Seattle to Sioux Falls flights

Routavio compares airline fares from several flight booking sites. Search Seattle to Sioux Falls to see the lowest price before you book.

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Lowest fare seen

€138Seen on 12 Oct 2026

Last checked

25 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €138

Lowest observed

4 Dec 2026

Frontier Airlines · 1 stop · One way

Cheapest observed day · Last checked: 12 Oct 2026

Departure

21:53

When to fly

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One-way fare

One-way fare · No data: click and we will search

Airlines seen: Alaska Airlines, Allegiant Air, Frontier Airlines, United Airlines
Typical journey time: 8h 58m

Short answer

Routavio has seen Alaska Airlines fares from Seattle to Sioux Falls. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare. Lowest fare seen: €138 on 12 Oct 2026.

About this route

Explore the fares we observed from Seattle to Sioux Falls. Prices move often, so pick your dates to see the latest options.

Route distance: 2,033 km
Typical journey time: 8h 58m
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

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

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.
Sioux Falls Regional Airport (FSD) → Sioux Falls, city gazetteer reference point (43.5473, -96.7283): ≈ 4 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.

Frequently asked

How much was a flight from Seattle to Sioux Falls?

A fare of €138 was seen on 12 Oct 2026. Fares change, so search your dates for the current price.

Are there direct flights from Seattle to Sioux Falls?

Our data holds no non-stop flight from Seattle to Sioux Falls. The fares on this page include at least one stop.

Which airlines fly from Seattle to Sioux Falls?

Routavio has seen these carriers on the route: Alaska Airlines, Allegiant Air, Frontier Airlines, United Airlines.

How long does the flight from Seattle to Sioux Falls take?

Across the 87 fares Routavio observed, the average journey time is 14h 13m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Seattle to Sioux Falls fares were non-stop?

None of the 87 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide