Cheap Flights from Detroit to Seattle | EazAir
Detroit to Seattle flight insights
Average flight time
~4h 40m (estimated)
DTW → SEA
Cheapest month
—
Based on cached fare history
Cheapest cached price
$198
Checking live fares…
Prices shown may not be current. Last checked: Sep 3, 2026.
Planning a trip from Detroit to Seattle? The average flight time on this route is ~4h 40m (estimated). The lowest fare we have cached for this route is $198 (last checked Sep 3, 2026).
Detroit to Seattle covers a straight-line distance of about 1,922 miles. Based on that distance, a nonstop flight would take approximately ~4h 40m (estimated). Actual flight time varies by airline, aircraft and routing.
Route Quick Facts
| Origin | Detroit (DTW) |
|---|---|
| Destination | Seattle (SEA) |
| Average Flight Time | — |
| Cheapest Month to Fly | — |
| Current Lowest Fare | $198 |
| Fares Last Checked | Sep 3, 2026 |
Flight deals from Detroit to Seattle
Traveling from the Great Lakes to the Pacific Northwest covers a flight distance of roughly 1,920 miles. Direct flights from Detroit Metropolitan Wayne County Airport (DTW) to Seattle-Tacoma International Airport (SEA) typically take around four hours and forty-five minutes. Passengers heading west will cross three time zones, meaning an early morning departure from Michigan gets you into Washington State with plenty of daylight remaining. Several major carriers operate on the Detroit to Seattle route. Delta Air Lines maintains a major hub at DTW and frequently offers direct connections to SEA. Travelers can also fly this transcontinental path via connecting itineraries through carriers like Alaska Airlines, United Airlines, and American Airlines, which usually route through cities like Chicago, Denver, or Minneapolis. Summer represents the peak travel season for the Detroit to Seattle corridor, with July and August seeing high passenger volumes as travelers escape Midwestern humidity for mild Pacific coastal weather. Conversely, January and February see lighter passenger traffic along this specific flight path, making winter an excellent time to search for open seats. Late spring and early autumn provide a balanced travel window with manageable crowds boarding planes at DTW destined for SEA.

About Seattle
Popular areas to know in Seattle include Capitol Hill, Ballard, and Fremont.
Mild, wet winters and dry, mild summers — the Pacific Northwest's rainy reputation is strongest from October through April.
Frequently asked questions
How long is a flight from Detroit to Seattle?
Which airports serve flights from Detroit to Seattle?
Which airlines fly direct from Detroit to Seattle?
When is the best time to book flights from Detroit to Seattle?
What is the busiest month to fly from Detroit to Seattle?
Which month has the lowest passenger volume for flights from Detroit to Seattle?
What is the time difference when flying from Detroit to Seattle?
Do airlines flying from Detroit to Seattle charge for checked baggage?
Where are common layovers on flights from Detroit to Seattle?
What is the flight distance from Detroit to Seattle?
Are there early morning departures from Detroit to Seattle?
How far is it from Detroit to Seattle?
What ID do I need to fly from Detroit to Seattle?
Which airlines operate flights from Detroit to Seattle?
What's the weather usually like in Seattle?
Airline baggage policies
Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.
| Airline | Cabin bag | Checked bag |
|---|---|---|
| Delta Air Lines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it |
| American Airlines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it |
| United Airlines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Economy and above; Basic Economy usually excludes it |
| Southwest Airlines | 1 carry-on + 1 personal item | 2 checked bags included on every fare — a long-standing, well-known Southwest policy |
| JetBlue Airways | 1 personal item on the cheapest (Blue Basic) fare; a carry-on is added on higher fares | Not included on Blue Basic; typically included from Blue Plus and above |
| Alaska Airlines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Main and above; Saver fares usually exclude it |
| Spirit Airlines | 1 personal item included; a full-sized carry-on is a paid add-on | Not included on the base fare — a paid add-on at every fare tier |
| Frontier Airlines | 1 personal item included; a full-sized carry-on is a paid add-on | Not included on the base fare — a paid add-on at every fare tier |
Travel tips
Arrive early for domestic flights
TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.
Pack a mixed carry-on
Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.
Ease jet lag on longer routes
On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.
Screenshot your confirmation
Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.
Check in online when it opens
Most airlines open online check-in 24 hours before departure — checking in early can help with seat selection and, on some airlines, boarding group assignment.
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