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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SEA
1 Feb — 8 Feb1
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 February, booked 48 days in advance, depart on a Thursday or Wednesday and return on a Wednesday
Cheap flight deals from Detroit to Seattle
Enter your travel dates to find the best prices.
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 2 January 2026.
Mon 2/38:05 p.m.DTW - SEA
Nonstop5h 00mDelta
Mon 9/311:15 p.m.SEA - DTW
Nonstop4h 11mDelta
Deal found 30/12C$ 273
Fri 30/15:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Tue 3/29:02 a.m.SEA - DTW
Nonstop4h 17mAlaska Airlines
Deal found 1/1C$ 273
Thu 19/25:22 p.m.DTW - SEA
Nonstop5h 13mAlaska Airlines
Sun 22/29:12 a.m.SEA - DTW
Nonstop4h 14mAlaska Airlines
Deal found 1/1C$ 273
Fri 23/17:45 p.m.DTW - SEA
Nonstop5h 04mDelta
Sat 24/11:30 p.m.SEA - DTW
Nonstop4h 15mDelta
Deal found 31/12C$ 273
Fri 6/25:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Tue 10/29:02 a.m.SEA - DTW
Nonstop4h 17mAlaska Airlines
Deal found 1/1C$ 273
Sat 31/17:45 p.m.DTW - SEA
Nonstop5h 04mDelta
Mon 9/27:15 a.m.SEA - DTW
1 stop9h 00mDelta
Deal found 1/1C$ 287
Sat 14/25:22 p.m.DTW - SEA
Nonstop5h 13mAlaska Airlines
Wed 18/29:12 a.m.SEA - DTW
Nonstop4h 14mAlaska Airlines
Deal found 1/1C$ 273
Fri 20/28:05 p.m.DTW - SEA
Nonstop5h 00mDelta
Mon 23/211:17 a.m.SEA - DTW
1 stop8h 03mDelta
Deal found 31/12C$ 287
Fri 30/15:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Sun 1/29:02 a.m.SEA - DTW
Nonstop4h 17mAlaska Airlines
Deal found 1/1C$ 273
Thu 22/18:25 a.m.DTW - SEA
1 stop9h 29mDelta
Mon 26/16:05 a.m.SEA - DTW
Nonstop4h 16mDelta
Deal found 31/12C$ 287
Fri 23/18:00 a.m.DTW - SEA
1 stop10h 00mDelta
Sun 1/211:10 p.m.SEA - DTW
Nonstop4h 20mDelta
Deal found 1/1C$ 287
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 2 January 2026.
Fri 30/15:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Sun 1/29:02 a.m.SEA - DTW
Nonstop4h 17mAlaska Airlines
Deal found 1/1C$ 273
Tue 31/38:05 p.m.DTW - SEA
Nonstop4h 59mDelta
Tue 7/46:00 a.m.SEA - DTW
Nonstop4h 09mDelta
Deal found 31/12C$ 285
Tue 14/47:52 p.m.DTW - SEA
Nonstop4h 57mDelta
Sat 18/46:00 a.m.SEA - DTW
Nonstop4h 17mDelta
Deal found 2/1C$ 298
Fri 1/57:52 p.m.DTW - SEA
Nonstop4h 57mDelta
Sat 9/56:00 a.m.SEA - DTW
Nonstop4h 19mDelta
Deal found 31/12C$ 312
Thu 29/15:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Tue 31/38:35 a.m.SEA - DTW
Nonstop4h 21mAlaska Airlines
Deal found 30/12C$ 313
Thu 12/28:15 p.m.DTW - SEA
Nonstop5h 05mDelta
Sun 15/26:00 a.m.SEA - DTW
Nonstop4h 11mDelta
Deal found 31/12C$ 314
Fri 3/44:52 p.m.DTW - SEA
Nonstop5h 04mHawaiian Airlines
Fri 17/48:35 a.m.SEA - DTW
Nonstop4h 24mHawaiian Airlines
Deal found 1/1C$ 322
Thu 30/47:52 p.m.DTW - SEA
Nonstop4h 57mDelta
Mon 4/511:14 p.m.SEA - DTW
Nonstop4h 16mDelta
Deal found 2/1C$ 325
Sun 8/25:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Wed 11/29:02 a.m.SEA - DTW
Nonstop4h 17mAlaska Airlines
Deal found 31/12C$ 328
Thu 14/56:20 p.m.DTW - SEA
Nonstop5h 09mDelta
Wed 20/53:40 p.m.SEA - DTW
Nonstop4h 17mDelta
Deal found 31/12C$ 338
Sun 5/48:25 a.m.DTW - SEA
Nonstop5h 08mDelta
Tue 14/49:47 a.m.SEA - DTW
Nonstop4h 23mDelta
Deal found 31/12C$ 339
Mon 6/44:52 p.m.DTW - SEA
Nonstop5h 04mAlaska Airlines
Sat 11/48:35 a.m.SEA - DTW
Nonstop4h 24mAlaska Airlines
Deal found 31/12C$ 340
Last-minute flights from Detroit to Seattle
Discover last-minute flight deals from Detroit to Seattle. Data last updated 2 January 2026 and is based on user searches.
