Alaska Airlines Flights from Idaho Falls to Seattle
One-way low-fare flights Idaho Falls to Seattle.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Jun 6, 2026 | From $139 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Jun 9, 2026 | From $139 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Aug 12, 2026 | From $184 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Aug 13, 2026 | From $184 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Aug 14, 2026 | From $184 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Aug 17, 2026 | From $184 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Aug 19, 2026 | From $184 Seen: 19 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Aug 20, 2026 | From $184 Seen: 19 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.