Cheapest return PDX–IDA flights, July

AirHint found the following cheapest return flights from Portland (PDX) to Idaho Falls (IDA) in July 2026 (see full year).

Return flights

10 Jul - 20 Jul Allegiant Air direct
31 Jul - 03 Aug Allegiant Air direct
24 Jul - 03 Aug Allegiant Air direct
24 Jul - 27 Jul Allegiant Air direct
10 Jul - 27 Jul Allegiant Air direct
07 Jul - 09 Jul Alaska Airlines direct

Also check the deals for one-way flights from Portland to Idaho Falls in July.

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