Alaska Airlines Flights from Portland to Idaho Falls
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1 Passenger
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Lowest fares from Portland to Idaho Falls
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One-way low-fare flights Portland to Idaho Falls.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Portland (PDX) | Idaho Falls (IDA) | One-way | Saver | Depart: Jan 28, 2026 | From $138 Seen: 1 day ago | |
| Portland (PDX) | Idaho Falls (IDA) | One-way | Saver | Depart: Jan 7, 2026 | From $138 Seen: 4 hours ago | |
| Portland (PDX) | Idaho Falls (IDA) | One-way | Saver | Depart: May 17, 2026 | From $189 Seen: 24 minutes 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.