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O'Hare Intl

$137+ 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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
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Cheap 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 November 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$320
(Delta)

One-way from

$137
(Alaska Airlines)
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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Find 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 November 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:12 amGTF - ORD
2 stops36h 00mMultiple Airlines
Mon 12/812:59 pmORD - GTF
1 stop9h 36mMultiple Airlines
Deal found 11/14$371
This United Airlines deal was found by Cheapflights users on 11/14. 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 12/32:35 pmGTF - ORD
1 stop8h 24mUnited Airlines
Mon 12/82:40 pmORD - GTF
1 stop7h 52mUnited Airlines
Deal found 11/14$382
This Kiwi.com deal was found by Cheapflights users on 11/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:21 pmGTF - ORD
1 stop18h 20mAlaska Airlines
Tue 1/68:00 amORD - GTF
1 stop11h 41mAlaska Airlines
Deal found 11/15$392
This Alaska Airlines deal was found by Cheapflights users on 11/15. 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.
Wed 12/317:21 pmGTF - ORD
1 stop18h 20mAlaska Airlines
Mon 1/56:08 pmORD - GTF
1 stop25h 33mAlaska Airlines
Deal found 11/15$432
This Alaska Airlines deal was found by Cheapflights users on 11/14. 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.
Wed 12/37:35 pmGTF - ORD
1 stop9h 46mAlaska Airlines
Sun 12/78:00 amORD - GTF
1 stop11h 55mAlaska Airlines
Deal found 11/14$476
This Mytrip deal was found by Cheapflights users on 11/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:12 amGTF - ORD
3 stops27h 35mMultiple Airlines
Sun 12/79:14 pmORD - GTF
2 stops25h 21mMultiple Airlines
Deal found 11/14$477
This Delta deal was found by Cheapflights users on 11/15. 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.
Wed 12/311:11 pmGTF - ORD
2 stops7h 23mDelta
Tue 1/67:30 amORD - GTF
2 stops11h 00mDelta
Deal found 11/15$487
This United Airlines deal was found by Cheapflights users on 11/16. 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.
Mon 12/12:30 pmGTF - ORD
1 stop8h 28mUnited Airlines
Fri 12/57:10 amORD - GTF
1 stop7h 29mUnited Airlines
Deal found 11/16$496
This United Airlines deal was found by Cheapflights users on 11/14. 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 11/152:30 pmGTF - ORD
1 stop8h 29mUnited Airlines
Wed 11/192:40 pmORD - GTF
1 stop8h 59mUnited Airlines
Deal found 11/14$530

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 November 17, 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

Great Falls

Fly to

O'Hare Intl

Route

Depart

Return

Price

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 1/4

7:21 pm-6:29 am

1 stop10h 08m

Chicago O'Hare Intl

Mon 1/5

6:08 pm-6:41 pm

1 stop25h 33m

$353

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 1/4

7:21 pm-6:29 am

1 stop10h 08m

Chicago O'Hare Intl

Tue 1/6

8:58 pm-5:19 pm

2 stops21h 21m

$365

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 12/31

7:21 pm-2:41 pm

1 stop18h 20m

Chicago O'Hare Intl

Tue 1/6

8:00 am-6:41 pm

1 stop11h 41m

$392

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 12/31

7:21 pm-2:41 pm

1 stop18h 20m

Chicago O'Hare Intl

Mon 1/5

6:08 pm-6:41 pm

1 stop25h 33m

$432

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 1/3

7:21 pm-6:29 am

1 stop10h 08m

Chicago O'Hare Intl

Tue 1/6

8:58 pm-5:19 pm

2 stops21h 21m

$451

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 1/2

7:21 pm-6:29 am

1 stop10h 08m

Chicago O'Hare Intl

Tue 1/6

8:58 pm-5:19 pm

2 stops21h 21m

$451

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 1/1

7:21 pm-6:29 am

1 stop10h 08m

Chicago O'Hare Intl

Tue 1/6

8:00 am-6:41 pm

1 stop11h 41m

$457

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 12/3

7:35 pm-6:21 am

1 stop9h 46m

Chicago O'Hare Intl

Sun 12/7

8:00 am-6:55 pm

1 stop11h 55m

$476

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 12/31

1:11 pm-9:34 pm

2 stops7h 23m

Chicago O'Hare Intl

Tue 1/6

7:30 am-5:30 pm

2 stops11h 00m

$487

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 1/5

7:21 pm-6:29 am

1 stop10h 08m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Great Falls-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 17, 2025.
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
9,015 reviews

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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
9,015 reviews
United Airlines
7.4
Good
9,015 reviews

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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 10h 08m. Fly via Alaska Airlines to get the fastest option. Great Falls and Chicago O'Hare Intl Airport are separated by a distance of 1207 mi.

  • 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
Skokie
Des Plaines
Gurnee
Hoffman Estates
Beloit
Delavan
Elgin
Oak Brook
Elk Grove Village
Downers Grove
Rockford
Naperville
Orland Park
Bridgeview
Warrenville
Waukegan
Aurora
Racine

Browse thousands of different options on Cheapflights for your next trip

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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 November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$277Average$591FlexibilityNo cancel feeOn-time69%

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