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O'Hare Intl

$174+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$254
(United Airlines)

One-way from

$174
(Delta)

Popular in

November

Cheapest in

September

Average price

$505
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. 13% potential increase in price ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/3. 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 8/222:35 pmGTF - ORD
1 stop7h 07mUnited Airlines
Mon 8/251:58 pmORD - GTF
1 stop8h 30mUnited Airlines
Deal found 7/3$254
This Delta deal was found by Cheapflights users on 7/2. 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.
Fri 9/191:05 pmGTF - ORD
1 stop7h 52mDelta
Tue 9/237:55 amORD - GTF
1 stop5h 30mDelta
Deal found 7/2$266
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 8/204:29 pmGTF - ORD
1 stop13h 34mAlaska Airlines
Thu 8/2110:00 amORD - GTF
1 stop6h 49mAlaska Airlines
Deal found 7/1$391

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 July 3, 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

Fri 8/22

2:35 pm-10:42 pm

1 stop7h 07m

Chicago O'Hare Intl

Mon 8/25

1:58 pm-9:28 pm

1 stop8h 30m

$254

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Fri 9/19

1:05 pm-9:57 pm

1 stop7h 52m

Chicago O'Hare Intl

Tue 9/23

7:55 am-12:25 pm

1 stop5h 30m

$266

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Wed 8/20

4:29 pm-7:03 am

1 stop13h 34m

Chicago O'Hare Intl

Thu 8/21

10:00 am-3:49 pm

1 stop6h 49m

$391

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Thu 12/4

1:10 pm-9:53 pm

1 stop7h 43m

$174

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 8/17

4:55 pm-12:07 pm

1 stop18h 12m

$259

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sat 7/26

6:25 am-1:20 pm

1 stop5h 55m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 July 3, 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 July 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from Great Falls to Chicago O'Hare Intl Airport round-trip?

    Currently priced at $254, 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. Search Cheapflights for deals from Delta and Alaska Airlines - these airlines can fly you to your destination from $266 and $391, respectively.

  • What are the cheapest airlines to fly from Great Falls to Chicago O'Hare Intl Airport one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $174. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Great Falls to Chicago O'Hare Intl Airport for a low price.

  • 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 Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
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Waukegan

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$205Average$588FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$302Average$447FlexibilityNo cancel feeOn-time69%

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