£118 Cheap Flights from Chicago (ORD) to Great Falls (GTF)

View £118 flight on Sat, 26 Sept 2026Opens in a new window

Popular airlines from Chicago O'Hare International Airport (ORD) to Great Falls, MT (GTF-Great Falls Intl.)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Chicago (ORD) to Great Falls (GTF)

Prices were available within the past 7 days and start at £118 for one-way flights and £525 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
GTF
Great Falls
£525 Return, found 12 hours ago
£525
Return
found 12 hours ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Chicago to Great Falls, returning Fri, 19 Jun, priced at £525 found 12 hours ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
GTF
Great Falls
£526 Return, found 12 hours ago
£526
Return
found 12 hours ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Chicago to Great Falls, returning Fri, 19 Jun, priced at £526 found 12 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
ORD
Chicago
GTF
Great Falls
£550 Return, found 12 hours ago
£550
Return
found 12 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Chicago to Great Falls, returning Wed, 24 Jun, priced at £550 found 12 hours ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
GTF
Great Falls
£562 Return, found 12 hours ago
£562
Return
found 12 hours ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Chicago to Great Falls, returning Fri, 19 Jun, priced at £562 found 12 hours ago
Alaska Airlines
Sat, 13 Jun - Sat, 20 Jun
ORD
Chicago
GTF
Great Falls
£565 Return, found 12 hours ago
£565
Return
found 12 hours ago
Select Alaska Airlines flight, departing Sat, 13 Jun from Chicago to Great Falls, returning Sat, 20 Jun, priced at £565 found 12 hours ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
GTF
Great Falls
£565 Return, found 12 hours ago
£565
Return
found 12 hours ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Chicago to Great Falls, returning Fri, 19 Jun, priced at £565 found 12 hours ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
ORD
Chicago
GTF
Great Falls
£578 Return, found 12 hours ago
£578
Return
found 12 hours ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Chicago to Great Falls, returning Thu, 18 Jun, priced at £578 found 12 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
ORD
Chicago
GTF
Great Falls
£581 Return, found 12 hours ago
£581
Return
found 12 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Chicago to Great Falls, returning Wed, 24 Jun, priced at £581 found 12 hours ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
ORD
Chicago
GTF
Great Falls
£582 Return, found 12 hours ago
£582
Return
found 12 hours ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Chicago to Great Falls, returning Thu, 18 Jun, priced at £582 found 12 hours ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
GTF
Great Falls
£585 Return, found 12 hours ago
£585
Return
found 12 hours ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Chicago to Great Falls, returning Fri, 19 Jun, priced at £585 found 12 hours ago

Frequently asked questions

What is the cheapest month to fly from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
November is typically the cheapest month to fly from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.), with average return fares of approximately £409. This is about 33% lower than the average price throughout the year. November often sees lower prices as it's outside peak holiday travel periods, leading to less demand. April and October are also good months to find deals on this route.
Which airlines fly direct from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
Enter ORD to GTF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
To find a cheap flight from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
When planning your trip from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.), you'll find the cheapest months to fly are typically November and October, with average return flights around £409. However, the most popular months for this route are June and July, which means there are usually more flight options available then. Since there isn't an overlap between the cheapest and most popular months, you can choose based on your priorities: save money by traveling in the autumn, or enjoy more flexibility with flight times during the summer, understanding that prices might be a bit higher. This information is based on booking data from the past year.
How many flights per day from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
There are approximately 44 connecting flights per day from Chicago O'Hare International Airport (ORD) to Great Falls International Airport (GTF). Some common connection points include Portland International Airport (PDX), San Diego International Airport (SAN), and Denver International Airport (DEN).
What is the earliest flight from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
The earliest flight from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) typically departs at approximately 5:00 AM local time. This flight is operated by United Airlines and is a seasonal service active in September. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
You'll typically find the most flights from Chicago O'Hare International Airport (ORD) to Great Falls International Airport (GTF) on a Sunday, with around 24 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and Alaska Airlines. Looking at the overall week, Sundays offer notably more flight options compared to other days, making it a good day to consider for your journey.
What are the most popular departure times for flights from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
The most popular departure times for flights from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) are in the early morning, from 6am to 9am. About 59% of passengers prefer this time. Many major carriers, including Delta and United, offer flights during this window. This timing works well because it allows you to get an early start on your journey and arrive at your destination with plenty of time left in the day.
How long does it take to fly from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
Direct flights from ORD to GTF usually take about 3 hours 50 minutes, traveling roughly 1,207 miles. If you opt for a connecting flight, expect to add around 2 hours 10 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
Select the "Business class" and "First class" filters when looking for ORD to GTF flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) flight with Expedia?
It's easy to earn miles on a Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Great Falls from O'Hare Intl. (ORD)?
From O'Hare Intl. (ORD), you can fly directly into Great Falls Intl. (GTF) to reach Great Falls. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Minneapolis - St. Paul Intl. (MSP), Detroit Metropolitan Wayne County (DTW) before reaching Great Falls. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) at the last minute?
Typically, booking a last minute flight from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) flight and hotel package?
Securing a Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.)?
If you booked your Chicago, IL (ORD-O'Hare Intl.) to Great Falls, MT (GTF-Great Falls Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines
Return price
£524
Distance
1930 km

Book with confidence

Compare flights from Chicago to Great Falls easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chicago to Great Falls. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Great Falls Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from O'Hare Intl. to Great Falls Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from O'Hare Intl. (ORD) to Great Falls Intl. (GTF)

The easiest way to view the best deals on flights from Chicago to Great Falls today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from O'Hare Intl. to Great Falls Intl. start at just £525 and range up to £585.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Chicago and Great Falls
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Chicago to Great Falls flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from O'Hare Intl. to Great Falls Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Chicago to Great Falls easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.