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Cheap flights from Great Falls to Chicago from $271

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 7/18. 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
5:40 am - 11:55 am
GTF
-
ORD
5h 15m
1 stop
Delta Logo
7:45 am - 12:35 pm
ORD
-
GTF
5h 50m
1 stop
$318Delta
Thu, Oct 1 - Mon, Oct 5
Delta Logo
6:21 pm - 8:35 am
GTF
-
ORD
13h 14m
2 stops
Delta Logo
7:45 am - 12:35 pm
ORD
-
GTF
5h 50m
1 stop
$324Delta
Sun, Sep 27 - Sun, Oct 4
Delta Logo
6:21 pm - 8:35 am
GTF
-
ORD
13h 14m
2 stops
Delta Logo
1:35 pm - 10:53 pm
ORD
-
GTF
10h 18m
2 stops
$329Delta
Sun, Sep 27 - Fri, Oct 9
United Airlines Logo
2:25 pm - 10:00 pm
GTF
-
ORD
6h 35m
1 stop
United Airlines Logo
5:55 am - 1:29 pm
ORD
-
GTF
8h 34m
1 stop
$347United Airlines
Fri, Sep 11 - Fri, Sep 18
Delta Logo
5:40 am - 11:55 am
GTF
-
ORD
5h 15m
1 stop
Delta Logo
7:30 am - 12:27 pm
ORD
-
GTF
5h 57m
1 stop
$348Delta
Wed, Sep 30 - Thu, Oct 8
Delta Logo
1:15 pm - 11:59 pm
GTF
-
ORD
9h 44m
2 stops
Delta Logo
7:45 am - 12:35 pm
ORD
-
GTF
5h 50m
1 stop
$354Delta
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
2:25 pm - 9:29 pm
GTF
-
ORD
6h 04m
1 stop
United Airlines Logo
5:55 am - 1:29 pm
ORD
-
GTF
8h 34m
1 stop
$358United Airlines
Fri, Aug 21 - Sun, Aug 23
Delta Logo
6:21 pm - 8:35 am
GTF
-
ORD
13h 14m
2 stops
Delta Logo
3:50 pm - 10:53 pm
ORD
-
GTF
8h 03m
2 stops
$359Delta
Sun, Sep 27 - Wed, Oct 7
United Airlines Logo
2:25 pm - 10:46 pm
GTF
-
ORD
7h 21m
1 stop
United Airlines Logo
5:55 am - 1:29 pm
ORD
-
GTF
8h 34m
1 stop
$368United Airlines
Thu, Sep 10 - Thu, Sep 17
Delta Logo
5:40 am - 11:59 am
GTF
-
ORD
5h 19m
1 stop
Delta Logo
4:45 pm - 10:38 pm
ORD
-
GTF
6h 53m
1 stop
$378Delta
Wed, Aug 5 - Sat, Aug 8

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Alaska Airlines flights from Great Falls to Chicago

Our best Alaska Airlines deals on Great Falls to Chicago flight tickets
Alaska Airlines
Sep 11
GTF5:19 pmGreat Falls
25h 56m
2 stops
ORD8:15 pmChicago O'Hare Intl
Sep 18
ORD7:00 pmChicago O'Hare Intl
22h 39m
1 stop
GTF4:39 pmGreat Falls
$415
Alaska Airlines
Aug 12
GTF5:09 pmGreat Falls
12h 11m
1 stop
ORD6:20 amChicago O'Hare Intl
Aug 14
ORD6:00 amChicago O'Hare Intl
11h 29m
1 stop
GTF4:29 pmGreat Falls
$417
Alaska Airlines
Aug 8
GTF5:09 pmGreat Falls
12h 11m
1 stop
ORD6:20 amChicago O'Hare Intl
Aug 11
ORD8:02 amChicago O'Hare Intl
9h 27m
1 stop
GTF4:29 pmGreat Falls
$418

