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$241+ Cheap flights from Great Falls (GTF) to Chicago (CHI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — CHI
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Great Falls to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$241
(Mytrip)

Popular in

November

Cheapest in

September

Average price

$532

Good round-trip deal

$721 or less
From Great Falls to Chicago (CHI)
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Highest demand for flights based on searches. 12% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Great Falls to Chicago (CHI).
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Find flight deals from Great Falls to Chicago

Cheapest flights from Great Falls to Chicago
Explore the most affordable flight options available from Great Falls to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1910:21 pmGTF - ORD
1 stop12h 30mMultiple Airlines
Mon 9/228:15 amORD - GTF
1 stop8h 50mMultiple Airlines
Deal found 7/29$241
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2011:43 amGTF - ORD
1 stop5h 24mDelta
Mon 8/253:50 pmORD - GTF
1 stop5h 44mDelta
Deal found 7/28$253
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:06 pmGTF - MDW
2 stops14h 30mDelta
Sat 8/231:43 pmMDW - GTF
2 stops10h 02mDelta
Deal found 7/28$268
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/192:35 pmGTF - ORD
1 stop7h 07mUnited Airlines
Sat 8/231:58 pmORD - GTF
1 stop8h 30mUnited Airlines
Deal found 7/28$269
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/84:29 pmGTF - ORD
2 stops19h 42mAlaska Airlines
Wed 9/1010:00 amORD - GTF
1 stop6h 49mAlaska Airlines
Deal found 7/26$405

Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Great Falls to Chicago that are best for you.

Fly from

Great Falls

Fly to

Chicago

Route

Depart

Return

Price

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 9/19

10:21 pm-11:51 am

1 stop12h 30m

Chicago O'Hare Intl

Mon 9/22

8:15 am-4:05 pm

1 stop8h 50m

$241

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 8/20

11:43 am-6:07 pm

1 stop5h 24m

Chicago O'Hare Intl

Mon 8/25

3:50 pm-8:34 pm

1 stop5h 44m

$253

Great FallsChicago

GTF - MDW

GTFMDW

Great Falls

Mon 8/18

6:06 pm-9:36 am

2 stops14h 30m

Chicago Midway

Sat 8/23

1:43 pm-10:45 pm

2 stops10h 02m

$268

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 8/19

2:35 pm-10:42 pm

1 stop7h 07m

Chicago O'Hare Intl

Sat 8/23

1:58 pm-9:28 pm

1 stop8h 30m

$269

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 9/8

4:29 pm-1:11 pm

2 stops19h 42m

Chicago O'Hare Intl

Wed 9/10

10:00 am-3:49 pm

1 stop6h 49m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Great Falls to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Great Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Great Falls to Chicago

What is the cheapest time of day to fly from GTF to CHI?

Find hourly flight availability from Great Falls to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s typically best to fly out from Great Falls to Chicago in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated July 29, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Great Falls to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Great Falls to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Great Falls to Chicago?

    For a flight from Great Falls to Chicago, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city. Great Falls is the only Great Falls airport and it handles 0 outbound flights to Chicago per day. 2 airlines have flights to Chicago from Great Falls on a regular basis.

  • What are the cheapest airlines flying from Great Falls to Chicago round-trip?

    Cheapflights users have booked flights from Great Falls to Chicago round-trip from $253. Other airlines that can offer you cheap pricing are United Airlines, from $269, and Alaska Airlines, from $405. These flights start at 49% lower than the current average price 3 months from now.

  • What are the cheapest flights from Great Falls to Chicago?

    On average you can expect to pay $728 for a flight from Great Falls to Chicago. The cheapest flight overall is $721 while the most popular route, (Great Falls - Chicago O'Hare Intl) is currently priced at $253.

  • Can I find deals for flights from Great Falls to Chicago that include hotel bookings?

    Yes. In addition to deals on Great Falls to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Chicago.

  • Can I find deals for business class flights from Great Falls to Chicago?

    Yes. Cheapflights offers flight deals from Great Falls to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Great Falls to Chicago?

    Currently, August is the cheapest month in which you can book a flight from Great Falls to Chicago (average of $245). Flying from Great Falls to Chicago in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Valparaiso
Chesterton

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Alternative routes for Great Falls to Chicago

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Top 2 airlines flying from Great Falls to Chicago

Discover the top 2 airlines that operate flights from Great Falls to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$226Average$393FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$430Average$588FlexibilityNo cancel feeOn-time75%

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