Cheap flights from Chicago to Boise from $112

The month of May is, on average, the cheapest month to fly to Boise from Chicago, with most prices found around $87. If you aren’t able to travel during the month of May, then book flights to Boise from Chicago during July instead. Flights to Boise in July, while not as cheap as those in May, still average around $91.

Our data shows that Wednesday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $363. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $520. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

Our data shows that the cheapest Chicago to Boise flights are usually those with departure times at noon. Our users have found flights to Boise at noon for as low as $355. In the evening is when there is more demand to fly to Boise, so prices are often more expensive at around $452 per ticket.

Fly from Chicago O'Hare Intl to Boise Air Term. Gowen Fld for the best Chicago - Boise Air Term. Gowen Fld flight prices

You are more likely to see cheaper flights to Boise from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $429 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from Chicago for as low as $284 on momondo.

No. A direct flight is the cheapest option for a flight between Chicago to Boise.

As of May 2026, prices for Chicago to Boise flights are approximately 30% cheaper when compared to flights at the same time last year.

Delta and United Airlines are the most popular carriers operating from Chicago to Boise Air Term. Gowen Fld

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Boise from Chicago according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Boise. Keep in mind that there are 4 different airlines that fly to Boise on a routine basis, so you have a few additional options to choose from.

As of May 2026, there are 6 flights per day flying from Chicago to Boise. The most common time of day flights depart is 7:00PM, with 45% of flights taking off at noon.

As of May 2026, 48 flights take off from Chicago and land in Boise each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.