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O'Hare Intl

$163+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
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 August 19, 2025.

Round-trip from

$240
(United Airlines)

One-way from

$163
(United Airlines)

Popular in

November

Cheapest in

September

Average price

$616

Good round-trip deal

$721 or less
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 ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip 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 August 19, 2025.

This United Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 9/222:35 pmGTF - ORD
1 stop7h 07mUnited Airlines
Wed 9/241:58 pmORD - GTF
1 stop8h 30mUnited Airlines
Deal found 8/18$240
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:11 pmGTF - ORD
2 stops13h 29mDelta
Wed 9/247:55 amORD - GTF
1 stop5h 30mDelta
Deal found 8/18$250
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/22:35 pmGTF - ORD
1 stop8h 24mUnited Airlines
Sat 9/64:10 pmORD - GTF
1 stop6h 18mUnited Airlines
Deal found 8/17$274
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:07 pmGTF - ORD
1 stop16h 36mMultiple Airlines
Mon 9/89:00 amORD - GTF
1 stop8h 05mMultiple Airlines
Deal found 8/17$279
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 8/272:35 pmGTF - ORD
1 stop8h 24mUnited Airlines
Tue 9/91:58 pmORD - GTF
1 stop8h 30mUnited Airlines
Deal found 8/18$308
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 9/222:35 pmGTF - ORD
1 stop7h 07mUnited Airlines
Tue 9/232:53 pmORD - GTF
1 stop7h 35mUnited Airlines
Deal found 8/18$320
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:00 amGTF - ORD
1 stop8h 00mDelta
Sat 9/62:25 pmORD - GTF
2 stops9h 20mDelta
Deal found 8/17$379
This United Airlines deal was found by Cheapflights users on 8/16. 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
2 stops25h 34mUnited Airlines
Wed 10/82:53 pmORD - GTF
1 stop7h 18mUnited Airlines
Deal found 8/16$456

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 August 19, 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

Mon 9/22

2:35 pm-10:42 pm

1 stop7h 07m

Chicago O'Hare Intl

Wed 9/24

1:58 pm-9:28 pm

1 stop8h 30m

$240

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 1/17

4:00 pm-11:59 pm

1 stop6h 59m

Chicago O'Hare Intl

Sat 1/24

7:45 am-3:20 pm

1 stop8h 35m

$250

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 9/22

6:11 pm-8:40 am

2 stops13h 29m

Chicago O'Hare Intl

Wed 9/24

7:55 am-12:25 pm

1 stop5h 30m

$250

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 1/17

5:30 am-4:48 pm

2 stops10h 18m

Chicago O'Hare Intl

Sat 1/24

7:15 am-12:32 pm

1 stop6h 17m

$260

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 9/2

2:35 pm-11:59 pm

1 stop8h 24m

Chicago O'Hare Intl

Sat 9/6

4:10 pm-9:28 pm

1 stop6h 18m

$274

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 8/29

6:07 pm-11:43 am

1 stop16h 36m

Chicago O'Hare Intl

Mon 9/8

9:00 am-4:05 pm

1 stop8h 05m

$279

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 9/22

2:35 pm-10:42 pm

1 stop7h 07m

Chicago O'Hare Intl

Tue 9/23

2:53 pm-9:28 pm

1 stop7h 35m

$320

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Mon 9/22

6:11 pm-8:40 am

2 stops13h 29m

Chicago O'Hare Intl

Tue 9/23

5:30 pm-12:25 pm

2 stops19h 55m

$325

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Tue 9/2

6:00 am-3:00 pm

1 stop8h 00m

Chicago O'Hare Intl

Sat 9/6

2:25 pm-10:45 pm

2 stops9h 20m

$379

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 10/2

2:31 pm-9:30 pm

1 stop5h 59m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 14 results
1
2

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 August 19, 2025.

When flying from Great Falls to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 35% versus a flight in the morning.

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 August 19, 2025.
Peruse reviews from past customers who have flown with Alaska 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

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.

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 6h 59m. Fly via United Airlines, Hawaiian 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 $430, Alaska Airlines will fly you from Great Falls to Chicago O'Hare Intl Airport and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip.

  • 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 $587. On average you can expect to pay $721. The most popular route, (Great Falls - Chicago O'Hare Intl), can usually be booked for $240.

  • 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
Beloit
Hoffman Estates
Skokie
Des Plaines
Elgin
Gurnee
Arlington Heights
Racine
Rockford
Great Lakes
Orland Park
Merrillville
Naperville
Waukegan
Elk Grove Village
Downers Grove
Tinley Park
Evanston

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 August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$430Average$588FlexibilityNo cancel feeOn-time75%

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