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

View $127 flight on Fri, Sep 5, 2025Opens in a new window

Popular airlines from Chicago Midway Airport (MDW) to Great Falls, MT (GTF-Great Falls Intl.)

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

Prices were available within the past 7 days and start at $127 for one-way flights and $255 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 16 - Tue, Sep 23
MDW
Chicago
GTF
Great Falls
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep 16 from Chicago to Great Falls, returning Tue, Sep 23, priced at $255 found 1 day ago
Delta
Wed, Aug 13 - Mon, Aug 25
MDW
Chicago
GTF
Great Falls
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 13 from Chicago to Great Falls, returning Mon, Aug 25, priced at $260 found 1 day ago
Delta
Sat, Sep 13 - Sat, Sep 20
MDW
Chicago
GTF
Great Falls
$265 Roundtrip, found 5 days ago
$265
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Sep 13 from Chicago to Great Falls, returning Sat, Sep 20, priced at $265 found 5 days ago
Delta
Sat, Aug 16 - Mon, Aug 25
MDW
Chicago
GTF
Great Falls
$272 Roundtrip, found 1 day ago
$272
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 16 from Chicago to Great Falls, returning Mon, Aug 25, priced at $272 found 1 day ago
Delta
Tue, Nov 4 - Tue, Nov 18
MDW
Chicago
GTF
Great Falls
$292 Roundtrip, found 2 days ago
$292
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Chicago to Great Falls, returning Tue, Nov 18, priced at $292 found 2 days ago
Delta
Sat, Nov 8 - Tue, Nov 18
MDW
Chicago
GTF
Great Falls
$302 Roundtrip, found 2 days ago
$302
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 8 from Chicago to Great Falls, returning Tue, Nov 18, priced at $302 found 2 days ago
Delta
Wed, Nov 5 - Tue, Nov 18
MDW
Chicago
GTF
Great Falls
$304 Roundtrip, found 2 days ago
$304
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Nov 5 from Chicago to Great Falls, returning Tue, Nov 18, priced at $304 found 2 days ago
Delta
Fri, Sep 12 - Tue, Sep 23
MDW
Chicago
GTF
Great Falls
$312 Roundtrip, found 5 days ago
$312
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Sep 12 from Chicago to Great Falls, returning Tue, Sep 23, priced at $312 found 5 days ago
Delta
Tue, Nov 4 - Mon, Nov 24
MDW
Chicago
GTF
Great Falls
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Chicago to Great Falls, returning Mon, Nov 24, priced at $322 found 2 days ago
Delta
Wed, Aug 13 - Sat, Aug 16
MDW
Chicago
GTF
Great Falls
$327 Roundtrip, found 5 days ago
$327
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Aug 13 from Chicago to Great Falls, returning Sat, Aug 16, priced at $327 found 5 days ago

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 $409
GTF
Great Falls Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $409
Flights from Chicago (MDW) to Great Falls (GTF)
Origin airport
Midway Intl.
Destination airport
Great Falls Intl.
Airlines serving
Delta
Roundtrip price
$254
Distance
1220 mi

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 September. 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.

 

Frequently asked questions

How much does a flight from Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF) cost?
Discover the latest flight deals from MDW to GTF by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from MDW to GTF?
The cheapest flights from MDW to GTF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from MDW to GTF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from MDW to GTF. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF)?
Nonstop flights from Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from MDW to GTF?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF)?
To avoid possible delays on the Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF) last-minute?
Last-minute fares from MDW to GTF are usually more expensive. For the lowest rates, start searching for flights as early as possible. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare right before your trip.
Is it cheaper to book a MDW to GTF flight and hotel package?
Compared with arranging flights and hotels separately, booking a MDW to GTF flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the stress out of travel planning. Just pick your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Midway Intl. Airport (MDW) to Great Falls Intl. Airport (GTF)?
Usually, it's possible to reschedule or cancel your MDW to GTF flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.