Cheapest return flights from Boise to Seattle in August from $209

AirHint found the following cheapest return flights from Boise (BOI) to Seattle (SEA) in August 2026 (see full year).

Return flights

29 Aug - 01 Sep Alaska Airlines direct
31 Aug - 31 Aug Alaska Airlines
13 Aug - 20 Aug Delta direct
14 Aug - 21 Aug Delta direct
16 Aug - 23 Aug Delta direct
17 Aug - 24 Aug Delta direct
19 Aug - 26 Aug Delta direct
31 Aug - 31 Aug Alaska Airlines direct

Also check the deals for one-way flights from Boise to Seattle in August.

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