Cheap flights from Illinois to Montana from $97
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 Montana departing on 8/9. 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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American Airlines flights from Illinois to Montana
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Southwest flights from Illinois to Montana
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How to get the cheapest flight ticket from Illinois to Montana
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 Montana?
The cheapest month to fly to Montana from Illinois is in April. Flight prices, which tend to average around $369, are often lower during this time because this is during the off-season. The month of June is another great option to travel to Montana, with average flight prices from Illinois averaging around $391.
What is the cheapest day to depart on your flight to Montana?
Our data shows that Tuesday is the least expensive day to fly to Montana. Tickets to fly out on this day can be as low as $424. The most expensive day to fly to Montana is Sunday, with ticket prices averaging around $463.
What is the cheapest time of day to depart on your flight to Montana?
The cheapest time of day to fly to Montana is at noon when flights can be purchased for as low as $289. In the afternoon is when there is more demand to fly to Montana, so prices are often more expensive at around $541 per ticket.
What is the cheapest Illinois to Montana flight route?
Fly from Chicago O'Hare Intl to Bozeman Gallatin Field for the best Illinois - Montana flight prices
How far in advance should I book a flight to Montana?
You are more likely to see cheaper flights to Montana from Illinois when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to Montana for around $446 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montana from Illinois for as low as $356 on momondo.
What cabin class options are available on Illinois to Montana flights?
There are 4 cabin classes available to choose from on Illinois to Montana 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 Illinois to Montana?
Alaska Airlines, United Airlines, and Southwest are the most popular carriers operating from Illinois to Montana
What airlines fly to Montana?
American Airlines, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Montana from Illinois according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Montana. Keep in mind that there are 5 different airlines that fly to Montana on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to Montana on average per day?
As of June 2025, 22 flights take off from Illinois and land in Montana each day. The most common flight departure time for this route is 9:00AM, with 61% of daily flights taking off at noon.
How many flights depart from Illinois to Montana on average per week?
As of June 2025, there are 159 flights per week flying from Illinois to Montana. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.
Cheap Illinois to Montana flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Montana
When did momondo last update prices for flights from Illinois to Montana?
Prices for flights from Illinois to Montana were last updated today.
How many operators does momondo search for flights from Illinois to Montana?
As of June 2025, there are 5 operators available to choose from for flights from Illinois to Montana.
How old do you have to be to fly from Illinois to Montana?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Montana.
What documentation or ID do you need to fly to Montana?
The travel and health documents you'll need for your trip to Montana may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Montana. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to Montana?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Montana is Boeing 737-800, representing 34.56% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 15.48%, Airbus A319 at 12.42%, and Boeing 737 MAX 8 at 9.93%.
Best airlines flying from Illinois to Montana
Compare and see reviews for airlines that fly from Illinois to Montana with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $224 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $225 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 8.0 7,965 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.4 8,809 reviews | |||
| PriceFrom $296 | Free Cancellation | Rating 8.0 4,280 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Montana?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Montana for you.
Can I find flights from Illinois to Montana with flexible booking policies on momondo?
momondo does allow users to show only those flights to Montana from Illinois which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Illinois to Montana?
momondo helps you find the best flight between Illinois and Montana by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Illinois to Montana right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Illinois to Montana now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Montana and let you know when they change.