Best Deals on Flights from DTW to SEA: Your Guide to the Emerald City

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$139.58

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May 2026FrontierDTWSEA

Last updated Feb 16, 2026

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Tracking the May 7, 2026 departure — the cheapest date we found.

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Detroit (DTW)

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Seattle (SEA)

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Connecting the Motor City to the Pacific Northwest, the flight route from Detroit Metropolitan Wayne County Airport (DTW) to Seattle-Tacoma International Airport (SEA) serves as a vital link between two major American economic hubs. Whether you are traveling for a high-tech business meeting at Amazon's headquarters or seeking a scenic getaway to the Olympic Peninsula, this transcontinental journey spans approximately 1,927 miles and offers passengers a front-row seat to the changing landscapes of the Midwest, Great Plains, and the majestic Rocky Mountains. As one of the longest domestic routes in the lower forty-eight, travelers can expect a flight duration of roughly four and a half to five hours, making it a perfect opportunity to catch up on films or enjoy the premium amenities offered by major carriers like Delta Air Lines and Alaska Airlines.

Travel Tips

When flying west from Detroit to Seattle, remember that you will be gaining three hours due to time zone changes, which can lead to early-morning wake-up calls; try to adjust your sleep schedule a day in advance to mitigate the effects of jet lag. If you are flying during the winter months, be prepared for potential de-icing delays at DTW and consider booking a flight with a slightly longer layover if you aren't flying direct. For the best views of the Cascade Range and Mount Rainier upon arrival, request a window seat on the left side of the aircraft, as the typical landing patterns often provide a breathtaking panorama of the peaks. Lastly, always pack a versatile waterproof layer in your carry-on, as Seattle's weather can shift from misty drizzle to sunshine in a matter of minutes, regardless of the season, ensuring you stay comfortable the moment you step out of the terminal.

Airport Information

Detroit (DTW)

Detroit Metropolitan Wayne County Airport (DTW) is a major international gateway and a primary hub for Delta Air Lines, known for its modern McNamara Terminal which features a stunning indoor tram and a colorful light tunnel. Located in Romulus, Michigan, the airport provides a wide array of dining options ranging from local Coney Island favorites to high-end bistros, ensuring travelers have plenty of choices before their long flight to the West Coast.

Seattle (SEA)

Seattle-Tacoma International Airport (SEA), commonly referred to as Sea-Tac, is the largest airport in the Pacific Northwest region and serves as the primary hub for Alaska Airlines and a major West Coast gateway for Delta. The airport has undergone significant recent renovations, including the spectacular International Arrivals Facility and an expanded North Satellite terminal, offering travelers a vibrant atmosphere filled with local Pacific Northwest art, live music performances, and views of the airfield.

Seasonal Pricing Patterns

Flight prices between Detroit and Seattle tend to fluctuate significantly based on the time of year and Pacific Northwest weather patterns. The most expensive time to fly is typically during the peak summer months of July and August when the weather in Seattle is exceptionally clear and dry, drawing in thousands of tourists. Conversely, savvy travelers can often find the cheapest fares during the late autumn months of October and November or the mid-winter period in January and February, provided they avoid holiday peaks around Thanksgiving and Christmas.

Frequently Asked Questions

Which airlines fly non-stop from DTW to SEA?

Delta Air Lines and Alaska Airlines are the primary carriers offering consistent daily non-stop service between Detroit and Seattle.

How long is the average flight from Detroit to Seattle?

A direct flight typically takes between 4 hours and 45 minutes to 5 hours and 15 minutes, depending on wind speeds and aircraft type.

What is the best way to get from Sea-Tac to downtown Seattle?

The Sound Transit Link Light Rail is a cost-effective and efficient way to reach downtown from the airport, with trains running every 8-15 minutes throughout the day.

Is there a significant time difference between the two cities?

Yes, Seattle is in the Pacific Time Zone, which is three hours behind Detroit's Eastern Time Zone.

Does DTW offer parking for long-term travelers?

Yes, DTW offers several long-term parking options including the Big Blue Deck and the McNamara Parking Garage, as well as various private off-site lots with shuttle services.

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