It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
To save up to 48% on this flight, we recommend booking at least 20 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 Chicago from $213 1-2 weeks out and tickets from $293 for flights departing within the next 72 hours.
The best pricing can be found in the month of August. Prices to Chicago from Idaho Falls average $182. You can even find prices in August for less than $182, as users have found deals to Chicago from as low as $64. The month of December appears to be one of the more expensive times to travel to Chicago from Idaho Falls. Flying in the targeted month can save you up to 34%.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 28% on flights from Idaho Falls to Chicago by exploring options for tickets at noon.