Allegiant AirDepart11:40
Fri, Nov 13FSD → RAP
5h 07m · 1 stop
$311one way, per person
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- Cheapest fare
- $311
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 3h 26m
Allegiant Air · Fri, Nov 13
from $311
Usually 1+ stop
520 km
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Cheapest month to fly from Sioux Falls to Rapid City
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Allegiant Air
United AirlinesDepart09:32
Sun, Nov 8FSD → RAP
3h 26m · 1 stop
$385one way, per person
View deal
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About flights from Sioux Falls to Rapid City
Sioux Falls (FSD) and Rapid City (RAP) are about 520 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 26m. Over the next few months, one-way fares start from $311, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Sioux Falls to Rapid City?
The cheapest one-way fare we've seen recently is $311 with Allegiant Air, departing Friday, November 13, 2026.
What is the cheapest month to fly from Sioux Falls to Rapid City?
November 2026 currently has the lowest fares, from $311 one way.
Are there direct flights from Sioux Falls to Rapid City?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Sioux Falls to Rapid City?
The quickest journey we've seen takes about 3h 26m. Sioux Falls and Rapid City are around 520 km apart.
Which airlines fly from Sioux Falls to Rapid City?
Recent fares on this route were with Allegiant Air and United Airlines.
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