$194+ Cheap flights from Great Falls (GTF) to O'Hare Intl (ORD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Great Falls to O'Hare Intl
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Best
Last-minute
One-way
Cheapest flights from Great Falls to O'Hare IntlExplore 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 23, 2026.
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 23, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/172:37 pm -
1 stop6h 15m
Sat 10/243:50 pm -
1 stop6h 32m
Deal found 9/23![United Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/36:15 am -
1 stop6h 00m
Wed 10/77:00 am -
1 stop7h 41m
Deal found 9/19![United Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/22. 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 11/142:45 pm -
1 stop5h 45m
Wed 11/182:30 pm -
1 stop8h 08m
Deal found 9/22![United Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 9/21. 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 9/261:15 pm -
1 stop7h 45m
Tue 9/298:25 am -
2 stops10h 16m
Deal found 9/21![Delta logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/152:37 pm -
1 stop8h 22m
Wed 10/213:50 pm -
1 stop6h 32m
Deal found 9/22![United Airlines logo]()
$528
This Delta deal was found by Cheapflights users on 9/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:18 pm -
1 stop7h 47m
Sat 10/249:59 am -
2 stops8h 48m
Deal found 9/23![Delta logo]()
$549
This Gotogate deal was found by Cheapflights users on 9/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:51 pm -
1 stop20h 30m
Wed 12/25:29 pm -
1 stop23h 42m
Deal found 9/21![Alaska Airlines logo]()
$599
This Gotogate deal was found by Cheapflights users on 9/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:19 pm -
1 stop12h 01m
Tue 9/291:03 pm -
1 stop28h 36m
Deal found 9/21![Alaska Airlines logo]()
$602
This Delta deal was found by Cheapflights users on 9/19. 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 10/36:21 pm -
2 stops13h 15m
Wed 10/77:35 am -
1 stop6h 03m
Deal found 9/19![Delta logo]()
$614
Best flights from Great Falls to O'Hare IntlDiscover carefully curated flight deals from Great Falls to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Great Falls to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/142:45 pm -
1 stop5h 45m
Wed 11/182:30 pm -
1 stop8h 08m
Deal found 9/20![United Airlines logo]()
$458
This Expedia deal was found by Cheapflights users on 9/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/244:08 pm -
2 stops20h 05m
Thu 1/288:00 am -
1 stop8h 28m
Deal found 9/22![Alaska Airlines logo]()
$531
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Thu 10/152:37 pm -
1 stop8h 22m
Wed 10/212:30 pm -
1 stop7h 52m
Deal found 9/18![United Airlines logo]()
$563
Last-minute flights from Great Falls to O'Hare IntlDiscover last-minute flight deals from Great Falls to O'Hare Intl. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to O'Hare Intl. Data last updated September 23, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/36:15 am -
1 stop6h 00m
Wed 10/77:00 am -
1 stop7h 41m
Deal found 9/19![United Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 9/19. 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 10/36:21 pm -
2 stops13h 15m
Wed 10/77:35 am -
1 stop6h 03m
Deal found 9/19![Delta logo]()
$614
One-way flights from Great Falls to O'Hare IntlSearch for one-way flight options from Great Falls to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Great Falls to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Gotogate deal was found by Cheapflights users on 9/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:15 pm -
1 stop11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Alaska Airlines logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Fri 10/305:15 pm -
3 stops20h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$821
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 September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (United Airlines) |
One-way from | $194 (Gotogate) |
Popular in | July |
Cheapest in | February |
Average price | $328 |
Good one-way deal | $484 or less |
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 7,457,451 searches. Data last updated September 23, 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
Cheapest round-trip
Quickest round-trip
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Fri 10/30
5:15 pm-5:40 am
1 stop11h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$194
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sat 11/14
2:45 pm-9:30 pm
1 stop5h 45m
Chicago O'Hare Intl
Wed 11/18
2:30 pm-9:38 pm
1 stop8h 08m
$458
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sun 1/24
4:08 pm-1:13 pm
2 stops20h 05m
Chicago O'Hare Intl
Thu 1/28
8:00 am-3:28 pm
1 stop8h 28m
$531
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Thu 10/15
2:37 pm-11:59 pm
1 stop8h 22m
Chicago O'Hare Intl
Wed 10/21
2:30 pm-9:22 pm
1 stop7h 52m
$563
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Fri 10/30
5:15 pm-2:45 pm
3 stops20h 30m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$821
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
GTF-ORD
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 23, 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.
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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.
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 locationsBenton Harbor
Rosemont
Des Plaines
Lake Geneva
Naperville
Glenview
Schaumburg
Oakbrook Terrace
Delavan
Oak Brook
Aurora
Libertyville
Rockford
Hoffman Estates
Beloit
Orland Park
South Holland
Elgin
Racine
Janesville
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Great Falls and O'Hare Intl flights
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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 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$300 | Average$537 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$323 | Average$538 | FlexibilityNo cancel fee | On-timeN/A |