Cheapest return flights from Boise to Seattle in January from $56

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

Return flights

14 Jan - 01 Feb Alaska Airlines direct
22 Jan - 26 Jan Hawaiian Airlines direct
17 Jan - 19 Jan Alaska Airlines direct
22 Jan - 29 Jan Alaska Airlines direct
15 Jan - 17 Jan Alaska Airlines direct
09 Jan - 12 Jan Delta direct
26 Jan - 30 Jan Alaska Airlines direct
11 Jan - 14 Jan Alaska Airlines direct

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

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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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