Cheap flights from Idaho to Illinois from $95
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Illinois departing on 7/18. 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 Idaho to Illinois
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 Illinois?
The cheapest month to fly to Illinois from Idaho is in January. Flight prices, which tend to average around $320, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $323.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Idaho to Illinois is on a Saturday when prices can be found for as low as $614. Flights from Idaho to Illinois on a Sunday will generally be more expensive and average around $953. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Idaho to Illinois during this time can be as low as $306. Flights in the morning are often more expensive with an average ticket price of $776.
What is the cheapest Idaho to Illinois flight route?
Fly from Boise Air Term. Gowen Fld to Chicago Midway for the best Idaho - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Idaho when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $399 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Idaho for as low as $251 on momondo.
What cabin class options are available on Idaho to Illinois flights?
There are 4 cabin classes available to choose from on Idaho to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Idaho to Illinois?
Spirit Airlines, Frontier, and Hawaiian Airlines are the most popular carriers operating from Idaho to Illinois
What airlines fly to Illinois?
United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Illinois from Idaho according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from Idaho to Illinois on average per day?
The number of flights available between Idaho and Illinois is 25 per day as of June 2025. The most frequent departure time is 12:00PM, with 67% of daily flights leaving in the afternoon.
How many flights depart from Idaho to Illinois on average per week?
179 flights are operational weekly from Idaho to Illinois as of June 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.
Cheap Idaho to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Idaho to Illinois
When did momondo last update prices for flights from Idaho to Illinois?
Prices for flights from Idaho to Illinois refresh daily.
How many operators does momondo search for flights from Idaho to Illinois?
The number of operators available for flights from Idaho to Illinois is 5 as of June 2025.
How old do you have to be to fly from Idaho to Illinois?
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 Idaho to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Idaho to Illinois?
Based on momondo bookings for flights between Idaho and Illinois, the leading plane model is Embraer 175 (Enhanced Winglets), making up 31.39% of the total bookings. Other popular models include Embraer 175 with 21.86%, Airbus A319 with 18.40%, and Airbus A320-100/200 with 8.01%.
Best airlines flying from Idaho to Illinois
Compare and see reviews for airlines that fly from Idaho to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $139 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $217 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $228 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 8.0 4,278 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Idaho to Illinois?
Finding the right flight to Illinois from Idaho 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 Illinois quick and easy, saving you time and money.
Can I find flights from Idaho to Illinois with flexible booking policies on momondo?
momondo does allow users to show only those flights to Illinois from Idaho which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Idaho to Illinois?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Idaho.
I’m not ready to book a flight from Idaho to Illinois right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Idaho and alert you when they change.