Thu 22/17:45 p.m.DTW - SEA
Nonstop5h 04mDelta
Fri 23/11:30 p.m.SEA - DTW
Nonstop4h 15mDelta
Deal found 1/1C$ 328
Thu 22/15:30 a.m.DTW - SEA
2 stops11h 27mUnited Airlines
Wed 28/110:58 a.m.SEA - DTW
1 stop6h 28mUnited Airlines
Deal found 31/12C$ 346
Fri 23/18:00 a.m.DTW - SEA
1 stop10h 00mDelta
Sun 1/211:10 p.m.SEA - DTW
Nonstop4h 20mDelta
Deal found 1/1C$ 287
Fri 23/111:05 a.m.DTW - SEA
2 stops10h 22mUnited Airlines
Sun 25/110:58 a.m.SEA - DTW
1 stop6h 28mUnited Airlines
Deal found 1/1C$ 360
Tue 27/17:15 a.m.DTW - SEA
1 stop7h 17mUnited Airlines
Tue 3/28:40 a.m.SEA - DTW
2 stops8h 46mUnited Airlines
Deal found 1/1C$ 332
Wed 28/111:20 a.m.DTW - SEA
1 stop9h 25mAmerican Airlines
Wed 4/28:04 a.m.SEA - DTW
1 stop6h 21mAmerican Airlines
Deal found 31/12C$ 299
Thu 29/15:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Tue 31/38:35 a.m.SEA - DTW
Nonstop4h 21mAlaska Airlines
Deal found 30/12C$ 313
Thu 29/17:45 p.m.DTW - SEA
Nonstop5h 04mDelta
Tue 31/37:20 a.m.SEA - DTW
1 stop10h 22mDelta
Deal found 30/12C$ 342
Thu 29/17:45 p.m.DTW - SEA
Nonstop5h 04mDelta
Wed 1/46:00 a.m.SEA - DTW
Nonstop4h 09mDelta
Deal found 30/12C$ 354
Fri 30/15:15 p.m.DTW - SEA
Nonstop5h 20mAlaska Airlines
Sun 1/29:02 a.m.SEA - DTW
Nonstop4h 17mAlaska Airlines
Deal found 1/1C$ 273
Fri 30/18:08 p.m.DTW - SEA
1 stop7h 01mDelta
Sun 1/25:40 p.m.SEA - DTW
1 stop9h 00mDelta
Deal found 1/1C$ 301
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 2 January 2026.
Sun 15/26:00 a.m.DTW - SEA
2 stops40h 59mFrontier
Deal found 31/12C$ 159
Tue 17/33:30 p.m.DTW - SEA
1 stop8h 44mUnited Airlines
Deal found 31/12C$ 163
Mon 2/27:45 p.m.DTW - SEA
Nonstop5h 04mDelta
Deal found 31/12C$ 165
Sat 31/19:00 a.m.DTW - SEA
2 stops12h 26mUnited Airlines
Deal found 1/1C$ 170
Wed 1/48:05 p.m.DTW - SEA
Nonstop4h 59mDelta
Deal found 1/1C$ 177
Mon 30/38:18 p.m.DTW - SEA
1 stop6h 45mDelta
Deal found 1/1C$ 178
Fri 23/19:00 a.m.DTW - SEA
2 stops12h 26mUnited Airlines
Deal found 1/1C$ 184
Thu 2/44:29 p.m.DTW - SEA
Nonstop4h 57mDelta
Deal found 1/1C$ 191
Wed 7/15:30 a.m.DTW - SEA
1 stop9h 02mUnited Airlines
Deal found 31/12C$ 194
Sun 15/25:22 p.m.DTW - SEA
Nonstop5h 13mAlaska Airlines
Deal found 31/12C$ 206
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 2 January 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 629,999 searches. Data last updated 2 January 2026.
