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Cheap flights from Chicago O'Hare Intl Airport to Great Falls from $134

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Great Falls departing on 12/8. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Great Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:30 am - 5:30 pmORD-GTF
13h 00m2 stops
Delta Logo
1:15 pm - 9:52 pmGTF-ORD
7h 37m1 stop
$270Delta
Find Deal
Tue, Jan 13 - Sat, Jan 17
Delta Logo
9:55 am - 10:30 pmORD-GTF
13h 35m2 stops
Delta Logo
5:30 am - 5:54 pmGTF-ORD
11h 24m2 stops
$275Delta
Find Deal
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
1:55 pm - 9:53 pmORD-GTF
8h 58m1 stop
United Airlines Logo
2:29 pm - 9:15 pmGTF-ORD
5h 46m1 stop
$285United Airlines
Find Deal
Tue, Jan 13 - Sat, Jan 17
Delta Logo
7:30 am - 5:30 pmORD-GTF
11h 00m2 stops
Delta Logo
6:10 pm - 10:05 amGTF-ORD
14h 55m2 stops
$312Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2
Alaska Airlines Logo
8:00 am - 5:19 pmORD-GTF
10h 19m1 stop
Alaska Airlines Logo
5:59 pm - 11:50 pmGTF-ORD
28h 51m1 stop
$323Alaska Airlines
Find Deal
Thu, Jan 29 - Mon, Feb 2
Delta Logo
7:20 am - 12:31 pmORD-GTF
6h 11m1 stop
Delta Logo
6:10 pm - 8:39 amGTF-ORD
13h 29m2 stops
$334Delta
Find Deal
Thu, Dec 4 - Mon, Dec 8
Alaska Airlines Logo
7:00 am - 3:20 pmORD-GTF
9h 20m1 stop
Alaska Airlines Logo
4:00 pm - 11:58 pmGTF-ORD
6h 58m1 stop
$354Alaska Airlines
Find Deal
Fri, Apr 17 - Mon, Apr 20
Alaska Airlines Logo
3:35 pm - 6:55 pmORD-GTF
28h 20m1 stop
Alaska Airlines Logo
7:35 pm - 2:39 pmGTF-ORD
18h 04m1 stop
$357Alaska Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Alaska Airlines Logo
8:00 am - 6:55 pmORD-GTF
11h 55m1 stop
Alaska Airlines Logo
5:59 pm - 11:37 pmGTF-ORD
28h 38m2 stops
$359Alaska Airlines
Find Deal
Sat, Dec 13 - Sat, Jan 10
Delta Logo
7:30 am - 12:33 pmORD-GTF
30h 03m2 stops
Delta Logo
6:10 pm - 10:05 amGTF-ORD
14h 55m2 stops
$360Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2

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

Our best Delta deals on Chicago O'Hare Intl Airport to Great Falls flight tickets
Delta
Jan 13
ORD5:30 amChicago O'Hare Intl
13h 00m
2 stops
GTF5:30 pmGreat Falls
Jan 17
GTF1:15 pmGreat Falls
7h 37m
1 stop
ORD9:52 pmChicago O'Hare Intl
$270
Find similar
Delta
Jan 13
ORD9:55 amChicago O'Hare Intl
13h 35m
2 stops
GTF10:30 pmGreat Falls
Jan 17
GTF5:30 amGreat Falls
11h 24m
2 stops
ORD5:54 pmChicago O'Hare Intl
$275
Find similar
Delta
Jan 29
ORD7:30 amChicago O'Hare Intl
11h 00m
2 stops
GTF5:30 pmGreat Falls
Feb 2
GTF6:10 pmGreat Falls
14h 55m
2 stops
ORD10:05 amChicago O'Hare Intl
$312
Find similar

