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Cheap flights from Great Falls to Chicago from $170

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Chicago departing on 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Great Falls to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:13 pm - 9:47 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 34m1 stop Salt Lake City
Delta Logo
7:35 am - 12:31 pmORD  Chicago O'Hare Intl-GTF Great Falls
5h 56m1 stop Salt Lake City
$328Delta
Tue, Dec 8 - Mon, Dec 14
Delta Logo
1:18 pm - 10:00 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 42m1 stop Salt Lake City
Delta Logo
7:35 am - 12:38 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 03m1 stop Salt Lake City
$328Delta
Sat, Oct 24 - Sun, Nov 1
United Airlines Logo
2:25 pm - 9:59 pmGTF  Great Falls-ORD Chicago O'Hare Intl
6h 34m1 stop Denver Intl
United Airlines Logo
6:00 am - 1:29 pmORD  Chicago O'Hare Intl-GTF Great Falls
8h 29m1 stop Denver Intl
$328United Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
2:37 pm - 10:46 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 09m1 stop Denver Intl
United Airlines Logo
4:20 pm - 9:22 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 02m1 stop Denver Intl
$328United Airlines
Wed, Oct 7 - Sat, Oct 10
Alaska Airlines Logo
4:57 pm - 5:40 amGTF  Great Falls-ORD Chicago O'Hare Intl
11h 43m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 4:17 pmORD  Chicago O'Hare Intl-GTF Great Falls
10h 17m1 stop Seattle/Tacoma Intl
$328Alaska Airlines
Mon, Nov 9 - Sat, Nov 14
Delta Logo
1:18 pm - 10:00 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 42m1 stop Salt Lake City
Delta Logo
7:35 am - 12:38 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 03m1 stop Salt Lake City
$328Delta
Tue, Oct 20 - Sat, Oct 24
Delta Logo
1:18 pm - 10:00 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 42m1 stop Salt Lake City
Delta Logo
7:35 am - 12:38 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 03m1 stop Salt Lake City
$328Delta
Wed, Oct 21 - Sat, Oct 24
United Airlines Logo
2:45 pm - 10:46 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 01m1 stop Denver Intl
United Airlines Logo
8:40 am - 1:49 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 09m1 stop Denver Intl
$328United Airlines
Thu, Nov 5 - Mon, Nov 9
Alaska Airlines Logo
5:15 pm - 5:40 amGTF  Great Falls-ORD Chicago O'Hare Intl
11h 25m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:16 pm - 4:35 pmORD  Chicago O'Hare Intl-GTF Great Falls
22h 19m1 stop Seattle/Tacoma Intl
$398Alaska Airlines
Tue, Oct 20 - Fri, Oct 23
Alaska Airlines Logo
5:15 pm - 5:40 amGTF  Great Falls-ORD Chicago O'Hare Intl
11h 25m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:00 am - 4:35 pmORD  Chicago O'Hare Intl-GTF Great Falls
8h 35m1 stop Seattle/Tacoma Intl
$433Alaska Airlines
Mon, Oct 19 - Thu, Oct 22

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Delta flights from Great Falls to Chicago

Our best Delta deals on Great Falls to Chicago flight tickets
Delta
Dec 8
GTF1:13 pmGreat Falls
7h 34m
1 stop
ORD9:47 pmChicago O'Hare Intl
Dec 14
ORD7:35 amChicago O'Hare Intl
5h 56m
1 stop
GTF12:31 pmGreat Falls
$328
Delta
Dec 8
GTF1:13 pmGreat Falls
7h 34m
1 stop
ORD9:47 pmChicago O'Hare Intl
Dec 14
ORD2:44 pmChicago O'Hare Intl
9h 02m
2 stops
GTF10:46 pmGreat Falls
$334
Delta
Dec 8
GTF5:35 amGreat Falls
10h 06m
2 stops
ORD4:41 pmChicago O'Hare Intl
Dec 14
ORD2:44 pmChicago O'Hare Intl
9h 02m
2 stops
GTF10:46 pmGreat Falls
$339

Alaska Airlines flights from Great Falls to Chicago

Our best Alaska Airlines deals on Great Falls to Chicago flight tickets
Alaska Airlines
Oct 20
GTF5:15 pmGreat Falls
11h 25m
1 stop
ORD5:40 amChicago O'Hare Intl
Oct 23
ORD7:16 pmChicago O'Hare Intl
22h 19m
1 stop
GTF4:35 pmGreat Falls
$398
Alaska Airlines
Oct 19
GTF5:15 pmGreat Falls
11h 25m
1 stop
ORD5:40 amChicago O'Hare Intl
Oct 22
ORD9:00 amChicago O'Hare Intl
8h 35m
1 stop
GTF4:35 pmGreat Falls
$433
Alaska Airlines
Sep 5
GTF5:25 pmGreat Falls
26h 03m
2 stops
ORD8:28 pmChicago O'Hare Intl
Sep 12
ORD8:00 amChicago O'Hare Intl
9h 39m
1 stop
GTF4:39 pmGreat Falls
$464

momondo 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, momondo users made 832,500 searches. Data last updated August 8, 2026.
Use the filters below to find and compare flights from Great Falls to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Tue 12/8

