Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Great Falls to Chicago from $245

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 9/3. 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 - 10:46 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 21m1 stop Denver Intl
United Airlines Logo
2:32 pm - 9:12 pmORD  Chicago O'Hare Intl-GTF Great Falls
7h 40m1 stop Denver Intl
$328United Airlines
Fri, Sep 4 - Fri, Sep 11
United Airlines Logo
2:25 pm - 10:00 pmGTF  Great Falls-ORD Chicago O'Hare Intl
6h 35m1 stop Denver Intl
United Airlines Logo
5:55 am - 1:29 pmORD  Chicago O'Hare Intl-GTF Great Falls
8h 34m1 stop Denver Intl
$328United Airlines
Thu, Sep 10 - Wed, Sep 16
Delta Logo
1:18 pm - 10:00 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 42m1 stop Salt Lake City
Delta Logo
7:35 am - 12:38 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 03m1 stop Salt Lake City
$328Delta
Wed, Nov 4 - Sun, Nov 8
Delta Logo
1:13 pm - 9:47 pmGTF  Great Falls-ORD Chicago O'Hare Intl
7h 34m1 stop Salt Lake City
Delta Logo
7:35 am - 12:31 pmORD  Chicago O'Hare Intl-GTF Great Falls
5h 56m1 stop Salt Lake City
$328Delta
Tue, Dec 8 - Mon, Dec 14
Alaska Airlines Logo
4:57 pm - 5:40 amGTF  Great Falls-ORD Chicago O'Hare Intl
11h 43m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 4:17 pmORD  Chicago O'Hare Intl-GTF Great Falls
10h 17m1 stop Seattle/Tacoma Intl
$328Alaska Airlines
Mon, Nov 9 - Sat, Nov 14
Alaska Airlines Logo
5:19 pm - 6:20 amGTF  Great Falls-ORD Chicago O'Hare Intl
12h 01m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
8:00 am - 4:39 pmORD  Chicago O'Hare Intl-GTF Great Falls
9h 39m1 stop Seattle/Tacoma Intl
$328Alaska Airlines
Fri, Sep 25 - Fri, Oct 2
United Airlines Logo
2:37 pm - 9:52 pmGTF  Great Falls-ORD Chicago O'Hare Intl
6h 15m1 stop Denver Intl
United Airlines Logo
4:20 pm - 9:22 pmORD  Chicago O'Hare Intl-GTF Great Falls
6h 02m1 stop Denver Intl
$328United Airlines
Thu, Oct 22 - Sat, Oct 24
United Airlines Logo
2:25 pm - 9:59 pmGTF  Great Falls-ORD Chicago O'Hare Intl
6h 34m1 stop Denver Intl
United Airlines Logo
6:00 am - 1:29 pmORD  Chicago O'Hare Intl-GTF Great Falls
8h 29m1 stop Denver Intl
$328United Airlines
Sat, Sep 5 - Sat, Sep 12
Delta Logo
5:35 am - 12:03 pmGTF  Great Falls-ORD Chicago O'Hare Intl
5h 28m1 stop Salt Lake City
Delta Logo
7:35 am - 12:31 pmORD  Chicago O'Hare Intl-GTF Great Falls
5h 56m1 stop Salt Lake City
$328Delta
Mon, Nov 9 - Sat, Nov 14
Alaska Airlines Logo
5:25 pm - 8:28 pmGTF  Great Falls-ORD Chicago O'Hare Intl
26h 03m2 stops Seattle/Tacoma Intl Spokane
Alaska Airlines Logo
8:00 am - 4:39 pmORD  Chicago O'Hare Intl-GTF Great Falls
9h 39m1 stop Seattle/Tacoma Intl
$464Alaska Airlines
Sat, Sep 5 - Sat, Sep 12

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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 4
GTF2:25 pmGreat Falls
6h 35m
1 stop
ORD10:00 pmChicago O'Hare Intl
Sep 11
ORD1:30 pmChicago O'Hare Intl
8h 42m
1 stop
GTF9:12 pmGreat Falls
$328
United Airlines
Oct 7
GTF2:37 pmGreat Falls
7h 09m
1 stop
ORD10:46 pmChicago O'Hare Intl
Oct 11
ORD7:00 amChicago O'Hare Intl
7h 41m
1 stop
GTF1:41 pmGreat Falls
$381
United Airlines
Aug 28
GTF2:25 pmGreat Falls
6h 04m
1 stop
ORD9:29 pmChicago O'Hare Intl
Aug 30
ORD7:00 amChicago O'Hare Intl
7h 29m
1 stop
GTF1:29 pmGreat Falls
$383

