Cheap Flights from Detroit (DTW) to Seattle (SEA)

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Flight deals from Detroit Wayne County to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Detroit Wayne County to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Detroit Wayne County to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Detroit Wayne County to Seattle / Tacoma International flights are currently cheapest in October.

Direct flights from Detroit Wayne County to Seattle / Tacoma International

Detroit Wayne County to Seattle / Tacoma International: Alternative routes

Compare routes from Detroit Wayne County to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Detroit to Seattle: Flight information

The things to know before you go.
Cheapest flight found$147
Cheapest month to flyOctober
Average flight time5 hrs, 1 min
Most popular airlineDelta
Average flights per week180

Finding cheap flights from Detroit Wayne County to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Detroit Wayne County to Seattle / Tacoma International is $147. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 1 minute is the average flight time from Detroit Wayne County to Seattle / Tacoma International.
Delta, Air France and Air Tahiti Nui fly direct from Detroit Wayne County to Seattle / Tacoma International.
As of July 2025, there are 180 flights per week flying from Detroit Wayne County to Seattle / Tacoma International.
The cheapest month to fly from Detroit Wayne County to Seattle / Tacoma International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Detroit Wayne County Airport to Seattle / Tacoma International Airport on Wednesday, 8 October 2025.
Yes – the average flight time is 5 hours and 1 minute.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and Hawaiian Airlines offer the cheapest flight tickets to Seattle / Tacoma International.

Flying from Detroit Metropolitan Wayne County Airport (DTW) to Seattle-Tacoma International Airport (SEA): what you need to know

  • Around 5 hours is how long you can expect to be in the air on a direct flight from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport.

  • The timezone in Seattle is UTC-7, which is three hours behind Detroit.

  • Flights from DTW to SEA start from 06:35 — the first with Delta Air Lines. The latest departure is at 20:25 with Delta Air Lines. Overall, there are 52 weekly Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport flights.

  • Get to the airport on time so you don't miss your DTW to SEA flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid a last-minute sprint to the gate.

  • Flying during a peak month such as August? School holidays and other popular seasons can mean longer lines and delays at airport checkpoints. Be extra cautious and get there up to four hours before international flights and two hours before a domestic departure.

  • Alaska Airlines has direct flights from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport. Book with this popular airline, then get ready to check out the sights in Seattle — and maybe even more of United States if you have time.

  • The majority of travellers choose to travel with Alaska Airlines on this route.

  • Delta Air Lines is the most punctual carrier offering DTW to SEA flights. A reliable 87.01% of its departures on this route arrive on time.

  • Think about adding a stopover when booking your ticket from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport. Just uncheck 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here are some options between DTW and SEA:

    • O'Hare International Airport

    • Denver International Airport

    • Chicago Midway International Airport

How to find the cheapest flights from Detroit Metropolitan Wayne County Airport (DTW) to Seattle-Tacoma International Airport (SEA)

  • The cheapest price we've found for a one-way Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport flight is $82. A return fare right now is $147. Depending on the availability and when you book, these fares may change.

  • To get cheap tickets from DTW to SEA, book your trip seven months ahead of your planned departure.

  • Schedule your trip for June. That's the cheapest month for flights from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport. If you're flexible with your dates, try out the 'Whole month' tool to see the lowest price across each month.

  • Save time searching for cheap flights from DTW to SEA by setting up a Price Alert. You'll get an email or notification through the app when a new discounted fare appears.

  • Pick your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport.

Handy information about Detroit Metropolitan Wayne County Airport (DTW)

  • You'll find DTW at 1 Detroit Metro Airport.

  • Of all flights leaving Detroit Metropolitan Wayne County Airport, 75.1% arrive on time at their destination.

  • To reach Detroit Metropolitan Wayne County Airport from central Detroit, it'll take around 25 minutes if you're going by car. Of course, this depends on traffic. It's approximately 32 kilometres from the airport to the city centre.

  • The journey when using public transport takes about 1 hour 10 minutes.

  • Need a handy hotel near DTW? If you're boarding an early flight from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport, these stays will put you moments from your departure gate:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • Seattle-Tacoma International Airport is approximately 23 kilometres from the centre of Seattle. The drive time takes around 20 minutes.

  • It takes around 55 minutes when travelling by public transport.

When to fly to Seattle-Tacoma International Airport (SEA)

  • It's time to choose your travel dates for your flight from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport. July is the busiest month to head to Seattle. If you want a quieter vibe, go in May.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Lock in your flights from Detroit Metropolitan Wayne County Airport to Seattle-Tacoma International Airport in this month if you like this kind of weather.

  • Search for cheap tickets from DTW to SEA in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

Explore more of United States

  • You've seen Seattle, now it's time to discover more of United States. Travel around 241 kilometres south to Portland to check off its popular sights. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you'll have a full itinerary ahead.

  • Around 370 kilometres east of Seattle, Spokane is another essential stop in United States. Get a taste of what this destination has to offer at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.