Your next trip, last seen at €92
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
- €92, departing 21 Jan 2027 (Last checked: 17 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- United Airlines, Allegiant Air, American Airlines, Delta Air Lines, Frontier Airlines
- Reported fastest flight
- 1h 26m
- Non-stop
- Yes
About this route
Explore the fares we observed from Denver to Sioux Falls. Prices move often, so pick your dates to see the latest options.
- Route distance
- 806 km
- Reported fastest flight
- 1h 26m
- Alternative airports
- APA
Route-level information; individual journeys vary.
Published schedules report non-stop service with United Airlines. 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 |
|---|---|---|
| United Airlines | 39 / 196 |
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
- Denver International Airport (DEN) → Denver, city gazetteer reference point (39.7392, -104.9847): ≈ 30 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.
Lowest one-way fare we saw per airline
Cheapest airline from Denver to Sioux Falls: Frontier Airlines, from €92 (checked 17 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €92Jan 21, 2027 | 53 |
| Allegiant Air | €124Jan 20, 2027 | 7 |
| United Airlines | €249Jan 10, 2027 | 44 |
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 Denver to Sioux Falls?
The lowest fare Routavio has observed is €92, found on 17 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Denver to Sioux Falls?
In our observations January 2027 is the cheapest month so far, at €92.
Are there direct flights from Denver to Sioux Falls?
Yes. Published schedules report non-stop flights on this route with United Airlines.
Which airlines fly from Denver to Sioux Falls?
Routavio has seen these carriers on the route: United Airlines, Allegiant Air, American Airlines, Delta Air Lines, Frontier Airlines.
How long does the flight from Denver to Sioux Falls take?
Across the 108 fares Routavio observed, the average journey time is 10h, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Denver to Sioux Falls fares were non-stop?
43 of the 110 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 Denver to Sioux Falls?
For Denver to Sioux Falls, examples of observed one-way non-stop offers checked within the last 14 days: United Airlines (39). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which airline has the lowest fare from Denver to Sioux Falls?
Cheapest airline from Denver to Sioux Falls: Frontier Airlines, from €92 (checked 17 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: 25 Oct 2026