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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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$254
(Delta)

One-way from

$137
(Delta)

Popular in

August

Cheapest in

December
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. 30% potential increase in price ($243 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($52 potential savings vs. average RT price).
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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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:40 amGTF - ORD
1 stop5h 13mDelta
Sat 10/47:55 amORD - GTF
1 stop5h 30mDelta
Deal found 9/14$298
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/222:31 pmGTF - ORD
1 stop8h 28mUnited Airlines
Wed 10/298:47 amORD - GTF
1 stop5h 40mUnited Airlines
Deal found 9/15$334
This Delta deal was found by Cheapflights users on 9/15. 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 10/221:08 pmGTF - ORD
1 stop7h 35mDelta
Wed 10/291:25 pmORD - GTF
2 stops10h 41mDelta
Deal found 9/15$377
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 10/246:15 pmGTF - ORD
1 stop28h 51mAlaska Airlines
Mon 10/2710:00 amORD - GTF
1 stop9h 10mAlaska Airlines
Deal found 9/17$460
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:31 pmGTF - ORD
1 stop7h 08mUnited Airlines
Sat 10/412:45 pmORD - GTF
2 stops25h 41mUnited Airlines
Deal found 9/15$468
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/125:30 amGTF - ORD
1 stop5h 57mDelta
Thu 10/167:50 amORD - GTF
1 stop5h 38mDelta
Deal found 9/16$483
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/12:31 pmGTF - ORD
1 stop5h 59mUnited Airlines
Sun 10/58:20 pmORD - GTF
2 stops25h 51mUnited Airlines
Deal found 9/16$533
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:31 pmGTF - ORD
2 stops27h 24mUnited Airlines
Mon 10/138:05 pmORD - GTF
2 stops18h 21mUnited Airlines
Deal found 9/15$536

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 September 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

Tue 3/3

4:00 pm-11:59 pm

1 stop6h 59m

Chicago O'Hare Intl

Wed 3/4

7:45 am-3:20 pm

1 stop8h 35m

$254

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 3/3

1:10 pm-9:55 pm

1 stop7h 45m

Chicago O'Hare Intl

Wed 3/4

7:15 am-12:32 pm

1 stop6h 17m

$254

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 9/30

5:40 am-11:53 am

1 stop5h 13m

Chicago O'Hare Intl

Sat 10/4

7:55 am-12:25 pm

1 stop5h 30m

$298

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 3/3

4:00 pm-11:59 pm

1 stop6h 59m

Chicago O'Hare Intl

Wed 3/4

7:45 am-3:20 pm

1 stop8h 35m

$306

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 10/22

2:31 pm-11:59 pm

1 stop8h 28m

Chicago O'Hare Intl

Wed 10/29

8:47 am-1:27 pm

1 stop5h 40m

$334

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 10/22

1:08 pm-9:43 pm

1 stop7h 35m

Chicago O'Hare Intl

Wed 10/29

1:25 pm-11:06 pm

2 stops10h 41m

$377

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 11/1

1:08 pm-9:43 pm

1 stop7h 35m

$137

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 11/1

6:20 am-7:01 pm

2 stops11h 41m

$290

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 11/1

6:50 pm-2:35 pm

3 stops42h 45m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 September 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 6h 59m. Fly via Hawaiian Airlines, Delta, or Alaska 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 $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. Check Cheapflights for deals on Alaska Airlines for as low as $430.

  • 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.

  • What is the cheapest month to book a flight from Great Falls to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Great Falls to Chicago O'Hare Intl Airport (average of $245). Flying from Great Falls to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Orland Park
Beloit
Racine
Rockford
Oak Brook
Elk Grove Village
Downers Grove
Naperville
Evanston
Merrillville
Bridgeview
Warrenville

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$277Average$678FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$430Average$588FlexibilityNo cancel feeOn-time75%

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