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

Our best United Airlines deals on Chicago O'Hare Intl Airport to Great Falls flight tickets
United Airlines
Jan 13
ORD1:55 pmChicago O'Hare Intl
8h 58m
1 stop
GTF9:53 pmGreat Falls
Jan 17
GTF2:29 pmGreat Falls
5h 46m
1 stop
ORD9:15 pmChicago O'Hare Intl
$285
Find similar
United Airlines
Jan 13
ORD7:00 amChicago O'Hare Intl
7h 48m
1 stop
GTF1:48 pmGreat Falls
Jan 17
GTF2:29 pmGreat Falls
25h 41m
2 stops
ORD5:10 pmChicago O'Hare Intl
$437
Find similar
United Airlines
Jan 1
ORD8:45 amChicago O'Hare Intl
15h 01m
1 stop
GTF10:46 pmGreat Falls
Jan 8
GTF2:29 pmGreat Falls
8h 29m
1 stop
ORD11:58 pmChicago O'Hare Intl
$509
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Great Falls 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 November 19, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Great Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Tue 1/13

5:30 am-5:30 pm

2 stops13h 00m

Great Falls

Sat 1/17

1:15 pm-9:52 pm

1 stop7h 37m

$270

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Tue 1/13

9:55 am-10:30 pm

2 stops13h 35m

Great Falls

Sat 1/17

5:30 am-5:54 pm

2 stops11h 24m

$275

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Tue 1/13

1:55 pm-9:53 pm

1 stop8h 58m

Great Falls

Sat 1/17

2:29 pm-9:15 pm

1 stop5h 46m

$285

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Thu 1/29

7:30 am-5:30 pm

2 stops11h 00m

Great Falls

Mon 2/2

6:10 pm-10:05 am

2 stops14h 55m

$312

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Thu 1/29

8:00 am-5:19 pm

1 stop10h 19m

Great Falls

Mon 2/2

5:59 pm-11:50 pm

1 stop28h 51m

$323

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Thu 12/4

7:20 am-12:31 pm

1 stop6h 11m

Great Falls

Mon 12/8

6:10 pm-8:39 am

2 stops13h 29m

$334

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Fri 4/17

7:00 am-3:20 pm

1 stop9h 20m

Great Falls

Mon 4/20

4:00 pm-11:58 pm

1 stop6h 58m

$354

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Thu 12/4

3:35 pm-6:55 pm

1 stop28h 20m

Great Falls

Mon 12/8

7:35 pm-2:39 pm

1 stop18h 04m

$357

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Sat 12/13

8:00 am-6:55 pm

1 stop11h 55m

Great Falls

Sat 1/10

5:59 pm-11:37 pm

2 stops28h 38m

$359

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Thu 1/29

7:30 am-12:33 pm

2 stops30h 03m

Great Falls

Mon 2/2

6:10 pm-10:05 am

2 stops14h 55m

$360

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 Great Falls from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Great Falls

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 Great Falls?

The cheapest day to depart on your flight to Great Falls is on a Friday when prices can be found for as low as $397. 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 Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $676.

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

According to our data, the cheapest time of day to fly to Great Falls is in the afternoon. momondo users have found flights departing from Chicago O'Hare Intl Airport to Great Falls in the afternoon for as low as $398. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $658 on average. Flights to Great Falls from Chicago O'Hare Intl Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

There are 2 cabin classes available to choose from on Chicago O'Hare Intl to Great Falls 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 Chicago O'Hare Intl Airport to Great Falls flights?

You could potentially save up to 41% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Great Falls flight.

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

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

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

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

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Great Falls. There are no popular flight routes from Chicago O'Hare Intl Airport to Great Falls.
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  • How far is Chicago O'Hare Intl to Great Falls by plane?

    There are 1203.7 mi between Chicago O'Hare Intl and Great Falls. 6h 06m is a normal flight duration for this route.

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

    Prices for flights from Chicago O'Hare Intl Airport to Great Falls Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Great Falls Airport.

  • What documentation or ID do you need to fly to Great Falls Airport?

    The necessary travel and health documents for your Great Falls Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Great Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,025 reviews
Search United Airlines flights

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Great Falls from Chicago.

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

Flights from Chicago to Great Falls 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 Chicago to Great Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Great Falls from Chicago.

I’m not ready to book a flight from Chicago to Great Falls right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to Great Falls now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Great Falls and let you know when they change.

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