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
Nov 9
GTF1:13 pmGreat Falls
7h 34m
1 stop
ORD9:47 pmChicago O'Hare Intl
Nov 14
ORD5:30 amChicago O'Hare Intl
13h 11m
2 stops
GTF5:41 pmGreat Falls
$334
Delta
Nov 9
GTF1:13 pmGreat Falls
9h 46m
2 stops
ORD11:59 pmChicago O'Hare Intl
Nov 14
ORD5:30 amChicago O'Hare Intl
13h 11m
2 stops
GTF5:41 pmGreat Falls
$339
Delta
Oct 10
GTF1:18 pmGreat Falls
7h 42m
1 stop
ORD10:00 pmChicago O'Hare Intl
Oct 17
ORD7:35 amChicago O'Hare Intl
6h 03m
1 stop
GTF12:38 pmGreat Falls
$358

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 August 12, 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 Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Fri 9/4

2:25 pm-10:46 pm

1 stop7h 21m

Chicago O'Hare Intl

Fri 9/11

2:32 pm-9:12 pm

1 stop7h 40m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Thu 9/10

2:25 pm-10:00 pm

1 stop6h 35m

Chicago O'Hare Intl

Wed 9/16

5:55 am-1:29 pm

1 stop8h 34m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Wed 11/4

1:18 pm-10:00 pm

1 stop7h 42m

Chicago O'Hare Intl

Sun 11/8

7:35 am-12:38 pm

1 stop6h 03m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Tue 12/8

1:13 pm-9:47 pm

1 stop7h 34m

Chicago O'Hare Intl

Mon 12/14

7:35 am-12:31 pm

1 stop5h 56m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Mon 11/9

4:57 pm-5:40 am

1 stop11h 43m

Chicago O'Hare Intl

Sat 11/14

7:00 am-4:17 pm

1 stop10h 17m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Fri 9/25

5:19 pm-6:20 am

1 stop12h 01m

Chicago O'Hare Intl

Fri 10/2

8:00 am-4:39 pm

1 stop9h 39m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Thu 10/22

2:37 pm-9:52 pm

1 stop6h 15m

Chicago O'Hare Intl

Sat 10/24

4:20 pm-9:22 pm

1 stop6h 02m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Sat 9/5

2:25 pm-9:59 pm

1 stop6h 34m

Chicago O'Hare Intl

Sat 9/12

6:00 am-1:29 pm

1 stop8h 29m

$328
Quickest round-trip

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Mon 11/9

5:35 am-12:03 pm

1 stop5h 28m

Chicago O'Hare Intl

Sat 11/14

7:35 am-12:31 pm

1 stop5h 56m

$328

Great FallsChicago

GTF Great Falls - ORD Chicago O'Hare Intl

GTFORD

Great Falls

Sat 9/5

5:25 pm-8:28 pm

2 stops26h 03m

Chicago O'Hare Intl

Sat 9/12

8:00 am-4:39 pm

1 stop9h 39m

$464

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 $576. 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 $603.

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 are 3 cabin classes 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 75% 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

$448

Fastest flight time

5h 15m

Direct flights

None
The best one-way flight to Chicago O'Hare Intl Airport from Great Falls in the past 72 hours is $448. The best round-trip flight deal from Great Falls to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $478.
The fastest flight from Great Falls to Chicago O'Hare Intl Airport takes 5h 15m
There are no direct flights from Great Falls to Chicago O'Hare Intl Airport. Popular non-direct route for this connection is Great Falls Airport - Chicago O'Hare Intl Airport.
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 5h 15m, 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 $270Free CancellationRating
7.8
8,505 reviews
Search Delta flights
United AirlinesPriceFrom $300Free CancellationRating
7.4
10,111 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
Schaumburg
Merrillville
Rockford
South Haven
Gurnee
Rosemont
Oak Brook
Orland Park
Naperville
Joliet
New Buffalo
Kenosha
Hammond
Racine
Aurora
Janesville
Elgin
South Holland
Evanston

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.

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 9/11
Fri 9/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago