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O'Hare Intl

$220+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
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 May 28, 2026.

This Delta deal was found by Cheapflights users on 5/27. 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 6/291:20 pm
GTF
-
ORD
1 stop7h 37m
Delta
Sat 7/117:45 am
ORD
-
GTF
1 stop5h 52m
Delta
Deal found 5/27$318
This Delta deal was found by Cheapflights users on 5/26. 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.
Wed 9/161:15 pm
GTF
-
ORD
1 stop7h 32m
Delta
Mon 9/212:00 pm
ORD
-
GTF
2 stops9h 42m
Delta
Deal found 5/26$324
This Delta deal was found by Cheapflights users on 5/27. 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 6/151:20 pm
GTF
-
ORD
1 stop7h 37m
Delta
Sat 7/117:45 am
ORD
-
GTF
1 stop5h 52m
Delta
Deal found 5/27$348
This Delta deal was found by Cheapflights users on 5/26. 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.
Thu 10/291:10 pm
GTF
-
ORD
1 stop7h 43m
Delta
Wed 11/46:00 am
ORD
-
GTF
2 stops7h 27m
Delta
Deal found 5/26$349
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Sat 6/62:37 pm
GTF
-
ORD
1 stop7h 12m
United Airlines
Sat 6/138:40 am
ORD
-
GTF
Nonstop3h 46m
United Airlines
Deal found 5/23$361
This United Airlines deal was found by Cheapflights users on 5/25. 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 7/92:37 pm
GTF
-
ORD
1 stop7h 42m
United Airlines
Sat 7/116:59 am
ORD
-
GTF
1 stop7h 42m
United Airlines
Deal found 5/25$373
This Delta deal was found by Cheapflights users on 5/27. 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 6/131:20 pm
GTF
-
ORD
1 stop7h 03m
Delta
Sat 7/117:45 am
ORD
-
GTF
1 stop5h 52m
Delta
Deal found 5/27$383
This Delta deal was found by Cheapflights users on 5/25. 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 6/271:20 pm
GTF
-
ORD
1 stop7h 03m
Delta
Sat 7/412:46 pm
ORD
-
GTF
2 stops10h 54m
Delta
Deal found 5/25$389

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 May 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$318
(Delta)

One-way from

$220
(Expedia)

Popular in

September

Cheapest in

February

Average price

$684

Good round-trip deal

$576 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
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Highest demand for flights based on searches. 12% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip 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 May 28, 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

Fri 9/18

1:15 pm-9:47 pm

1 stop7h 32m

Chicago O'Hare Intl

Mon 9/21

7:45 am-12:35 pm

1 stop5h 50m

$318

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 11/13

1:10 pm-9:53 pm

1 stop7h 43m

Chicago O'Hare Intl

Tue 11/17

11:30 am-10:53 pm

2 stops12h 23m

$324

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 7/3

1:20 pm-9:57 pm

1 stop7h 37m

Chicago O'Hare Intl

Fri 7/10

7:45 am-12:37 pm

1 stop5h 52m

$383

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 7/9

2:37 pm-11:19 pm

1 stop7h 42m

Chicago O'Hare Intl

Tue 7/14

8:59 am-11:45 am

Nonstop3h 46m

$461

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 7/8

6:25 pm-7:59 am

2 stops12h 34m

Chicago O'Hare Intl

Sat 7/11

7:45 am-12:37 pm

1 stop5h 52m

$469

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 6/29

2:37 pm-11:19 pm

1 stop7h 42m

Chicago O'Hare Intl

Sat 7/11

8:59 am-11:45 am

Nonstop3h 46m

$470

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 7/1

1:20 pm-9:57 pm

1 stop7h 37m

Chicago O'Hare Intl

Sun 7/5

7:45 am-12:40 pm

1 stop5h 55m

$488
Quickest round-trip

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 6/27

12:30 pm-4:48 pm

Nonstop3h 18m

Chicago O'Hare Intl

Sat 7/4

8:59 am-11:45 am

Nonstop3h 46m

$498

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 7/8

12:30 pm-4:48 pm

Nonstop3h 18m

Chicago O'Hare Intl

Sat 7/11

6:59 am-1:41 pm

1 stop7h 42m

$498

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 6/26

5:09 pm-6:20 am

1 stop12h 11m

Chicago O'Hare Intl

Mon 6/29

8:05 pm-4:29 pm

1 stop21h 24m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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

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 May 28, 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
7.9
Good
8,423 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
7.9
Good
8,423 reviews
Delta
7.9
Good
8,423 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
9,751 reviews
Delta
7.9
Good
8,423 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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 7h 32m. Fly via Delta or United Airlines 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 $277. Delta is currently priced 74% 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 $495. On average you can expect to pay $576. 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
Rosemont
Schaumburg
Benton Harbor
Naperville
Lake Geneva
Delavan
Oakbrook Terrace
Gurnee
Downers Grove
Des Plaines
Hoffman Estates
Oak Brook
South Holland
Libertyville
Warrenville
Rockford
Great Lakes
Northbrook
Waukegan
Willowbrook

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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$129Average$478FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$277Average$591FlexibilityNo cancel feeOn-time69%

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