AirHint found the following cheapest one-way flights from Boise (BOI) to Seattle (SEA) in March 2026 (see full year).
One-Way flights
| 10 Mar | Alaska Airlines | direct | |
| 16 Mar | Delta | direct | |
| 25 Mar | Alaska Airlines | direct | |
| 05 Mar | Frontier Airlines | ||
| 05 Mar | Alaska Airlines | direct | |
| 13 Mar | Hawaiian Airlines | direct | |
| 14 Mar | Hawaiian Airlines | direct |
Also check the deals for return flights from Boise to Seattle in March.
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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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