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Get United's best fares today on flights from Seattle to Williston

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Low fare calendar for flights from Seattle (SEA) to Williston (ISN)

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Lowest PriceToday
*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 Williston

Monday sky is clear
17°F 01/20/20
Tuesday overcast clouds
27°F 01/21/20
Wednesday overcast clouds
30°F 01/22/20
Thursday overcast clouds
17°F 01/23/20
Friday scattered clouds
22°F 01/24/20
Saturday broken clouds
32°F 01/25/20
Sunday sky is clear
26°F 01/26/20
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