United Airlines flights from Great Falls to Chicago

Our best United Airlines deals on Great Falls to Chicago flight tickets
United Airlines
Aug 21
GTF2:25 pmGreat Falls
6h 04m
1 stop
ORD9:29 pmChicago O'Hare Intl
Aug 24
ORD3:56 pmChicago O'Hare Intl
6h 16m
1 stop
GTF9:12 pmGreat Falls
$318
United Airlines
Sep 11
GTF2:25 pmGreat Falls
6h 35m
1 stop
ORD10:00 pmChicago O'Hare Intl
Sep 18
ORD5:55 amChicago O'Hare Intl
8h 34m
1 stop
GTF1:29 pmGreat Falls
$347
United Airlines
Aug 21
GTF2:25 pmGreat Falls
6h 04m
1 stop
ORD9:29 pmChicago O'Hare Intl
Aug 23
ORD5:55 amChicago O'Hare Intl
8h 34m
1 stop
GTF1:29 pmGreat Falls
$358

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 June 26, 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
Quickest round-trip

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 10/1

5:40 am-11:55 am

1 stop5h 15m

Chicago O'Hare Intl

Mon 10/5

7:45 am-12:35 pm

1 stop5h 50m

$318

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 9/27

6:21 pm-8:35 am

2 stops13h 14m

Chicago O'Hare Intl

Sun 10/4

7:45 am-12:35 pm

1 stop5h 50m

$324

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 9/27

6:21 pm-8:35 am

2 stops13h 14m

Chicago O'Hare Intl

Fri 10/9

1:35 pm-10:53 pm

2 stops10h 18m

$329

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 9/11

2:25 pm-10:00 pm

1 stop6h 35m

Chicago O'Hare Intl

Fri 9/18

5:55 am-1:29 pm

1 stop8h 34m

$347

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 9/30

5:40 am-11:55 am

1 stop5h 15m

Chicago O'Hare Intl

Thu 10/8

7:30 am-12:27 pm

1 stop5h 57m

$348

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 10/1

1:15 pm-11:59 pm

2 stops9h 44m

Chicago O'Hare Intl

Mon 10/5

7:45 am-12:35 pm

1 stop5h 50m

$354

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 8/21

2:25 pm-9:29 pm

1 stop6h 04m

Chicago O'Hare Intl

Sun 8/23

5:55 am-1:29 pm

1 stop8h 34m

$358

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 9/27

6:21 pm-8:35 am

2 stops13h 14m

Chicago O'Hare Intl

Wed 10/7

3:50 pm-10:53 pm

2 stops8h 03m

$359

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 9/10

2:25 pm-10:46 pm

1 stop7h 21m

Chicago O'Hare Intl

Thu 9/17

5:55 am-1:29 pm

1 stop8h 34m

$368

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 8/5

5:40 am-11:59 am

1 stop5h 19m

Chicago O'Hare Intl

Sat 8/8

4:45 pm-10:38 pm

1 stop6h 53m

$378

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 $587. 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 $621.

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 is only 1 cabin class 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 36% 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

$201

Fastest flight time

3h 18m

Direct flights

Wed, Thu, Fri and Sun

Airports in Chicago

3 airports
The best one-way flight to Chicago from Great Falls in the past 72 hours is $201. The best round-trip flight deal from Great Falls to Chicago found on momondo in the last 72 hours is $568.
The fastest flight from Great Falls to Chicago takes 3h 18m
Direct flights go from Great Falls to Chicago on Wednesday, Thursday, Friday and Sunday. There are no airlines offering direct flights.
There are 3 airports in Chicago. From Great Falls there are direct flights to Chicago O'Hare Intl (ORD).
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 3h 18m.

  • 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 $129Free CancellationRating
7.8
8,453 reviews
Search Delta flights
United AirlinesPriceFrom $300Free CancellationRating
7.4
9,893 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
Saint Joseph
Lansing
Valparaiso
Schererville
Munster
Crown Point
Chesterton
Monticello
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