Cheapest return flights from Boise to Seattle in May from $97

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

Return flights

13 May - 17 May Delta direct
24 May - 01 Jun Alaska Airlines direct
26 May - 02 Jun Alaska Airlines direct

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

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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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