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Cheap flights from Great Falls to Chicago from $215

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 8/8. 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

Enter your travel dates to find the best prices.
Delta Logo
6:19 pm - 8:05 am
GTF
-
ORD
12h 46m
2 stops
Delta Logo
7:45 am - 12:40 pm
ORD
-
GTF
5h 55m
1 stop
$324Delta
Sat, Jun 6 - Tue, Jun 9
Delta Logo
6:19 pm - 8:05 am
GTF
-
ORD
12h 46m
2 stops
Delta Logo
7:45 am - 12:40 pm
ORD
-
GTF
5h 55m
1 stop
$334Delta
Sat, Jun 6 - Tue, Jun 9
Alaska Airlines Logo
6:52 pm - 6:20 am
GTF
-
ORD
10h 28m
1 stop
Alaska Airlines Logo
6:00 am - 4:29 pm
ORD
-
GTF
11h 29m
1 stop
$363Alaska Airlines
Sat, Jun 6 - Wed, Jun 10
Delta Logo
1:07 pm - 9:50 pm
GTF
-
ORD
7h 43m
1 stop
Delta Logo
7:45 am - 12:27 pm
ORD
-
GTF
5h 42m
1 stop
$378Delta
Wed, May 27 - Sat, May 30
Delta Logo
1:07 pm - 9:50 pm
GTF
-
ORD
7h 43m
1 stop
Delta Logo
1:44 pm - 10:26 pm
ORD
-
GTF
9h 42m
2 stops
$384Delta
Wed, May 27 - Sat, May 30
Alaska Airlines Logo
6:52 pm - 6:20 am
GTF
-
ORD
10h 28m
1 stop
Alaska Airlines Logo
7:40 am - 6:12 pm
ORD
-
GTF
11h 32m
1 stop
$403Alaska Airlines
Sun, May 24 - Wed, May 27
Alaska Airlines Logo
6:52 pm - 6:20 am
GTF
-
ORD
10h 28m
1 stop
Alaska Airlines Logo
6:00 am - 6:12 pm
ORD
-
GTF
13h 12m
1 stop
$408Alaska Airlines
Fri, Jun 5 - Sun, Jun 7
Delta Logo
6:19 pm - 8:05 am
GTF
-
ORD
12h 46m
2 stops
Delta Logo
6:35 am - 5:44 pm
ORD
-
GTF
12h 09m
2 stops
$414Delta
Sat, Jun 6 - Tue, Jun 9
Alaska Airlines Logo
6:52 pm - 6:20 am
GTF
-
ORD
10h 28m
1 stop
Alaska Airlines Logo
5:44 pm - 4:29 pm
ORD
-
GTF
23h 45m
1 stop
$418Alaska Airlines
Sat, Jun 6 - Tue, Jun 9
Delta Logo
5:40 am - 11:52 am
GTF
-
ORD
5h 12m
1 stop
Delta Logo
8:10 am - 5:39 pm
ORD
-
GTF
10h 29m
2 stops
$419Delta
Tue, May 26 - Sat, May 30

Delta flights from Great Falls to Chicago O'Hare Intl Airport

Our best Delta deals on Great Falls to Chicago O'Hare Intl Airport flight tickets
Delta
Jun 6
GTF6:19 pmGreat Falls
12h 46m
2 stops
ORD8:05 amChicago O'Hare Intl
Jun 9
ORD7:45 amChicago O'Hare Intl
5h 55m
1 stop
GTF12:40 pmGreat Falls
$324
Delta
Jun 6
GTF6:19 pmGreat Falls
12h 46m
2 stops
ORD8:05 amChicago O'Hare Intl
Jun 9
ORD7:45 amChicago O'Hare Intl
5h 55m
1 stop
GTF12:40 pmGreat Falls
$334
Delta
May 27
GTF1:07 pmGreat Falls
7h 43m
1 stop
ORD9:50 pmChicago O'Hare Intl
May 30
ORD7:45 amChicago O'Hare Intl
5h 42m
1 stop
GTF12:27 pmGreat Falls
$378

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
Jun 6
GTF6:52 pmGreat Falls
10h 28m
1 stop
ORD6:20 amChicago O'Hare Intl
Jun 10
ORD6:00 amChicago O'Hare Intl
11h 29m
1 stop
GTF4:29 pmGreat Falls
$363
Alaska Airlines
May 24
GTF6:52 pmGreat Falls
10h 28m
1 stop
ORD6:20 amChicago O'Hare Intl
May 27
ORD7:40 amChicago O'Hare Intl
11h 32m
1 stop
GTF6:12 pmGreat Falls
$403
Alaska Airlines
Jun 5
GTF6:52 pmGreat Falls
10h 28m
1 stop
ORD6:20 amChicago O'Hare Intl
Jun 7
ORD6:00 amChicago O'Hare Intl
13h 12m
1 stop
GTF6:12 pmGreat Falls
$408

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 May 13, 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 6/6

6:19 pm-8:05 am

2 stops12h 46m

Chicago O'Hare Intl

Tue 6/9

7:45 am-12:40 pm

1 stop5h 55m

$324

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 6/6

6:19 pm-8:05 am

2 stops12h 46m

Chicago O'Hare Intl

Tue 6/9

7:45 am-12:40 pm

1 stop5h 55m

$334

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 6/6

6:52 pm-6:20 am

1 stop10h 28m

Chicago O'Hare Intl

Wed 6/10

6:00 am-4:29 pm

1 stop11h 29m

$363
Quickest round-trip

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 5/27

1:07 pm-9:50 pm

1 stop7h 43m

Chicago O'Hare Intl

Sat 5/30

7:45 am-12:27 pm

1 stop5h 42m

$378

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 5/27

1:07 pm-9:50 pm

1 stop7h 43m

Chicago O'Hare Intl

Sat 5/30

1:44 pm-10:26 pm

2 stops9h 42m

$384

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 5/24

6:52 pm-6:20 am

1 stop10h 28m

Chicago O'Hare Intl

Wed 5/27

7:40 am-6:12 pm

1 stop11h 32m

$403

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 6/5

6:52 pm-6:20 am

1 stop10h 28m

Chicago O'Hare Intl

Sun 6/7

6:00 am-6:12 pm

1 stop13h 12m

$408

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 6/6

6:19 pm-8:05 am

2 stops12h 46m

Chicago O'Hare Intl

Tue 6/9

6:35 am-5:44 pm

2 stops12h 09m

$414

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 6/6

6:52 pm-6:20 am

1 stop10h 28m

Chicago O'Hare Intl

Tue 6/9

5:44 pm-4:29 pm

1 stop23h 45m

$418

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 5/26

5:40 am-11:52 am

1 stop5h 12m

Chicago O'Hare Intl

Sat 5/30

8:10 am-5:39 pm

2 stops10h 29m

$419

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 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

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

$378

Fastest flight time

3h 18m

Direct flights

Sun
The best flight deal from Great Falls to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $378
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 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
7.9
8,450 reviews
Search Delta flights
United AirlinesPriceFrom $277Free CancellationRating
7.4
9,706 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
Rosemont
Naperville
Orland Park
New Buffalo
Oak Brook
Kenosha
Joliet
Aurora
Racine
Janesville
Hammond
Evanston
Elgin
Tinley Park

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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