Use the filters below to find and compare flights from Detroit to Seattle that are best for you.
Fly from
Detroit
Fly to
Seattle
Route
Depart
Return
Price
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Mon 2/3
8:05 p.m.-10:05 p.m.
Nonstop5h 00m
Seattle/Tacoma Intl
Mon 9/3
11:15 p.m.-6:26 a.m.
Nonstop4h 11m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 30/1
5:15 p.m.-7:35 p.m.
Nonstop5h 20m
Seattle/Tacoma Intl
Tue 3/2
9:02 a.m.-4:19 p.m.
Nonstop4h 17m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Thu 19/2
5:22 p.m.-7:35 p.m.
Nonstop5h 13m
Seattle/Tacoma Intl
Sun 22/2
9:12 a.m.-4:26 p.m.
Nonstop4h 14m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 23/1
7:45 p.m.-9:49 p.m.
Nonstop5h 04m
Seattle/Tacoma Intl
Sat 24/1
1:30 p.m.-8:45 p.m.
Nonstop4h 15m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 6/2
5:15 p.m.-7:35 p.m.
Nonstop5h 20m
Seattle/Tacoma Intl
Tue 10/2
9:02 a.m.-4:19 p.m.
Nonstop4h 17m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Sat 14/2
5:22 p.m.-7:35 p.m.
Nonstop5h 13m
Seattle/Tacoma Intl
Wed 18/2
9:12 a.m.-4:26 p.m.
Nonstop4h 14m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 30/1
5:15 p.m.-7:35 p.m.
Nonstop5h 20m
Seattle/Tacoma Intl
Sun 1/2
9:02 a.m.-4:19 p.m.
Nonstop4h 17m
C$ 273
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Sat 31/1
7:45 p.m.-9:49 p.m.
Nonstop5h 04m
Seattle/Tacoma Intl
Mon 9/2
7:15 a.m.-7:15 p.m.
1 stop9h 00m
C$ 287
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Fri 20/2
8:05 p.m.-10:05 p.m.
Nonstop5h 00m
Seattle/Tacoma Intl
Mon 23/2
11:17 a.m.-10:20 p.m.
1 stop8h 03m
C$ 287
DetroitSeattle
DTW - SEA
DTWSEA
Detroit Metropolitan Wayne County
Thu 22/1
8:25 a.m.-2:54 p.m.
1 stop9h 29m
Seattle/Tacoma Intl
Mon 26/1
6:05 a.m.-1:21 p.m.
Nonstop4h 16m
C$ 287
Flights are sorted by cheapest round-trip flights first.
Deals found on 31/12
Showing 1-10 of 21 results
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
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 26 December 2025.
To ensure you get the cheapest price possible for a flight from Detroit to Seattle, you should look to book at least 48 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, February is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 228). Flying from Detroit to Seattle in August is currently the most expensive (average of C$ 362). 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 2 January 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 2 January 2026.
The most flights from DTT to SEA are scheduled on a Friday (19 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 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.
Los Angeles (LAX) – chosen by Cheapflights users on 33% 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.
Los Angeles (LAX) is the most affordable 1-stop option, with an average round-trip price of C$ 279.
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 Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 1h 27m.
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 2 January 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.
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 5h 09m for a nonstop flight. There are 11 flights from All airports to Seattle per day from 4 airlines.
How long is the flight from Detroit to Seattle?
A quick flight from Detroit to Seattle can take about 5h. Delta provides one of the quickest options available for as low as C$ 273. 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 Spirit Airlines and Hawaiian Airlines. These flights start at 65% 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 (74%), Korean Air (72%) or Air France (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$ 210. While the most popular route (Detroit Metropolitan Wayne County - Seattle/Tacoma Intl) can be booked for C$ 517 on average, our data indicates C$ 465 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, February is the cheapest month in which you can book a flight from Detroit to Seattle (average of C$ 228). Flying from Detroit to Seattle in August is currently the most expensive (average of C$ 362). 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.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 2 January 2026.
Discover the top 4 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 2 January 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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyze navigation, to offer and measure personalized advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review and update your choices anytime by clicking the ’Privacy Preferences’ link in the page side navigation.