$328+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Sep 25 — Oct 21
Round-trip
1 adult, Economy
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Find cheap flights from Great Falls to O'Hare Intl with Cheapflights
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 August 26, 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 August 26, 2026.
This Delta deal was found by Cheapflights users on 8/21. 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.
Fri 10/161:18 pm -
1 stop7h 47m
Tue 10/207:35 am -
1 stop6h 03m
Deal found 8/21![Delta logo]()
$328
This United Airlines deal was found by Cheapflights users on 8/25. 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 10/152:37 pm -
1 stop7h 09m
Wed 10/217:00 am -
1 stop7h 41m
Deal found 8/25![United Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Tue 9/222:25 pm -
1 stop7h 21m
Sat 9/264:20 pm -
1 stop6h 02m
Deal found 8/23![United Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 8/24. 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.
Thu 10/159:51 am -
1 stop14h 08m
Wed 10/216:30 am -
2 stops27h 31m
Deal found 8/24![Multiple Airlines logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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.
Sat 11/144:59 pm -
1 stop11h 41m
Wed 11/189:30 am -
1 stop7h 49m
Deal found 8/24![Alaska Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 8/24. 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 9/82:25 pm -
1 stop6h 34m
Sat 9/124:26 pm -
1 stop5h 46m
Deal found 8/24![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 9/232:25 pm -
1 stop6h 35m
Sat 9/263:50 pm -
1 stop6h 32m
Deal found 8/25![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/22. 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 8/296:15 am -
1 stop6h 15m
Sat 9/56:00 am -
1 stop8h 29m
Deal found 8/22![United Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 8/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:08 pm -
2 stops9h 49m
Sat 9/54:45 pm -
1 stop6h 44m
Deal found 8/22![Delta logo]()
$439
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 9/212:25 pm -
1 stop6h 34m
Sat 9/264:20 pm -
1 stop6h 02m
Deal found 8/25![United Airlines logo]()
$453
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 August 26, 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 August 26, 2026.
This Delta deal was found by Cheapflights users on 8/23. 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.
Fri 10/161:18 pm -
1 stop7h 47m
Tue 10/207:35 am -
1 stop6h 03m
Deal found 8/23![Delta logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 8/24. 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.
Thu 10/159:51 am -
1 stop14h 08m
Wed 10/216:30 am -
2 stops27h 31m
Deal found 8/24![Multiple Airlines logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 8/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:59 pm -
1 stop11h 41m
Wed 11/189:30 am -
1 stop7h 49m
Deal found 8/23![Alaska Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 8/24. 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 9/82:25 pm -
1 stop6h 34m
Sat 9/124:26 pm -
1 stop5h 46m
Deal found 8/24![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/192:25 pm -
1 stop6h 34m
Wed 9/232:32 pm -
1 stop7h 40m
Deal found 8/22![United Airlines logo]()
$493
This United Airlines deal was found by Cheapflights users on 8/23. 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 11/142:45 pm -
1 stop5h 45m
Wed 11/187:15 am -
2 stops15h 23m
Deal found 8/23![United Airlines logo]()
$517
Last-minute flights from Great Falls to O'Hare IntlDiscover last-minute flight deals from Great Falls to O'Hare Intl. Data last updated August 26, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to O'Hare Intl. Data last updated August 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/22. 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 8/296:15 am -
1 stop6h 15m
Sat 9/56:00 am -
1 stop8h 29m
Deal found 8/22![United Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 8/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:08 pm -
2 stops9h 49m
Sat 9/54:45 pm -
1 stop6h 44m
Deal found 8/22![Delta logo]()
$439
This United Airlines deal was found by Cheapflights users on 8/24. 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 9/82:25 pm -
1 stop6h 34m
Sat 9/124:26 pm -
1 stop5h 46m
Deal found 8/24![United Airlines logo]()
$414
This Expedia deal was found by Cheapflights users on 8/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm -
1 stop12h 01m
Mon 9/218:17 pm -
2 stops21h 22m
Deal found 8/23![Alaska Airlines logo]()
$512
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/192:25 pm -
1 stop6h 34m
Wed 9/232:32 pm -
1 stop7h 40m
Deal found 8/22![United Airlines logo]()
$493
This Delta deal was found by Cheapflights users on 8/25. 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.
Sun 9/205:40 am -
1 stop5h 15m
Sat 9/267:00 am -
2 stops11h 41m
Deal found 8/25![Delta logo]()
$511
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 9/212:25 pm -
1 stop6h 34m
Sat 9/264:20 pm -
1 stop6h 02m
Deal found 8/25![United Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Tue 9/222:25 pm -
1 stop7h 21m
Sat 9/264:20 pm -
1 stop6h 02m
Deal found 8/23![United Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 9/232:25 pm -
1 stop6h 35m
Sat 9/263:50 pm -
1 stop6h 32m
Deal found 8/25![United Airlines logo]()
$418
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 August 26, 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 August 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:25 pm -
1 stop11h 55m
Deal found 8/21![Alaska Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 8/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:15 am -
1 stop6h 14m
Deal found 8/21![United Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 8/21. 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.
Mon 9/75:40 am -
2 stops30h 49m
Deal found 8/21![Delta logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Sun 9/65:25 pm -
3 stops35h 52m
Deal found 8/21![Multiple Airlines logo]()
$813
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 August 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $328 (Delta) |
Popular in | July |
Cheapest in | February |
Average price | $373 |
Good round-trip deal | $478 or less |
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 August 26, 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
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Fri 10/16
1:18 pm-10:05 pm
1 stop7h 47m
Chicago O'Hare Intl
Tue 10/20
7:35 am-12:38 pm
1 stop6h 03m
$328
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Thu 10/15
9:51 am-12:59 am
1 stop14h 08m
Chicago O'Hare Intl
Wed 10/21
6:30 am-9:01 am
2 stops27h 31m
$386
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sat 11/14
4:59 pm-5:40 am
1 stop11h 41m
Chicago O'Hare Intl
Wed 11/18
9:30 am-4:19 pm
1 stop7h 49m
$400
Quickest round-trip
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Tue 9/8
2:25 pm-9:59 pm
1 stop6h 34m
Chicago O'Hare Intl
Sat 9/12
4:26 pm-9:12 pm
1 stop5h 46m
$414
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sat 9/19
2:25 pm-9:59 pm
1 stop6h 34m
Chicago O'Hare Intl
Wed 9/23
2:32 pm-9:12 pm
1 stop7h 40m
$493
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
7:15 am-9:38 pm
2 stops15h 23m
$517
Cheapest one-way
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sun 9/6
5:25 pm-6:20 am
1 stop11h 55m
$369
Quickest one-way
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Mon 9/7
6:15 am-1:29 pm
1 stop6h 14m
$511
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sun 9/6
5:25 pm-6:17 am
3 stops35h 52m
$813
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 August.
| 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 August 26, 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.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
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
Naperville
Lake Geneva
Schaumburg
Oak Brook
Oakbrook Terrace
Delavan
South Holland
Libertyville
Glenview
Orland Park
Hoffman Estates
Aurora
Beloit
Rockford
Racine
Great Lakes
Janesville
Gurnee
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Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 26, 2026.
Great Falls and O'Hare Intl flights
Browse other Great Falls and O'Hare Intl flight options. Last updated on August 26, 2026.
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Browse through other flights departing from Great Falls. Flights are based on user searches made on Cheapflights and were last updated on August 26, 2026.
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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 August 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$270 | Average$538 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$300 | Average$556 | FlexibilityNo cancel fee | On-time69% |