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O'Hare Intl

$272+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
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 June 27, 2026.

This United Airlines deal was found by Cheapflights users on 6/25. 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 9/122:25 pm
GTF
-
ORD
1 stop6h 05m
United Airlines
Sat 9/197:00 am
ORD
-
GTF
1 stop7h 29m
United Airlines
Deal found 6/25$318
This Delta deal was found by Cheapflights users on 6/26. 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.
Mon 10/125:30 am
GTF
-
ORD
1 stop5h 55m
Delta
Tue 10/203:50 pm
ORD
-
GTF
2 stops8h 03m
Delta
Deal found 6/26$324
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Fri 9/112:25 pm
GTF
-
ORD
1 stop6h 35m
United Airlines
Fri 9/185:55 am
ORD
-
GTF
1 stop8h 34m
United Airlines
Deal found 6/25$347
This Delta deal was found by Cheapflights users on 6/25. 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 10/11:15 pm
GTF
-
ORD
2 stops9h 44m
Delta
Mon 10/57:45 am
ORD
-
GTF
1 stop5h 50m
Delta
Deal found 6/25$354
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Fri 8/212:25 pm
GTF
-
ORD
1 stop6h 04m
United Airlines
Sun 8/235:55 am
ORD
-
GTF
1 stop8h 34m
United Airlines
Deal found 6/23$358
This United Airlines deal was found by Cheapflights users on 6/25. 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 9/102:25 pm
GTF
-
ORD
1 stop7h 21m
United Airlines
Thu 9/175:55 am
ORD
-
GTF
1 stop8h 34m
United Airlines
Deal found 6/25$368
This Delta deal was found by Cheapflights users on 6/25. 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 8/55:40 am
GTF
-
ORD
1 stop5h 19m
Delta
Sat 8/84:45 pm
ORD
-
GTF
1 stop6h 53m
Delta
Deal found 6/25$378
This Delta deal was found by Cheapflights users on 6/25. 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.
Sat 8/85:40 am
GTF
-
ORD
1 stop5h 19m
Delta
Tue 8/117:48 am
ORD
-
GTF
1 stop5h 40m
Delta
Deal found 6/25$383
This Kiwi.com deal was found by Cheapflights users on 6/25. 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.
Mon 8/310:19 am
GTF
-
ORD
1 stop18h 18m
Multiple Airlines
Thu 8/67:29 am
ORD
-
GTF
1 stop27h 00m
Multiple Airlines
Deal found 6/25$390
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Fri 7/312:37 pm
GTF
-
ORD
1 stop7h 12m
United Airlines
Tue 8/114:20 pm
ORD
-
GTF
1 stop5h 52m
United Airlines
Deal found 6/23$401

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 June 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$318
(United Airlines)

One-way from

$272
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$513

Good round-trip deal

$568 or less

Good one-way deal

$201 or less
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
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Great Falls to Chicago O'Hare Intl.
Search Deals
Price to beat on a 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 June 27, 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 - ORD

GTFORD

Great Falls

Sat 9/12

2:25 pm-9:30 pm

1 stop6h 05m

Chicago O'Hare Intl

Sat 9/19

7:00 am-1:29 pm

1 stop7h 29m

$318

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 10/12

5:30 am-12:25 pm

1 stop5h 55m

Chicago O'Hare Intl

Tue 10/20

3:50 pm-10:53 pm

2 stops8h 03m

$324

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 9/11

2:25 pm-10:00 pm

1 stop6h 35m

Chicago O'Hare Intl

Fri 9/18

5:55 am-1:29 pm

1 stop8h 34m

$347

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 10/13

6:20 pm-8:34 am

2 stops13h 14m

Chicago O'Hare Intl

Tue 10/20

3:50 pm-10:53 pm

2 stops8h 03m

$359

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 8/21

2:25 pm-9:29 pm

1 stop6h 04m

Chicago O'Hare Intl

Sun 8/23

5:55 am-1:29 pm

1 stop8h 34m

$359

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 9/18

1:15 pm-9:52 pm

1 stop7h 37m

Chicago O'Hare Intl

Sun 9/20

8:55 am-5:41 pm

2 stops9h 46m

$439

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 8/21

5:40 am-11:59 am

1 stop5h 19m

Chicago O'Hare Intl

Sun 8/23

8:28 am-5:38 pm

2 stops10h 10m

$469

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 8/21

5:18 pm-8:28 pm

2 stops26h 10m

Chicago O'Hare Intl

Sun 8/23

11:30 am-4:38 pm

2 stops30h 08m

$489

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 8/5

5:40 am-11:59 am

1 stop5h 19m

Chicago O'Hare Intl

Sun 8/9

7:48 am-12:28 pm

1 stop5h 40m

$493
Quickest round-trip

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 7/30

12:30 pm-4:48 pm

Nonstop3h 18m

Chicago O'Hare Intl

Sat 8/1

9:00 am-11:46 am

Nonstop3h 46m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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 FlightHub the most. FlightHub 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.

Cheapflights Insights

Everything you need to know about your flight from Great Falls to Chicago O'Hare Intl Airport

What is the cheapest time of day to fly from GTF to ORD?

Find hourly flight availability from Great Falls to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 27, 2026.

When flying from Great Falls to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Great Falls to Chicago O'Hare Intl Airport?

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 June 27, 2026.
Peruse reviews from past customers who have flown with Delta and 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.
Delta
7.8
Good
8,451 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,451 reviews
Delta
7.8
Good
8,451 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,896 reviews
Delta
7.8
Good
8,451 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 2 different airlines.

  • 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 55m. Fly via United 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 are the cheapest airlines flying from Great Falls to Chicago O'Hare Intl Airport round-trip?

    Currently priced at $129, Delta will fly you from Great Falls to Chicago O'Hare Intl Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $300. Delta is currently priced 76% below the average price you’ll pay for this route.

  • What are the cheapest flights from Great Falls to Chicago O'Hare Intl Airport?

    The cheapest flight price from Great Falls to Chicago O'Hare Intl Airport is $201. On average you can expect to pay $494. The most popular route, (Great Falls - Chicago O'Hare Intl), can usually be booked for $318.

  • 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
Benton Harbor
Rosemont
Schaumburg
Naperville
Lake Geneva
Gurnee
Delavan
Oakbrook Terrace
Downers Grove
Des Plaines
Oak Brook
South Holland
Libertyville
Hoffman Estates
Warrenville
Rockford
Racine
Great Lakes
Northbrook
Waukegan

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Great Falls to O'Hare Intl

Discover the top 2 airlines 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 June 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$129Average$538FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$300Average$591FlexibilityNo cancel feeOn-time69%

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