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Cheap flights from Great Falls to Chicago from $332

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Chicago departing on 1/15. 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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0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
10:45 am - 10:43 am
GTF
-
ORD
22h 58m1 stop
Multiple Airlines Logo
10:41 pm - 4:28 pm
ORD
-
GTF
18h 47m1 stop
$332Multiple Airlines
Thu, Jan 15 - Sun, Jan 18
Alaska Airlines Logo
6:28 pm - 2:05 pm
GTF
-
ORD
18h 37m1 stop
Alaska Airlines Logo
7:00 am - 5:48 pm
ORD
-
GTF
11h 48m1 stop
$352Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
Multiple Airlines Logo
10:45 am - 9:24 pm
GTF
-
ORD
33h 39m2 stops
Multiple Airlines Logo
10:41 pm - 4:28 pm
ORD
-
GTF
18h 47m1 stop
$369Multiple Airlines
Thu, Jan 15 - Sun, Jan 18
Alaska Airlines Logo
6:28 pm - 1:11 pm
GTF
-
ORD
17h 43m2 stops
Alaska Airlines Logo
7:00 am - 5:48 pm
ORD
-
GTF
11h 48m1 stop
$417Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
Alaska Airlines Logo
6:28 pm - 11:56 pm
GTF
-
ORD
28h 28m1 stop
Alaska Airlines Logo
2:07 pm - 4:17 pm
ORD
-
GTF
27h 10m2 stops
$452Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
6:15 am - 1:19 pm
GTF
-
ORD
6h 04m1 stop
United Airlines Logo
5:50 pm - 10:46 pm
ORD
-
GTF
5h 56m1 stop
$484United Airlines
Mon, Dec 29 - Fri, Jan 2
Alaska Airlines Logo
6:28 pm - 1:11 pm
GTF
-
ORD
17h 43m2 stops
Alaska Airlines Logo
2:07 pm - 4:17 pm
ORD
-
GTF
27h 10m2 stops
$517Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
Alaska Airlines Logo
5:59 pm - 1:10 pm
GTF
-
ORD
18h 11m2 stops
Alaska Airlines Logo
2:06 pm - 5:19 pm
ORD
-
GTF
28h 13m2 stops
$524Alaska Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
6:15 am - 6:21 am
GTF
-
ORD
23h 06m2 stops
United Airlines Logo
5:50 pm - 10:46 pm
ORD
-
GTF
5h 56m1 stop
$666United Airlines
Mon, Dec 29 - Fri, Jan 2
United Airlines Logo
6:15 am - 4:54 pm
GTF
-
ORD
9h 39m2 stops
United Airlines Logo
12:55 pm - 10:46 pm
ORD
-
GTF
10h 51m2 stops
$1,029United Airlines
Mon, Dec 29 - Fri, Jan 2

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
Feb 14
GTF6:28 pmGreat Falls
18h 37m
1 stop
ORD2:05 pmChicago O'Hare Intl
Feb 18
ORD7:00 amChicago O'Hare Intl
11h 48m
1 stop
GTF5:48 pmGreat Falls
$352
Find similar
Alaska Airlines
Feb 14
GTF6:28 pmGreat Falls
17h 43m
2 stops
ORD1:11 pmChicago O'Hare Intl
Feb 18
ORD7:00 amChicago O'Hare Intl
11h 48m
1 stop
GTF5:48 pmGreat Falls
$417
Find similar
Alaska Airlines
Feb 14
GTF6:28 pmGreat Falls
28h 28m
1 stop
ORD11:56 pmChicago O'Hare Intl
Feb 18
ORD2:07 pmChicago O'Hare Intl
27h 10m
2 stops
GTF4:17 pmGreat Falls
$452
Find similar

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
Dec 29
GTF6:15 amGreat Falls
6h 04m
1 stop
ORD1:19 pmChicago O'Hare Intl
Jan 2
ORD5:50 pmChicago O'Hare Intl
5h 56m
1 stop
GTF10:46 pmGreat Falls
$484
Find similar
United Airlines
Dec 29
GTF6:15 amGreat Falls
23h 06m
2 stops
ORD6:21 amChicago O'Hare Intl
Jan 2
ORD5:50 pmChicago O'Hare Intl
5h 56m
1 stop
GTF10:46 pmGreat Falls
$666
Find similar
United Airlines
Dec 29
GTF6:15 amGreat Falls
9h 39m
2 stops
ORD4:54 pmChicago O'Hare Intl
Jan 2
ORD12:55 pmChicago O'Hare Intl
10h 51m
2 stops
GTF10:46 pmGreat Falls
$1,029
Find similar

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 December 14, 2025.
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

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 1/15

10:45 am-10:43 am

1 stop22h 58m

Chicago O'Hare Intl

Sun 1/18

10:41 pm-4:28 pm

1 stop18h 47m

$332

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 2/14

6:28 pm-2:05 pm

1 stop18h 37m

Chicago O'Hare Intl

Wed 2/18

7:00 am-5:48 pm

1 stop11h 48m

$352

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 1/15

10:45 am-9:24 pm

2 stops33h 39m

Chicago O'Hare Intl

Sun 1/18

10:41 pm-4:28 pm

1 stop18h 47m

$369

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 2/14

6:28 pm-1:11 pm

2 stops17h 43m

Chicago O'Hare Intl

Wed 2/18

7:00 am-5:48 pm

1 stop11h 48m

$417

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 2/14

6:28 pm-11:56 pm

1 stop28h 28m

Chicago O'Hare Intl

Wed 2/18

2:07 pm-4:17 pm

2 stops27h 10m

$452

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 12/29

6:15 am-1:19 pm

1 stop6h 04m

Chicago O'Hare Intl

Fri 1/2

5:50 pm-10:46 pm

1 stop5h 56m

$484

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 2/14

6:28 pm-1:11 pm

2 stops17h 43m

Chicago O'Hare Intl

Wed 2/18

2:07 pm-4:17 pm

2 stops27h 10m

$517

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 1/15

5:59 pm-1:10 pm

2 stops18h 11m

Chicago O'Hare Intl

Sun 1/18

2:06 pm-5:19 pm

2 stops28h 13m

$524

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 12/29

6:15 am-6:21 am

2 stops23h 06m

Chicago O'Hare Intl

Fri 1/2

5:50 pm-10:46 pm

1 stop5h 56m

$666

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 12/29

6:15 am-4:54 pm

2 stops9h 39m

Chicago O'Hare Intl

Fri 1/2

12:55 pm-10:46 pm

2 stops10h 51m

$1,029

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 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 Tuesday when prices can be found for as low as $363. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday 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 $661.

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

Flying to Chicago O'Hare Intl Airport from Great Falls in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $430 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $660. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 flights?

There are 3 cabin classes available to choose from on Great Falls to Chicago O'Hare Intl 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

Fastest flight time

6h 04m

Direct flights

None
The fastest flight from Great Falls to Chicago O'Hare Intl Airport takes 6h 04m
There are no direct flights from Great Falls to Chicago O'Hare Intl Airport. There are no popular flight routes from Great Falls to Chicago O'Hare Intl Airport.
Search flight deals

  • 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 6h 04m, 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 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
United AirlinesPriceFrom $277Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights

Traveling to a place near Chicago?

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

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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