1:13 pm-9:47 pm

1 stop7h 34m

Chicago O'Hare Intl

Mon 12/14

7:35 am-12:31 pm

1 stop5h 56m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Sat 10/24

1:18 pm-10:00 pm

1 stop7h 42m

Chicago O'Hare Intl

Sun 11/1

7:35 am-12:38 pm

1 stop6h 03m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Sat 9/5

2:25 pm-9:59 pm

1 stop6h 34m

Chicago O'Hare Intl

Sat 9/12

6:00 am-1:29 pm

1 stop8h 29m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Wed 10/7

2:37 pm-10:46 pm

1 stop7h 09m

Chicago O'Hare Intl

Sat 10/10

4:20 pm-9:22 pm

1 stop6h 02m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Mon 11/9

4:57 pm-5:40 am

1 stop11h 43m

Chicago O'Hare Intl

Sat 11/14

7:00 am-4:17 pm

1 stop10h 17m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Tue 10/20

1:18 pm-10:00 pm

1 stop7h 42m

Chicago O'Hare Intl

Sat 10/24

7:35 am-12:38 pm

1 stop6h 03m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Wed 10/21

1:18 pm-10:00 pm

1 stop7h 42m

Chicago O'Hare Intl

Sat 10/24

7:35 am-12:38 pm

1 stop6h 03m

$328
Quickest round-trip

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Thu 11/5

2:45 pm-10:46 pm

1 stop7h 01m

Chicago O'Hare Intl

Mon 11/9

8:40 am-1:49 pm

1 stop6h 09m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Tue 10/20

5:15 pm-5:40 am

1 stop11h 25m

Chicago O'Hare Intl

Fri 10/23

7:16 pm-4:35 pm

1 stop22h 19m

$398

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Mon 10/19

5:15 pm-5:40 am

1 stop11h 25m

Chicago O'Hare Intl

Thu 10/22

9:00 am-4:35 pm

1 stop8h 35m

$433

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Great Falls to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chicago?

The month of November is, on average, the cheapest month to fly to Chicago from Great Falls, with most prices found around $0. If you’re not able to fly to Chicago in November, then January is your next best option. Flight prices from Great Falls to Chicago during January average around $0.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Saturday when prices can be found for as low as $576. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Great Falls to Chicago for around $603.

What is the cheapest Great Falls to Chicago flight route?

Fly from Great Falls to Chicago O'Hare Intl for the best Great Falls - Chicago flight prices

What cabin class options are available on Great Falls to Chicago flights?

There are 3 cabin classes available to choose from on Great Falls to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Great Falls to Chicago flights?

You could potentially save up to 75% on your flight if you consider stops on a Great Falls to Chicago flight.

When to book flights from Great Falls to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Chicago according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Chicago (GTF to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Chicago

Best Price Found

$448

Fastest flight time

5h 28m

Direct flights

None
The best one-way flight to Chicago from Great Falls in the past 72 hours is $448. The best round-trip flight deal from Great Falls to Chicago found on momondo in the last 72 hours is $478.
The fastest flight from Great Falls to Chicago takes 5h 28m
There are no direct flights from Great Falls to Chicago. Popular non-direct route for this connection is Great Falls Airport - Chicago O'Hare Intl Airport.
Search flight deals

Frequently asked questions about flying from Great Falls to Chicago

  • How far is Great Falls to Chicago by plane?

    A flight from Great Falls to Chicago will travel around 1219.6 mi. In terms of flight time, this usually takes a little over 5h 28m.

  • When did momondo last update prices for flights from Great Falls Airport to Chicago?

    Prices for flights from Great Falls Airport to Chicago were last updated today.

  • How many operators does momondo search for flights from Great Falls Airport to Chicago?

  • How old do you have to be to fly from Great Falls Airport to Chicago?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Great Falls to Chicago?

  • What is the most popular airline from Great Falls to Chicago?

Best airlines flying from Great Falls to Chicago

Compare and see reviews for airlines that fly from Great Falls to Chicago with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $270Free CancellationRating
7.8
8,504 reviews
Search Delta flights
United AirlinesPriceFrom $277Free CancellationRating
7.4
10,086 reviews
Search United Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Portage
Benton Harbor
Lansing
Saint Joseph
Valparaiso
Schererville
Munster
Chesterton
Monticello
Crown Point
Porter
Griffith
Saint John

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Chicago?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Great Falls to Chicago. momondo saves you time and could save you money on your trip.

Can I find flights from Great Falls to Chicago with flexible booking policies on momondo?

Flights from Great Falls to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Great Falls to Chicago?

Once you have performed a search for Great Falls to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Great Falls to Chicago right now. Can momondo alert me if prices change?

Price alerts on flights to Chicago from Great Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport