GTF - CHI

$128 Find Cheap Flights from Great Falls to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Great Falls to Chicago departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Great Falls to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Great Falls to Chicago, as well as popular online travel agencies
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Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Great Falls to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Great Falls to Chicago

Fri, Aug 29 - Tue, Sep 2
Alaska Airlines Logo
4:29 pm - 7:03 amGTF-ORD
13h 34m1 stop
Alaska Airlines Logo
8:00 am - 3:49 pmORD-GTF
8h 49m1 stop
$304Alaska Airlines
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Wed, Oct 1 - Thu, Oct 9
United Airlines Logo
2:31 pm - 10:39 pmGTF-ORD
7h 08m1 stop
United Airlines Logo
2:53 pm - 9:11 pmORD-GTF
7h 18m1 stop
$328United Airlines
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Wed, Aug 20 - Sun, Aug 24
United Airlines Logo
2:35 pm - 11:59 pmGTF-ORD
8h 24m1 stop
United Airlines Logo
7:15 am - 1:37 pmORD-GTF
7h 22m1 stop
$338United Airlines
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Sat, Jun 28 - Sat, Jul 5
United Airlines Logo
2:35 pm - 9:10 pmGTF-ORD
5h 35m1 stop
United Airlines Logo
8:45 am - 11:29 amORD-GTF
3h 44mnonstop
$350United Airlines
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Fri, Aug 1 - Sat, Aug 9
United Airlines Logo
2:35 pm - 9:10 pmGTF-ORD
5h 35m1 stop
United Airlines Logo
8:45 am - 11:29 amORD-GTF
3h 44mnonstop
$367United Airlines
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Fri, Aug 1 - Sat, Aug 9
United Airlines Logo
2:35 pm - 9:10 pmGTF-ORD
5h 35m1 stop
United Airlines Logo
2:35 pm - 9:13 pmORD-GTF
7h 38m1 stop
$369United Airlines
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Fri, Aug 1 - Sat, Aug 9
Logo
10:14 am - 6:03 amGTF-ORD
18h 49m1 stop
Logo
7:49 pm - 7:12 pmORD-GTF
24h 23m3 stops
$371
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Fri, Aug 1 - Sat, Aug 9
Logo
10:14 am - 8:55 amGTF-ORD
21h 41m2 stops
Logo
7:49 pm - 7:12 pmORD-GTF
24h 23m3 stops
$409
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Sat, Jun 28 - Sat, Jul 5
Delta Logo
6:18 pm - 8:41 amGTF-MDW
13h 23m2 stops
Delta Logo
1:09 pm - 8:32 pmMDW-GTF
8h 23m2 stops
$440Delta
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Mon, Jun 23 - Fri, Jul 11
Delta Logo
6:18 pm - 7:49 amGTF-ORD
12h 31m2 stops
Delta Logo
2:00 pm - 10:45 pmORD-GTF
9h 45m2 stops
$498Delta
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Useful Info

KAYAK's insights & trends for Great Falls to Chicago flights

Get data-powered insights and trends into flights from Great Falls to Chicago to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Great Falls to Chicago flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Great Falls to Chicago.

Our data shows that the cheapest route for a return flight from Great Falls to Chicago cost $368 and was between Great Falls (GTF) and Chicago O'Hare Intl Airport (ORD). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $368.

What’s the cheapest day of the week to fly from Great Falls to Chicago?

The average price of all round-trip flights from Great Falls to Chicago clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Chicago on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Great Falls to Chicago. For your return ticket, we recommend flying on a Wednesday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from Great Falls to Chicago?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Great Falls to Chicago, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Great Falls to Chicago is September, where tickets cost $307 (return) on average. On the other hand, the most expensive months are November and August, where the average cost of round-trip tickets is $913 and $573 respectively.

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Good to know

Low seasonMay
High seasonOctober
Cheapest flight$128
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Great Falls to Chicago O'Hare Airport

When to book flights from Great Falls to Chicago

Are your dates flexible? Find out the best times to travel from Great Falls to Chicago based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Great Falls to Chicago

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

    In the last 3 days, the lowest price for a flight from Great Falls to Chicago was $128 for a one-way ticket and $304 for a round-trip.

  • Do I need a passport to fly between Great Falls and Chicago?

    No

  • Which airports will I be using when flying from Great Falls to Chicago?

    On your way to Chicago, you’ll fly out from Great Falls. You’ll be landing in one of Chicago’s 2 airports: Chicago Midway or Chicago O'Hare Intl.

  • Which aircraft models fly most regularly from Great Falls to Chicago?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Great Falls to Chicago flight route.

  • Which airline alliances offer flights from Great Falls to Chicago?

    Star Alliance is the only airline alliance operating flights between Great Falls and Chicago.

  • On which days can I fly direct from Great Falls to Chicago?

    You can catch a nonstop flight from Great Falls to Chicago on on Saturday.

  • How does KAYAK find such low prices on flights from Great Falls to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Great Falls to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Great Falls to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Great Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Great Falls to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Great Falls with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Great Falls to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Great Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Great Falls to Chicago

  • Looking for a cheap flight? 25% of our users found flights on this route for $264 or less one-way and $571 or less round-trip.

Prefer to fly direct from Great Falls to Chicago?

Find which airlines fly direct from Great Falls Airport to Chicago, which days they fly and book direct flights.

Direct departures

Great Falls to Chicago

Saturday

United Airlines

United Airlines

See more direct flights

Direct returns

Chicago to Great Falls

Saturday

United Airlines

United Airlines

See more direct flights
See more direct flights

Top airline flying from Great Falls to Chicago

 
See real verified KAYAK customer reviews for airlines flying from Great Falls to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Great Falls to Chicago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7950 reviews
7.9Entertainment
8.5Crew
7.9Comfort
8.2Boarding
7.3Food
Airline reviews

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

10.0 ExcellentTim, Jun 2025MSP - BUF
Read more Delta reviews

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

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

Information on your arrival and departure airports

Great Falls (GTF)

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