Your next trip, last seen at €82
Lowest observedFrontier Airlines · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €82, departing 10 Nov 2026 (Last checked: 22 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 85Check live prices for this route
- Airlines seen
- Delta Air Lines, Alaska Airlines, American Airlines, Frontier Airlines, Southwest Airlines, Sun Country Airlines, United Airlines (7)
- Reported fastest flight
- 5h 01m
- Non-stop
- Yes
About this route
Explore the fares we observed from Detroit to Seattle. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,111 km
- Reported fastest flight
- 5h 01m
- Alternative airports
- DET, YIP, BFI
Route-level information; individual journeys vary.
Published schedules report non-stop service with Delta Air Lines. Check current timetables.
A clearer picture of your fare
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| Alaska Airlines | 13 / 84 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Detroit Metropolitan Wayne County Airport (DTW) → Detroit, city gazetteer reference point (42.3314, -83.0458): ≈ 29 km.
- King County International Airport - Boeing Field (BFI) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 9 km.
- Seattle–Tacoma International Airport (SEA) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 18 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Detroit to Seattle: November 2026, from €82 (checked 22 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €193 | 3 |
| November 2026 | €82 | 29 |
| December 2026 | €82 | 31 |
| January 2027 | €82 | 22 |
Lowest fare by day of the week
Cheapest day of the week from Detroit to Seattle: Tuesday, from €82 (checked 22 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €106 | 12 |
| Tuesday | €82 | 12 |
| Wednesday | €82 | 12 |
| Thursday | €123 | 13 |
| Friday | €110 | 13 |
| Saturday | €92 | 12 |
| Sunday | €99 | 11 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Detroit to Seattle by days until departure (8 to 30 days): €82 (checked 22 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €173 | 8 |
| 8 to 30 days | €82 | 23 |
| 31 to 60 days | €82 | 29 |
| 61 days or more | €82 | 25 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Detroit to Seattle: Frontier Airlines, from €82 (checked 22 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €82Nov 10, 2026 | 71 |
| Alaska Airlines | €190Dec 23, 2026 | 13 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Detroit to Seattle?
The lowest fare Routavio has observed is €82, found on 22 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Detroit to Seattle?
Cheapest month from Detroit to Seattle: November 2026, from €82 (checked 22 Oct 2026).
Are there direct flights from Detroit to Seattle?
Yes. Published schedules report non-stop flights on this route with Delta Air Lines.
Which airlines fly from Detroit to Seattle?
Routavio has seen these carriers on the route: Delta Air Lines, Alaska Airlines, American Airlines, Frontier Airlines, Southwest Airlines, Sun Country Airlines, United Airlines (7).
How long does the flight from Detroit to Seattle take?
Across the 92 fares Routavio observed, the average journey time is 17h 06m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Detroit to Seattle fares were non-stop?
13 of the 92 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which airlines had non-stop offers on at least 3 departure dates from Detroit to Seattle?
For Detroit to Seattle, examples of observed one-way non-stop offers checked within the last 14 days: Alaska Airlines (13). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Detroit to Seattle?
Cheapest day of the week from Detroit to Seattle: Tuesday, from €82 (checked 22 Oct 2026).
Which airline has the lowest fare from Detroit to Seattle?
Cheapest airline from Detroit to Seattle: Frontier Airlines, from €82 (checked 22 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
Keep exploring
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Recently observed fares. Prices may change.
Last checked: 29 Oct 2026