To save up to 20% on this flight, we recommend booking at least 17 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Idaho Falls to California from $75 1-2 weeks out and tickets from $95 for flights departing within the next 72 hours.
Flights from Idaho Falls to California lean towards being more expensive in December. Prices are generally better when you fly from Idaho Falls to California in April, with the cheapest ticket starting at $43.
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