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O'Hare Intl

$159+ Cheap flights from Great Falls (GTF) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Great Falls to O'Hare Intl

Cheapest flights from Great Falls to O'Hare Intl
Explore the most affordable flight options available from Great Falls to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/174:57 pm
GTF
-
ORD
1 stop29h 59m
Alaska Airlines
Mon 2/237:00 am
ORD
-
GTF
1 stop10h 17m
Alaska Airlines
Deal found 1/19$305
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/46:41 am
GTF
-
ORD
1 stop5h 43m
United Airlines
Sun 2/87:00 am
ORD
-
GTF
1 stop7h 48m
United Airlines
Deal found 1/20$318
This United Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/42:30 pm
GTF
-
ORD
1 stop5h 47m
United Airlines
Sat 4/112:10 pm
ORD
-
GTF
1 stop8h 07m
United Airlines
Deal found 1/18$373
This Alaska Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/164:57 pm
GTF
-
ORD
1 stop20h 14m
Alaska Airlines
Mon 2/237:00 am
ORD
-
GTF
1 stop10h 17m
Alaska Airlines
Deal found 1/18$385
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/201:15 pm
GTF
-
ORD
1 stop7h 37m
Delta
Fri 2/277:15 am
ORD
-
GTF
1 stop6h 15m
Delta
Deal found 1/21$391
This Alaska Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/204:57 pm
GTF
-
ORD
2 stops19h 14m
Alaska Airlines
Fri 2/275:29 pm
ORD
-
GTF
1 stop25h 19m
Alaska Airlines
Deal found 1/21$412
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:20 pm
GTF
-
ORD
2 stops24h 23m
Delta
Sun 5/247:15 am
ORD
-
GTF
1 stop6h 08m
Delta
Deal found 1/19$413
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:30 pm
GTF
-
ORD
Nonstop3h 16m
United Airlines
Mon 7/137:15 am
ORD
-
GTF
1 stop7h 14m
United Airlines
Deal found 1/20$414

Find flight deals from Great Falls to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$305
(Alaska Airlines)

One-way from

$159
(Delta)
Provider with most accurate pricing for Great Falls-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for Great Falls-Chicago O'Hare Intl flights.
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From Great Falls to Chicago O'Hare Intl
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One-way flight from Great Falls to Chicago O'Hare Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls to O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated January 21, 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

Great Falls

Fly to

O'Hare Intl

Route

Depart

Return

Price

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 2/4

6:41 am-1:24 pm

1 stop5h 43m

Chicago O'Hare Intl

Sun 2/8

7:00 am-1:48 pm

1 stop7h 48m

$318

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 2/17

4:57 pm-11:56 pm

1 stop29h 59m

Chicago O'Hare Intl

Mon 2/23

5:29 pm-4:17 pm

1 stop23h 48m

$352

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 2/20

1:15 pm-9:52 pm

1 stop7h 37m

Chicago O'Hare Intl

Fri 2/27

7:15 am-12:30 pm

1 stop6h 15m

$391

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 2/20

4:57 pm-1:11 pm

2 stops19h 14m

Chicago O'Hare Intl

Fri 2/27

5:29 pm-5:48 pm

1 stop25h 19m

$412

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 5/21

6:20 pm-7:43 pm

2 stops24h 23m

Chicago O'Hare Intl

Sun 5/24

7:15 am-12:23 pm

1 stop6h 08m

$413

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 7/9

2:25 pm-10:25 pm

1 stop7h 00m

Chicago O'Hare Intl

Mon 7/13

7:15 am-1:29 pm

1 stop7h 14m

$423

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 2/6

1:12 pm-9:52 pm

1 stop7h 40m

$159

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 1/28

6:10 pm-8:42 am

2 stops13h 32m

$220

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 1/26

5:18 pm-5:52 pm

3 stops47h 34m

$264

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 1/26

5:30 am-12:41 pm

1 stop6h 11m

$265

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 15 results
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Compare providers for flights from Great Falls to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Great Falls to O'Hare Intl in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Great Falls-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Great Falls-Chicago O'Hare Intl Airport flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Great Falls-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Great Falls to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Great Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated January 21, 2026.
Peruse reviews from past customers who have flown with United Airlines from Great Falls to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Great Falls to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Great Falls to Chicago O'Hare Intl?

    Located just 3.5 mi from the city center, Great Falls is the airport most travelers will use when flying to Chicago O'Hare Intl from Great Falls. Booking flights from Great Falls (GTF) to Chicago O'Hare Intl should be relatively easy as there are 0 daily outbound flights to Chicago O'Hare Intl from 1 airline.

  • How long is the flight from Great Falls to Chicago O'Hare Intl Airport?

    There are many flights that can get you from Great Falls to Chicago O'Hare Intl Airport in 5h 43m. Fly via United Airlines, Alaska Airlines, or Delta to get the fastest option. Great Falls and Chicago O'Hare Intl Airport are separated by a distance of 1207 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Great Falls to Chicago O'Hare Intl Airport round-trip?

    Currently priced at $277, United Airlines will fly you from Great Falls to Chicago O'Hare Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.

  • Can I find deals for flights from Great Falls to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Great Falls to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to O'Hare Intl.

  • Can I find deals for business class flights from Great Falls to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Great Falls to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Naperville
Gurnee
Elgin
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Libertyville
Lake Geneva
Bridgeview
Kenosha
Warrenville
Waukegan
Aurora

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Top airline flying from Great Falls to O'Hare Intl

Discover the top airline that operate flights from Great Falls to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$277Average$591FlexibilityNo cancel feeOn-time69%

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