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Cheap flights from Great Falls to Chicago from $158

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 12/7. 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

Logo
10:21 pm - 11:51 amGTF-ORD
12h 30m1 stop
Logo
8:15 am - 4:05 pmORD-GTF
8h 50m1 stop
$241
Find Deal
vie., sep. 19 - lun., sep. 22
Logo
10:21 pm - 10:34 amGTF-ORD
11h 13m2 stops
Logo
6:00 am - 4:05 pmORD-GTF
11h 05m1 stop
$263
Find Deal
vie., sep. 19 - lun., sep. 22
Logo
10:21 pm - 10:11 pmGTF-ORD
22h 50m3 stops
Logo
6:00 am - 4:05 pmORD-GTF
11h 05m1 stop
$289
Find Deal
vie., sep. 19 - lun., sep. 22
United Airlines Logo
2:31 pm - 11:59 pmGTF-ORD
8h 28m1 stop
United Airlines Logo
7:10 am - 1:26 pmORD-GTF
7h 16m1 stop
$326United Airlines
Find Deal
vie., oct. 10 - dom., oct. 12
Logo
10:27 pm - 11:49 amGTF-ORD
12h 22m1 stop
Logo
12:31 pm - 9:32 pmORD-GTF
34h 01m3 stops
$508
Find Deal
vie., oct. 10 - dom., oct. 12
Logo
10:27 pm - 11:49 amGTF-ORD
12h 22m1 stop
Logo
5:45 pm - 9:32 pmORD-GTF
28h 47m2 stops
$516
Find Deal
vie., oct. 10 - dom., oct. 12
United Airlines Logo
2:35 pm - 9:10 pmGTF-ORD
5h 35m1 stop
United Airlines Logo
7:10 am - 1:36 pmORD-GTF
7h 26m1 stop
$611United Airlines
Find Deal
mié., ago. 13 - dom., ago. 17
Delta Logo
11:43 am - 6:07 pmGTF-ORD
5h 24m1 stop
Delta Logo
9:10 am - 5:26 pmORD-GTF
9h 16m2 stops
$744Delta
Find Deal
jue., ago. 14 - lun., ago. 18
Alaska Airlines Logo
4:55 pm - 11:39 pmGTF-ORD
29h 44m2 stops
Alaska Airlines Logo
7:00 am - 4:13 pmORD-GTF
34h 13m2 stops
$886Alaska Airlines
Find Deal
jue., ago. 14 - lun., ago. 18
Alaska Airlines Logo
4:55 pm - 11:39 pmGTF-ORD
29h 44m2 stops
Alaska Airlines Logo
7:00 am - 4:13 pmORD-GTF
34h 13m2 stops
$1,035Alaska Airlines
Find Deal
mié., ago. 13 - dom., ago. 17

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
Oct 10
GTF2:31 pmGreat Falls
8h 28m
1 stop
ORD11:59 pmChicago O'Hare Intl
Oct 12
ORD7:10 amChicago O'Hare Intl
7h 16m
1 stop
GTF1:26 pmGreat Falls
$326
Find similar
United Airlines
Aug 7
GTF6:25 amGreat Falls
7h 40m
1 stop
ORD3:05 pmChicago O'Hare Intl
Aug 14
ORD5:00 amChicago O'Hare Intl
17h 13m
1 stop
GTF9:13 pmGreat Falls
$532
Find similar
United Airlines
Aug 7
GTF2:35 pmGreat Falls
5h 35m
1 stop
ORD9:10 pmChicago O'Hare Intl
Aug 14
ORD2:35 pmChicago O'Hare Intl
7h 38m
1 stop
GTF9:13 pmGreat Falls
$554
Find similar

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
Aug 14
GTF4:55 pmGreat Falls
29h 44m
2 stops
ORD11:39 pmChicago O'Hare Intl
Aug 18
ORD7:00 amChicago O'Hare Intl
34h 13m
2 stops
GTF4:13 pmGreat Falls
$886
Find similar
Alaska Airlines
Aug 13
GTF4:55 pmGreat Falls
29h 44m
2 stops
ORD11:39 pmChicago O'Hare Intl
Aug 17
ORD7:00 amChicago O'Hare Intl
34h 13m
2 stops
GTF4:13 pmGreat Falls
$1,035
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 julio 31, 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

vie. 9/19

10:21 pm-11:51 am

1 stop12h 30m

Chicago O'Hare Intl

lun. 9/22

8:15 am-4:05 pm

1 stop8h 50m

$241

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

vie. 9/19

10:21 pm-10:34 am

2 stops11h 13m

Chicago O'Hare Intl

lun. 9/22

6:00 am-4:05 pm

1 stop11h 05m

$263

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

vie. 9/19

10:21 pm-10:11 pm

3 stops22h 50m

Chicago O'Hare Intl

lun. 9/22

6:00 am-4:05 pm

1 stop11h 05m

$289

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

vie. 10/10

2:31 pm-11:59 pm

1 stop8h 28m

Chicago O'Hare Intl

dom. 10/12

7:10 am-1:26 pm

1 stop7h 16m

$326

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

vie. 10/10

10:27 pm-11:49 am

1 stop12h 22m

Chicago O'Hare Intl

dom. 10/12

12:31 pm-9:32 pm

3 stops34h 01m

$508

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

vie. 10/10

10:27 pm-11:49 am

1 stop12h 22m

Chicago O'Hare Intl

dom. 10/12

5:45 pm-9:32 pm

2 stops28h 47m

$516

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

mié. 8/13

2:35 pm-9:10 pm

1 stop5h 35m

Chicago O'Hare Intl

dom. 8/17

7:10 am-1:36 pm

1 stop7h 26m

$611

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

jue. 8/14

11:43 am-6:07 pm

1 stop5h 24m

Chicago O'Hare Intl

lun. 8/18

9:10 am-5:26 pm

2 stops9h 16m

$744

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

jue. 8/14

4:55 pm-11:39 pm

2 stops29h 44m

Chicago O'Hare Intl

lun. 8/18

7:00 am-4:13 pm

2 stops34h 13m

$886

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

mié. 8/13

4:55 pm-11:39 pm

2 stops29h 44m

Chicago O'Hare Intl

dom. 8/17

7:00 am-4:13 pm

2 stops34h 13m

$1,035

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 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 $661. 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 72% 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

$158

Fastest flight time

5h 24m

Direct flights

None
The best one-way flight to Chicago O'Hare Intl Airport from Great Falls in the past 72 hours is $158. The best round-trip flight deal from Great Falls to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $241.
The fastest flight from Great Falls to Chicago O'Hare Intl Airport takes 5h 24m
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

  • 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 24m, 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
DeltaPriceFrom $226Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Alaska AirlinesPriceFrom $430Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Chicago?

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