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Cheap flights from Great Falls to Chicago from $123

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 9/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Great Falls to Chicago

Cheap round-trip flights

Delta Logo
6:11 pm - 11:55 pmGTF-ORD
28h 44m2 stops
Delta Logo
7:55 am - 12:25 pmORD-GTF
5h 30m1 stop
$302Delta
Find Deal
Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
2:30 pm - 11:59 pmGTF-ORD
8h 29m1 stop
United Airlines Logo
7:10 am - 1:33 pmORD-GTF
7h 23m1 stop
$312United Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
Logo
9:33 pm - 9:44 amGTF-ORD
11h 11m2 stops
Logo
10:43 pm - 9:31 pmORD-GTF
23h 48m1 stop
$349
Find Deal
Fri, Nov 7 - Sun, Nov 9
Delta Logo
1:05 pm - 9:57 pmGTF-ORD
7h 52m1 stop
Delta Logo
7:55 am - 12:25 pmORD-GTF
5h 30m1 stop
$379Delta
Find Deal
Tue, Sep 23 - Tue, Sep 30
Logo
9:33 pm - 7:16 pmGTF-ORD
20h 43m2 stops
Logo
10:05 pm - 9:31 pmORD-GTF
24h 26m2 stops
$393
Find Deal
Fri, Nov 7 - Sun, Nov 9
Logo
9:33 pm - 7:16 pmGTF-ORD
20h 43m2 stops
Logo
10:05 pm - 9:31 pmORD-GTF
24h 26m3 stops
$411
Find Deal
Fri, Nov 7 - Sun, Nov 9
Logo
9:33 pm - 9:00 pmGTF-ORD
22h 27m3 stops
Logo
10:05 pm - 9:31 pmORD-GTF
24h 26m3 stops
$439
Find Deal
Fri, Nov 7 - Sun, Nov 9
United Airlines Logo
2:35 pm - 11:59 pmGTF-ORD
8h 24m1 stop
United Airlines Logo
5:00 am - 9:28 pmORD-GTF
17h 28m1 stop
$487United Airlines
Find Deal
Wed, Sep 10 - Sun, Sep 14
Alaska Airlines Logo
7:42 pm - 6:28 amGTF-ORD
9h 46m1 stop
Alaska Airlines Logo
6:00 am - 7:02 pmORD-GTF
14h 02m1 stop
$666Alaska Airlines
Find Deal
Sat, Nov 22 - Sun, Nov 30
Alaska Airlines Logo
7:42 pm - 6:28 amGTF-ORD
9h 46m1 stop
Alaska Airlines Logo
6:00 am - 7:02 pmORD-GTF
14h 02m1 stop
$670Alaska Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 30

Delta flights from Great Falls to Chicago

Our best Delta deals on Great Falls to Chicago flight tickets
Delta
Sep 23
GTF6:11 pmGreat Falls
28h 44m
2 stops
ORD11:55 pmChicago O'Hare Intl
Sep 30
ORD7:55 amChicago O'Hare Intl
5h 30m
1 stop
GTF12:25 pmGreat Falls
$302
Find similar
Delta
Sep 23
GTF1:05 pmGreat Falls
7h 52m
1 stop
ORD9:57 pmChicago O'Hare Intl
Sep 30
ORD7:55 amChicago O'Hare Intl
5h 30m
1 stop
GTF12:25 pmGreat Falls
$379
Find similar
Delta
Aug 29
GTF5:45 amGreat Falls
5h 13m
1 stop
ORD11:58 amChicago O'Hare Intl
Sep 1
ORD3:50 pmChicago O'Hare Intl
5h 44m
1 stop
GTF8:34 pmGreat Falls
$684
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United Airlines flights from Great Falls to Chicago

Our best United Airlines deals on Great Falls to Chicago flight tickets
United Airlines
Nov 7
GTF2:30 pmGreat Falls
8h 29m
1 stop
ORD11:59 pmChicago O'Hare Intl
Nov 9
ORD7:10 amChicago O'Hare Intl
7h 23m
1 stop
GTF1:33 pmGreat Falls
$312
Find similar
United Airlines
Sep 10
GTF2:35 pmGreat Falls
8h 24m
1 stop
ORD11:59 pmChicago O'Hare Intl
Sep 14
ORD5:00 amChicago O'Hare Intl
17h 28m
1 stop
GTF9:28 pmGreat Falls
$487
Find similar
United Airlines
Sep 10
GTF2:35 pmGreat Falls
5h 57m
1 stop
ORD9:32 pmChicago O'Hare Intl
Sep 14
ORD7:50 pmChicago O'Hare Intl
18h 47m
2 stops
GTF1:37 pmGreat Falls
$498
Find similar

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 27, 2025.
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

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 9/23

6:11 pm-11:55 pm

2 stops28h 44m

Chicago O'Hare Intl

Tue 9/30

7:55 am-12:25 pm

1 stop5h 30m

$302

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/7

2:30 pm-11:59 pm

1 stop8h 29m

Chicago O'Hare Intl

Sun 11/9

7:10 am-1:33 pm

1 stop7h 23m

$312

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/7

9:33 pm-9:44 am

2 stops11h 11m

Chicago O'Hare Intl

Sun 11/9

10:43 pm-9:31 pm

1 stop23h 48m

$349

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 9/23

1:05 pm-9:57 pm

1 stop7h 52m

Chicago O'Hare Intl

Tue 9/30

7:55 am-12:25 pm

1 stop5h 30m

$379

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/7

9:33 pm-7:16 pm

2 stops20h 43m

Chicago O'Hare Intl

Sun 11/9

10:05 pm-9:31 pm

2 stops24h 26m

$393

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/7

9:33 pm-7:16 pm

2 stops20h 43m

Chicago O'Hare Intl

Sun 11/9

10:05 pm-9:31 pm

3 stops24h 26m

$411

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/7

9:33 pm-9:00 pm

3 stops22h 27m

Chicago O'Hare Intl

Sun 11/9

10:05 pm-9:31 pm

3 stops24h 26m

$439

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 9/10

2:35 pm-11:59 pm

1 stop8h 24m

Chicago O'Hare Intl

Sun 9/14

5:00 am-9:28 pm

1 stop17h 28m

$487

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 11/22

7:42 pm-6:28 am

1 stop9h 46m

Chicago O'Hare Intl

Sun 11/30

6:00 am-7:02 pm

1 stop14h 02m

$666

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/21

7:42 pm-6:28 am

1 stop9h 46m

Chicago O'Hare Intl

Sun 11/30

6:00 am-7:02 pm

1 stop14h 02m

$670

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 September is, on average, the cheapest month to fly to Chicago from Great Falls, with most prices found around $307. If you’re not able to fly to Chicago in September, then December is your next best option. Flight prices from Great Falls to Chicago during December average around $324.

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 Tuesday when prices can be found for as low as $299. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Great Falls to Chicago for around $661.

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

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Great Falls to Chicago during this time can be as low as $349. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $660.

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 72% 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

Direct flights

None
There are no direct flights from Great Falls to Chicago. There are no popular flight routes from Great Falls to Chicago.
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  • 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 57m.

  • 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 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
Alaska AirlinesPriceFrom $430Free CancellationRating
8.0
10,000 reviews
Search Alaska 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
Benton Harbor
Saint Joseph
Lansing
Portage
Schererville
Valparaiso
Crown Point
Munster
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