Cheap flights from Illinois to Idaho Falls from $139
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Idaho Falls departing on 5/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Illinois to Idaho Falls
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Idaho Falls?
If you aren’t able to travel to Idaho Falls during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $299.
What is the cheapest day to depart on your flight to Idaho Falls?
Our data shows that Sunday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $385. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Thursday is $673.
What is the cheapest airline that flies from Illinois to Idaho Falls Fanning Field?
Delta, Alaska Airlines, and American Airlines are the most popular carriers operating from Illinois to Idaho Falls Fanning Field
What airlines fly to Idaho Falls?
United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Idaho Falls from Illinois according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.
Cheap Illinois to Idaho Falls flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Idaho Falls
When did momondo last update prices for flights from Illinois to Idaho Falls Fanning Field Airport?
Prices for flights from Illinois to Idaho Falls Fanning Field Airport were last updated today.
How many operators does momondo search for flights from Illinois to Idaho Falls Fanning Field Airport?
As of April 2025, there are 3 operators available to choose from for flights from Illinois to Idaho Falls Fanning Field Airport.
How old do you have to be to fly from Illinois to Idaho Falls Fanning Field Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Idaho Falls Fanning Field Airport.
What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?
The travel and health documents required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Illinois to Idaho Falls
Compare and see reviews for airlines that fly from Illinois to Idaho Falls with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $363 | Free Cancellation | Rating 7.4 8,684 reviews |
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Illinois to Idaho Falls?
Finding the right flight to Idaho Falls from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.
Can I find flights from Illinois to Idaho Falls with flexible booking policies on momondo?
Yes. All flights to Idaho Falls from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Illinois to Idaho Falls?
momondo provides multiple filters to help you find the best flight to Idaho Falls from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Illinois to Idaho Falls right now. Can momondo alert me if prices change?
Price alerts on flights to Idaho Falls from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.