Cheapest return flights from Portland (PDX) to Idaho Falls (IDA), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
03 Aug 07 Aug Allegiant Air
Direct Flight
17 Aug 24 Aug Allegiant Air
Direct Flight
14 Aug 21 Aug Allegiant Air
Direct Flight
19 Aug 26 Aug Alaska Airlines
Direct Flight
03 Aug 06 Aug Allegiant Air
04 Aug 07 Aug Alaska Airlines
Direct Flight
01 Aug 03 Aug Alaska Airlines
Direct Flight
13 Aug 20 Aug Alaska Airlines
Direct Flight
16 Aug 23 Aug Alaska Airlines
Direct Flight
19 Aug 24 Aug Delta
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deals for one-way flights from Portland to Idaho Falls in August.

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Updated Jul 4, 2026.

About these fares

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