$127 Cheap Flights from Chicago (ORD) to Great Falls (GTF)

View $127 flight on Tue, Mar 3, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $127 for one-way flights and $254 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Dec 9 - Wed, Dec 24
ORD
Chicago
GTF
Great Falls
$254 Roundtrip, found 21 hours ago
$254
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Chicago to Great Falls, returning Wed, Dec 24, priced at $254 found 21 hours ago
Delta
Tue, Jan 13 - Tue, Jan 27
ORD
Chicago
GTF
Great Falls
$254 Roundtrip, found 21 hours ago
$254
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Jan 13 from Chicago to Great Falls, returning Tue, Jan 27, priced at $254 found 21 hours ago
Delta
Tue, Jan 27 - Tue, Feb 10
ORD
Chicago
GTF
Great Falls
$260 Roundtrip, found 21 hours ago
$260
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Jan 27 from Chicago to Great Falls, returning Tue, Feb 10, priced at $260 found 21 hours ago
Alaska Airlines
Tue, Dec 9 - Thu, Dec 25
ORD
Chicago
GTF
Great Falls
$264 Roundtrip, found 21 hours ago
$264
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Chicago to Great Falls, returning Thu, Dec 25, priced at $264 found 21 hours ago
Delta
Fri, Jan 30 - Wed, Feb 11
ORD
Chicago
GTF
Great Falls
$266 Roundtrip, found 21 hours ago
$266
Roundtrip
found 21 hours ago
Select Delta flight, departing Fri, Jan 30 from Chicago to Great Falls, returning Wed, Feb 11, priced at $266 found 21 hours ago
Delta
Sat, Jan 10 - Tue, Jan 13
ORD
Chicago
GTF
Great Falls
$269 Roundtrip, found 3 days ago
$269
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Jan 10 from Chicago to Great Falls, returning Tue, Jan 13, priced at $269 found 3 days ago
Delta
Mon, Jan 12 - Tue, Jan 27
ORD
Chicago
GTF
Great Falls
$270 Roundtrip, found 21 hours ago
$270
Roundtrip
found 21 hours ago
Select Delta flight, departing Mon, Jan 12 from Chicago to Great Falls, returning Tue, Jan 27, priced at $270 found 21 hours ago
Delta
Tue, Nov 18 - Wed, Dec 3
ORD
Chicago
GTF
Great Falls
$271 Roundtrip, found 4 days ago
$271
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Nov 18 from Chicago to Great Falls, returning Wed, Dec 3, priced at $271 found 4 days ago
Hawaiian Airlines
Wed, Feb 11 - Tue, Feb 17
ORD
Chicago
GTF
Great Falls
$273 Roundtrip, found 1 day ago
$273
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Feb 11 from Chicago to Great Falls, returning Tue, Feb 17, priced at $273 found 1 day ago
United
Sat, Jan 10 - Tue, Jan 13
ORD
Chicago
GTF
Great Falls
$276 Roundtrip, found 3 days ago
$276
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jan 10 from Chicago to Great Falls, returning Tue, Jan 13, priced at $276 found 3 days ago

Find the cheapest month to fly from Chicago (ORD) to Great Falls (GTF)

September is typically the cheapest month to fly

From $239 - $515 per traveler.

Alternative airports near Great Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Great Falls Intl. GTF. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $292
GTF
Great Falls Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $292

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF) cost?
Grab a cheap one-way flight from $127 or cheap return flight from $254 from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF)?
Flying in December may help you find better deals, as it's the cheapest month for flights between ORD and GTF. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from ORD to GTF. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF)?
You'll have to book a flight with a layover when traveling from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from ORD to GTF?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF)?
Select a flight from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF) that takes off before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF) last-minute?
Booking your ticket from ORD to GTF right before your journey is typically more expensive. However, if there's some wiggle room with your travel times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an ORD to GTF flight and hotel package?
Compared with arranging flights and hotels separately, booking an ORD to GTF flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Simply secure your flights and choose from our extensive range of stays, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Great Falls Intl. Airport (GTF)?
If you reserved your ORD to GTF flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$251
Distance
1206 mi

Book with confidence

Chicago to Great Falls Flights

The cheapest times to fly from Chicago to Great Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Great Falls are during the month of December. You can find some of the cheapest flights from Chicago to Great Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Great Falls

Sunday is one of the best days to book for cheap flights from Chicago to Great Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Great Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $127 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Great Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Great Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Chicago to Great Falls Flights

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*Available to One Key members.