Book Cheap Flights from Idaho Falls with Alaska Airlines
Find round-trip flight deals from Idaho Falls.*
Idaho Falls (IDA)to
Seattle (SEA)
Idaho Falls (IDA)to
Portland (PDX)
Idaho Falls (IDA)to
Boise (BOI)*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.
One-way flight deals from Idaho Falls.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: May 13, 2026 | From $89 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: May 19, 2026 | From $89 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: May 16, 2026 | From $89 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: May 20, 2026 | From $89 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Apr 15, 2026 | From $99 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Seattle (SEA) | One-way | Saver | Depart: Apr 21, 2026 | From $99 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Boise (BOI) | One-way | Saver | Depart: May 16, 2026 | From $137 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Portland (PDX) | One-way | Saver | Depart: Jul 14, 2026 | From $149 Seen: 7 hours ago | |
| Idaho Falls (IDA) | Portland (PDX) | One-way | Saver | Depart: May 24, 2026 | From $149 Seen: 3 hours ago | |
| Idaho Falls (IDA) | Boise (BOI) | One-way | Saver | Depart: May 13, 2026 | From $177 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Boise (BOI) | One-way | Saver | Depart: May 19, 2026 | From $177 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Anchorage (ANC) | One-way | Saver | Depart: Mar 3, 2026 | From $181 Seen: 11 hours ago | |
| Idaho Falls (IDA) | Boise (BOI) | One-way | Saver | Depart: May 20, 2026 | From $202 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Boise (BOI) | One-way | Saver | Depart: May 25, 2026 | From $224 Seen: 17 hours ago | |
| Idaho Falls (IDA) | Boise (BOI) | One-way | Saver | Depart: May 26, 2026 | From $224 Seen: 17 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.