Your next trip, last seen at €121
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
- €121, departing 3 Dec 2026 (Last checked: 16 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Alaska Airlines, Allegiant Air, Frontier Airlines, United Airlines
- Typical journey time
- 21h 19m
About this route
Explore the fares we observed from Seattle to Des Moines. Prices move often, so pick your dates to see the latest options.
- Route distance
- 2,354 km
- Typical journey time
- 21h 19m
- Seen on fares with a connection
- Frontier Airlines, United Airlines, Alaska Airlines, Allegiant Air
- Alternative airports
- BFI
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
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.
- Des Moines International Airport (DSM) → Des Moines, city gazetteer reference point (41.5868, -93.6250): ≈ 6 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 Des Moines: Frontier Airlines, from €121 (checked 16 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €121Dec 3, 2026 | 45 |
| Allegiant Air | €159Dec 23, 2026 | 6 |
| United Airlines | €207Jan 1, 2027 | 19 |
| Alaska Airlines | €314Dec 6, 2026 | 9 |
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 Des Moines?
The lowest fare Routavio has observed is €121, 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 Des Moines?
In our observations December 2026 is the cheapest month so far, at €121.
Are there direct flights from Seattle to Des Moines?
Our data holds no non-stop flight from Seattle to Des Moines. The fares on this page include at least one stop.
Which airlines fly from Seattle to Des Moines?
Routavio has seen these carriers on the route: Alaska Airlines, Allegiant Air, Frontier Airlines, United Airlines.
How long does the flight from Seattle to Des Moines take?
Across the 86 fares Routavio observed, the average journey time is 20h 01m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Seattle to Des Moines fares were non-stop?
None of the 86 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Seattle to Des Moines?
Cheapest airline from Seattle to Des Moines: Frontier Airlines, from €121 (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