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Cheap flights from Great Falls to Chicago from $272

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 7/23. 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.
United Airlines Logo
2:25 pm - 9:30 pm
GTF
-
ORD
6h 05m
1 stop
United Airlines Logo
7:00 am - 1:29 pm
ORD
-
GTF
7h 29m
1 stop
$318United Airlines
Sat, Sep 12 - Sat, Sep 19
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
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
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
$359United Airlines
Fri, Aug 21 - Sun, Aug 23
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
Delta Logo
5:40 am - 11:59 am
GTF
-
ORD
5h 19m
1 stop
Delta Logo
7:48 am - 12:28 pm
ORD
-
GTF
5h 40m
1 stop
$383Delta
Sat, Aug 8 - Tue, Aug 11
Multiple Airlines Logo
10:19 am - 5:37 am
GTF
-
ORD
18h 18m
1 stop
Multiple Airlines Logo
7:29 am - 9:29 am
ORD
-
GTF
27h 00m
1 stop
$390Multiple Airlines
Mon, Aug 3 - Thu, Aug 6
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
$394United Airlines
Fri, Aug 21 - Sun, Aug 23
United Airlines Logo
2:37 pm - 10:49 pm
GTF
-
ORD
7h 12m
1 stop
United Airlines Logo
4:20 pm - 9:12 pm
ORD
-
GTF
5h 52m
1 stop
$401United Airlines
Fri, Jul 31 - Tue, Aug 11

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United Airlines flights from Great Falls to Chicago O'Hare Intl Airport

Our best United Airlines deals on Great Falls to Chicago O'Hare Intl Airport flight tickets
United Airlines
Sep 12
GTF2:25 pmGreat Falls
6h 05m
1 stop
ORD9:30 pmChicago O'Hare Intl
Sep 19
ORD7:00 amChicago O'Hare Intl
7h 29m
1 stop
GTF1:29 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

Alaska Airlines flights from Great Falls to Chicago O'Hare Intl Airport

Our best Alaska Airlines deals on Great Falls to Chicago O'Hare Intl Airport 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

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Chicago O'Hare Intl Airport 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 27, 2026.
Use the filters below to find and compare flights from Great Falls to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 9/12

2:25 pm-9:30 pm

1 stop6h 05m

Chicago O'Hare Intl

Sat 9/19

7:00 am-1:29 pm

1 stop7h 29m

$318

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

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

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

$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
Quickest round-trip

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 8/8

5:40 am-11:59 am

1 stop5h 19m

Chicago O'Hare Intl

Tue 8/11

7:48 am-12:28 pm

1 stop5h 40m

$383

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 8/3

10:19 am-5:37 am

1 stop18h 18m

Chicago O'Hare Intl

Thu 8/6

7:29 am-9:29 am

1 stop27h 00m

$390

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 8/21

2:25 pm-10:00 pm

1 stop6h 35m

Chicago O'Hare Intl

Sun 8/23

5:55 am-1:29 pm

1 stop8h 34m

$394

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 7/31

2:37 pm-10:49 pm

1 stop7h 12m

Chicago O'Hare Intl

Tue 8/11

4:20 pm-9:12 pm

1 stop5h 52m

$401

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 O'Hare Intl Airport

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 typical price of a round-trip flight between Great Falls and Chicago O'Hare Intl Airport?

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The month of January is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Great Falls averaging around $0.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport 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. On the other hand, Thursday is the most expensive day to depart from Great Falls because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $621.

What is the cheapest Great Falls to Chicago O'Hare Intl flight route?

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

What cabin class options are available on Great Falls to Chicago O'Hare Intl Airport flights?

There is only 1 cabin class available to choose from on Great Falls to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport flights?

You could potentially save up to 36% on your flight if you consider stops on a Great Falls to Chicago O'Hare Intl Airport flight.

When to book flights from Great Falls to Chicago O'Hare Intl Airport

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

Cheap Great Falls to Chicago O'Hare Intl Airport (GTF to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Chicago O'Hare Intl Airport

Best Price Found

$201

Fastest flight time

3h 18m

Direct flights

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

Frequently asked questions about flying from Great Falls to Chicago O'Hare Intl Airport

  • How far is Great Falls to Chicago O'Hare Intl by plane?

    There are 1203.7 mi between Great Falls and Chicago O'Hare Intl. Flights usually cover this in 3h 18m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Great Falls Airport to Chicago O'Hare Intl Airport are updated daily.

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

  • How old do you have to be to fly from Great Falls Airport to Chicago O'Hare Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport. 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 O'Hare Intl Airport?

  • What is the most popular airline from Great Falls to Chicago O'Hare Intl Airport?

Best airlines flying from Great Falls to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Great Falls to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $129Free CancellationRating
7.8
8,451 reviews
Search Delta flights
United AirlinesPriceFrom $300Free CancellationRating
7.4
9,896 reviews
Search United Airlines flights

  • United Airlines Flights From Great Falls to Chicago O'Hare Intl Airport

    United Airlines is one of the most popular airlines flying from Great Falls to Chicago O'Hare Intl Airport, operating 1 flight/week on average for this route. A good United Airlines flight deal for Great Falls to Chicago O'Hare Intl Airport starts from $300 round-trip, up to an average price of $591. Our users have rated United Airlines at 7.4/10.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Rosemont
Naperville
Orland Park
Oak Brook
New Buffalo
Joliet
Kenosha
Hammond
Aurora
Racine
Janesville
Elgin
Evanston
South Holland

Why use momondo?

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

It is quick and easy to find Great Falls to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

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

momondo does allow users to show only those flights to Chicago from Great Falls which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Chicago from Great Falls. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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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