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Get United's best fares today on flights from Boise to Washington

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Low fare calendar for flights from Boise (BOI) to Washington (IAD)

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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 Washington

Monday overcast clouds
77°F 05/25/20
Tuesday broken clouds
74°F 05/26/20
Wednesday light rain
79°F 05/27/20
Thursday heavy intensity rain
69°F 05/28/20
Friday heavy intensity rain
79°F 05/29/20
Saturday moderate rain
65°F 05/30/20
Sunday sky is clear
72°F 05/31/20
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