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Get United's best fares today on flights from Washington to Sioux Falls from *

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Low fare calendar for flights from Washington (IAD) to Sioux Falls (FSD)

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*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

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Weather in Sioux Falls

Friday sky is clear
19°F 12/06/19
Saturday scattered clouds
33°F 12/07/19
Sunday overcast clouds
32°F 12/08/19
Monday snow
9°F 12/09/19
Tuesday overcast clouds
3°F 12/10/19
Wednesday light snow
10°F 12/11/19
Thursday snow
2°F 12/12/19
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