2/510:57 a.m.
SEA
-
DTW
2 stops19h 17m
Frontier
Deal found 9/4C$ 460
Sat 6/610:01 p.m.
DTW
-
SEA
1 stop23h 34m
Multiple Airlines
Tue 16/67:41 p.m.
SEA
-
DTW
2 stops18h 12m
Multiple Airlines
Deal found 13/4C$ 465
Thu 23/410:27 p.m.
DTW
-
SEA
1 stop14h 25m
Frontier
Fri 1/510:06 p.m.
SEA
-
DTW
2 stops23h 38m
Frontier
Deal found 9/4C$ 466
Fri 1/510:27 p.m.
DTW
-
SEA
1 stop14h 00m
Frontier
Sun 3/510:25 p.m.
SEA
-
DTW
2 stops23h 19m
Frontier
Deal found 14/4C$ 484
Sat 25/46:50 a.m.
DTW
-
SEA
2 stops29h 37m
Multiple Airlines
Fri 1/511:07 a.m.
SEA
-
DTW
1 stop17h 13m
Multiple Airlines
Deal found 9/4C$ 485
Fri 5/66:05 p.m.
DTW
-
SEA
2 stops27h 30m
Frontier
Tue 16/67:41 p.m.
SEA
-
DTW
1 stop13h 56m
Frontier
Deal found 13/4C$ 488
Fri 24/410:27 p.m.
DTW
-
SEA
1 stop14h 00m
Frontier
Thu 30/47:12 p.m.
SEA
-
DTW
2 stops21h 41m
Frontier
Deal found 9/4C$ 491

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 14 April 2026.

Round-trip from

C$ 425

One-way from

C$ 145

Popular in

June

Cheapest in

January

Average price

C$ 521

Good round-trip deal

C$ 535 or less
Frontier
  • Frontier
  • 25/4-2/5
  • 3 total stops
  • 42h 23m total
  • Detroit to Seattle
Search Deals
Frontier
  • Frontier
  • 5/5
  • 1 total stop
  • 28h 54m total
  • Detroit to Seattle
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 120 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 April 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 14 April 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
Quickest round-trip

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Mon 6/7

6:00 a.m.-7:56 a.m.

Nonstop4h 56m

Seattle/Tacoma Intl

Tue 14/7

5:20 a.m.-12:30 p.m.

Nonstop4h 10m

C$ 535

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Thu 2/7

6:00 a.m.-7:56 a.m.

Nonstop4h 56m

Seattle/Tacoma Intl

Wed 8/7

5:20 a.m.-12:30 p.m.

Nonstop4h 10m

C$ 535

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Wed 8/7

8:34 p.m.-10:33 p.m.

Nonstop4h 59m

Seattle/Tacoma Intl

Wed 15/7

5:20 a.m.-12:30 p.m.

Nonstop4h 10m

C$ 535

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Sat 2/5

4:30 p.m.-6:28 p.m.

Nonstop4h 58m

Seattle/Tacoma Intl

Fri 15/5

9:30 a.m.-5:05 p.m.

Nonstop4h 35m

C$ 535

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

3:40 p.m.-11:08 p.m.

Nonstop4h 28m

C$ 535

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Sun 17/5

7:09 a.m.-9:10 a.m.

Nonstop5h 01m

Seattle/Tacoma Intl

Mon 25/5

10:23 p.m.-5:49 a.m.

Nonstop4h 26m

C$ 537

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Tue 9/6

3:50 p.m.-10:19 p.m.

1 stop9h 29m

Seattle/Tacoma Intl

Sat 13/6

5:30 a.m.-12:40 p.m.

Nonstop4h 10m

C$ 549

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Fri 5/6

8:55 p.m.-10:46 p.m.

Nonstop4h 51m

Seattle/Tacoma Intl

Tue 16/6

5:48 p.m.-5:45 a.m.

1 stop8h 57m

C$ 549

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Wed 10/6

7:50 p.m.-12:20 a.m.

1 stop7h 30m

Seattle/Tacoma Intl

Sat 13/6

11:05 p.m.-10:45 a.m.

1 stop8h 40m

C$ 563

DetroitSeattle

DTW - SEA

DTWSEA

Detroit Metropolitan Wayne County

Sun 17/5

9:10 a.m.-11:05 a.m.

Nonstop4h 55m

Seattle/Tacoma Intl

Mon 25/5

10:15 a.m.-11:19 p.m.

1 stop10h 04m

C$ 585

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/4

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 10 April 2026.

To ensure you get the cheapest price possible for a flight from Detroit to Seattle, you should look to book at least 65 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, November is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 242). 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 14 April 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 14 April 2026.

The most flights from DTT to SEA are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, 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?

What’s the top layover airport for flights from Detroit to Seattle?

Share of one-stop round-trip flights from Detroit to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.

Denver (DEN) – chosen by Cheapflights users on 63% of one-stop itineraries from Detroit to Seattle on Cheapflights.

What’s the cheapest layover airport for flights from Detroit to Seattle?

Average round-trip fare for 1-stop flights from Detroit to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of C$ 355.

What’s the fastest layover option from Detroit to Seattle?

Shortest average travel time for 1-stop one-way flights from Detroit to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 6h 50m.

Which airport typically offers the quickest layover for flights from Detroit to Seattle?

Average layover duration for 1-stop one-way flights from Detroit to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 4h 30m.

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 14 April 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
7.9
Good
12,235 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,235 reviews
Alaska Airlines
7.9
Good
12,235 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,404 reviews
Alaska Airlines
7.9
Good
12,235 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Hawaiian Airlines
7.8
Good
2,838 reviews
Alaska Airlines
7.9
Good
12,235 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Frontier
5.7
Fair
2,991 reviews
Alaska Airlines
7.9
Good
12,235 reviews
Check prices

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 9 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 14h. Frontier provides one of the quickest options available for as low as C$ 445. Detroit and Seattle are separated by a distance of 3090 km.

  • What are the cheapest airlines flying from Detroit to Seattle round-trip?

    Hawaiian Airlines, at C$ 242, 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 51% 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 Air Tahiti Nui (83%), Korean Air (71%) or American Airlines (70%) 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$ 385. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 512 on average, our data indicates C$ 563 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, November is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 242). 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.

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
Detroit to Portland flights
O'Hare Intl to Seattle 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 14 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapestC$ 242AverageC$ 510FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Alaska AirlinesCheapestC$ 264AverageC$ 555FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapestC$ 288AverageC$ 480FlexibilityNo 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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