Your next trip, last seen at €113
Lowest observedFrontier Airlines · 2 stops · 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
- €113, departing 17 Nov 2026 (Last checked: 16 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Alaska Airlines, Frontier Airlines, United Airlines
- Reported fastest flight
- 4h 16m
- Non-stop
- Yes
About this route
Explore the fares we observed from Seattle to Detroit. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,111 km
- Reported fastest flight
- 4h 16m
- Alternative airports
- BFI, DET, YIP
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 | 17 / 80 |
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
- 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.
- Detroit Metropolitan Wayne County Airport (DTW) → Detroit, city gazetteer reference point (42.3314, -83.0458): ≈ 29 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 one-way fare we saw per airline
Cheapest airline from Seattle to Detroit: Frontier Airlines, from €113 (checked 16 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €113Nov 17, 2026 | 62 |
| Alaska Airlines | €192Dec 15, 2026 | 17 |
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 Seattle to Detroit?
The lowest fare Routavio has observed is €113, found on 16 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Seattle to Detroit?
In our observations November 2026 is the cheapest month so far, at €113.
Are there direct flights from Seattle to Detroit?
Yes. Published schedules report non-stop flights on this route with Delta Air Lines.
Which airlines fly from Seattle to Detroit?
Routavio has seen these carriers on the route: Alaska Airlines, Frontier Airlines, United Airlines.
How long does the flight from Seattle to Detroit take?
Across the 86 fares Routavio observed, the average journey time is 17h 44m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Seattle to Detroit fares were non-stop?
17 of the 86 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 Seattle to Detroit?
For Seattle to Detroit, examples of observed one-way non-stop offers checked within the last 14 days: Alaska Airlines (17). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which airline has the lowest fare from Seattle to Detroit?
Cheapest airline from Seattle to Detroit: Frontier Airlines, from €113 (checked 16 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 23 Oct 2026