Cheap flights from Knoxville, TN to Sioux Falls, SD
Flights starting at $90. Choose between Allegiant Air, Frontier Airlines, or United Airlines to find the best price.
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The most popular airlines for this route are Allegiant Air, Frontier Airlines, United Airlines, Spirit Airlines, and WestJet. Knoxville and Sioux Falls have 63 direct flights per week.
Check-in for a flight from Knoxville to Sioux Falls
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
WestJet | WJA | WS | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in Sioux Falls
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | -4°C | -12°C |
February | -1°C | -11°C |
March | 6°C | -2°C |
April | 13°C | 2°C |
May | 19°C | 9°C |
June | 26°C | 15°C |
July | 28°C | 17°C |
August | 27°C | 16°C |
September | 24°C | 12°C |
October | 14°C | 5°C |
November | 7°C | -1°C |
December | -1°C | -8°C |
14 day forecast
Frequently asked questions
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