Cheapest one-way flights from Boise to Seattle in August from $53

AirHint found the following cheapest one-way flights from Boise (BOI) to Seattle (SEA) in August 2025 (see full year).

One-Way flights

19 Aug Alaska Airlines direct
11 Aug Southwest Airlines
25 Aug Alaska Airlines direct
24 Aug Alaska Airlines direct
15 Aug Alaska Airlines direct
11 Aug Alaska Airlines direct
10 Aug Delta direct
05 Aug Delta direct

Also check the deals for return flights from Boise to Seattle in August.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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