Cheap flights from Chicago O'Hare Intl Airport to Idaho from $95

In general, April is the cheapest month to fly from Chicago O'Hare Intl Airport to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $329. If you don’t want to visit Idaho in April, then you should wait until November to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $364.

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $362. On the other hand, Sunday is the most expensive day to depart from Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $637.

According to our data, the cheapest time of day to fly to Idaho is in the morning. momondo users have found flights departing from Chicago O'Hare Intl Airport to Idaho in the morning for as low as $395. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $570 per ticket.

Fly from Chicago O'Hare Intl to Idaho Falls Fanning Field for the best Chicago O'Hare Intl - Idaho flight prices

You are more likely to see cheaper flights to Idaho from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $451 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Chicago O'Hare Intl Airport for as low as $320 on momondo.

There are 4 cabin classes available to choose from on Chicago O'Hare Intl Airport to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Chicago O'Hare Intl to Idaho

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Idaho from Chicago O'Hare Intl Airport according to our data. American Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

15 flights are operational daily from Chicago O'Hare Intl Airport to Idaho as of August 2026. The most popular departure time for this route is 7:00PM, with 48% of flights per day taking off in the evening.

As of August 2026, 105 flights take off from Chicago O'Hare Intl Airport and land in Idaho each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.