Cheap flights from Illinois to Great Falls from $124
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 Great Falls departing on 6/4. 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 Great 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 day to depart on your flight to Great Falls?
The cheapest day to depart on your flight to Great Falls is on a Friday when prices can be found for as low as $397. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $724.
What is the cheapest time of day to depart on your flight to Great Falls?
According to our data, the cheapest time of day to fly to Great Falls is in the afternoon. momondo users have found flights departing from Illinois to Great Falls in the afternoon for as low as $398. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $724 on average. Flights to Great Falls from Illinois in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Illinois to Great Falls flight route?
Fly from Chicago O'Hare Intl to Great Falls for the best Illinois - Great Falls flight prices
What cabin class options are available on Illinois to Great Falls flights?
There are 2 cabin classes available to choose from on Illinois to Great Falls flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Cheap Illinois to Great Falls flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Great Falls
When did momondo last update prices for flights from Illinois to Great Falls Airport?
Prices for flights from Illinois to Great Falls Airport are updated daily.
How many operators does momondo search for flights from Illinois to Great Falls Airport?
The number of operators available for flights from Illinois to Great Falls Airport is 3 as of May 2025.
How old do you have to be to fly from Illinois to Great Falls Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Great Falls Airport.
What documentation or ID do you need to fly to Great Falls Airport?
The required travel and health documents for your Great Falls Airport 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 Great Falls Airport. 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 Illinois to Great Falls?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Great Falls is Embraer 175 (Enhanced Winglets) (63.64% of total bookings). The next most popular plane model is Embraer 170 (36.36%).
Best airlines flying from Illinois to Great Falls
Compare and see reviews for airlines that fly from Illinois to Great Falls with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $225 | Free Cancellation | Rating 8.0 9,994 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.4 8,710 reviews |
Traveling to a place near Great Falls?
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Why should I use momondo to find a flight deal from Illinois to Great Falls?
It is quick and easy to find Illinois to Great Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Great Falls that suits you.
Can I find flights from Illinois to Great Falls with flexible booking policies on momondo?
Flights from Illinois to Great Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Illinois to Great Falls?
momondo helps you find the best flight between Illinois and Great Falls 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 Great Falls right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Great Falls, momondo offers a useful price alert feature which will track prices for flights to Great Falls from Illinois and alert you when they change.