$195+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — ORD
Jul 15 — Jul 221
Round-trip
1 adult, Economy
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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 June 15, 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 June 15, 2026.
This Delta deal was found by Cheapflights users on 6/14. 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.
Thu 9/31:08 pm
GTF
- ORD
1 stop7h 22m
Delta
Sun 9/67:48 am
ORD
- GTF
1 stop5h 40m
Delta
Deal found 6/14![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 6/14. 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.
Wed 8/121:08 pm
GTF
- ORD
1 stop7h 22m
Delta
Fri 8/2111:22 am
ORD
- GTF
2 stops12h 16m
Delta
Deal found 6/14![Delta logo]()
$324
This Delta deal was found by Cheapflights users on 6/14. 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.
Sat 8/156:18 pm
GTF
- ORD
2 stops13h 26m
Delta
Fri 8/211:59 pm
ORD
- GTF
2 stops9h 39m
Delta
Deal found 6/14![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:25 pm
GTF
- ORD
1 stop7h 21m
United Airlines
Wed 9/167:00 am
ORD
- GTF
1 stop7h 29m
United Airlines
Deal found 6/14![United Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 6/14. 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.
Wed 8/121:08 pm
GTF
- ORD
1 stop7h 22m
Delta
Tue 8/187:48 am
ORD
- GTF
1 stop5h 40m
Delta
Deal found 6/14![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 6/14. 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 8/111:08 pm
GTF
- ORD
1 stop7h 22m
Delta
Fri 8/211:59 pm
ORD
- GTF
2 stops9h 39m
Delta
Deal found 6/14![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 6/14. 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.
Thu 11/55:30 am
GTF
- ORD
2 stops8h 27m
Delta
Sun 11/81:35 pm
ORD
- GTF
2 stops10h 18m
Delta
Deal found 6/14![Delta logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:19 am
GTF
- ORD
1 stop18h 18m
Multiple Airlines
Sun 8/167:15 am
ORD
- GTF
1 stop27h 14m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$374
This Expedia deal was found by Cheapflights users on 6/12. 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
GTF
- ORD
1 stop12h 01m
Alaska Airlines
Thu 9/248:00 am
ORD
- GTF
1 stop9h 39m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 6/14. 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.
Wed 8/121:08 pm
GTF
- ORD
1 stop7h 22m
Delta
Thu 8/207:48 am
ORD
- GTF
1 stop5h 40m
Delta
Deal found 6/14![Delta logo]()
$383
This Travelocity deal was found by Cheapflights users on 6/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm
GTF
- ORD
2 stops25h 56m
Alaska Airlines
Wed 9/231:03 pm
ORD
- GTF
1 stop28h 36m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$385
This Expedia deal was found by Cheapflights users on 6/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:09 pm
GTF
- ORD
1 stop12h 11m
Alaska Airlines
Sat 8/156:00 am
ORD
- GTF
1 stop11h 29m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$388
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 June 15, 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 June 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 9/295:19 pm
GTF
- ORD
1 stop12h 01m
Alaska Airlines
Sat 10/39:00 am
ORD
- GTF
1 stop8h 35m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 6/12. 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.
Thu 8/131:08 pm
GTF
- ORD
1 stop7h 22m
Delta
Mon 8/177:48 am
ORD
- GTF
1 stop5h 40m
Delta
Deal found 6/12![Delta logo]()
$433
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/2312:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Tue 7/288:59 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/11![United Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 6/12. 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 6/271:20 pm
GTF
- ORD
1 stop7h 03m
Delta
Sat 7/45:00 pm
ORD
- GTF
1 stop6h 40m
Delta
Deal found 6/12![Delta logo]()
$448
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/35:09 pm
GTF
- ORD
2 stops26h 23m
Alaska Airlines
Sat 8/88:20 pm
ORD
- GTF
1 stop21h 09m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/212:37 pm
GTF
- ORD
1 stop7h 12m
United Airlines
Tue 7/288:59 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/11![United Airlines logo]()
$496
This Delta deal was found by Cheapflights users on 6/12. 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 7/41:20 pm
GTF
- ORD
1 stop7h 03m
Delta
Thu 7/97:45 am
ORD
- GTF
1 stop5h 52m
Delta
Deal found 6/12![Delta logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/912:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Thu 7/168:59 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/10![United Airlines logo]()
$501
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/32:37 pm
GTF
- ORD
1 stop7h 12m
United Airlines
Sat 8/89:00 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/11![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1612:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Sat 7/185:00 am
ORD
- GTF
1 stop17h 34m
United Airlines
Deal found 6/14![United Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/252:37 pm
GTF
- ORD
1 stop7h 12m
United Airlines
Sat 7/46:59 am
ORD
- GTF
1 stop7h 42m
United Airlines
Deal found 6/14![United Airlines logo]()
$608
Last-minute flights from Great Falls to O'Hare IntlDiscover last-minute flight deals from Great Falls to O'Hare Intl. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to O'Hare Intl. Data last updated June 15, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 6/185:40 am
GTF
- ORD
1 stop5h 20m
Delta
Tue 7/77:45 am
ORD
- GTF
1 stop5h 52m
Delta
Deal found 6/11![Delta logo]()
$468
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/262:37 pm
GTF
- ORD
1 stop7h 42m
United Airlines
Sat 7/49:00 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/14![United Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/272:37 pm
GTF
- ORD
1 stop7h 12m
United Airlines
Sat 7/49:00 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/12![United Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 6/12. 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 6/271:20 pm
GTF
- ORD
1 stop7h 03m
Delta
Sat 7/45:00 pm
ORD
- GTF
1 stop6h 40m
Delta
Deal found 6/12![Delta logo]()
$448
This Delta deal was found by Cheapflights users on 6/14. 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.
Sun 6/285:40 am
GTF
- ORD
1 stop5h 20m
Delta
Sat 7/45:00 pm
ORD
- GTF
1 stop6h 40m
Delta
Deal found 6/14![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 6/12. 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 7/41:20 pm
GTF
- ORD
1 stop7h 03m
Delta
Fri 7/107:45 am
ORD
- GTF
1 stop5h 52m
Delta
Deal found 6/12![Delta logo]()
$403
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/412:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Thu 7/98:59 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/12![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 6/12. 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 7/41:20 pm
GTF
- ORD
1 stop7h 03m
Delta
Thu 7/97:45 am
ORD
- GTF
1 stop5h 52m
Delta
Deal found 6/12![Delta logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/412:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Sat 7/119:00 am
ORD
- GTF
Nonstop3h 46m
United Airlines
Deal found 6/12![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/2912:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Wed 8/52:33 pm
ORD
- GTF
1 stop8h 01m
United Airlines
Deal found 6/12![United Airlines logo]()
$478
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 June 15, 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 June 15, 2026.
This Travelocity deal was found by Cheapflights users on 6/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm
GTF
- ORD
1 stop12h 01m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$195
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 8/75:09 pm
GTF
- ORD
2 stops26h 19m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$220
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/72:37 pm
GTF
- ORD
1 stop7h 42m
United Airlines
Deal found 6/10![United Airlines logo]()
$280
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:25 pm
GTF
- ORD
1 stop7h 21m
United Airlines
Deal found 6/14![United Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 6/10. 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 7/71:17 pm
GTF
- ORD
1 stop7h 12m
Delta
Deal found 6/10![Delta logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/812:30 pm
GTF
- ORD
Nonstop3h 18m
United Airlines
Deal found 6/11![United Airlines logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:09 pm
GTF
- ORD
1 stop12h 11m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$390
This Orbitz deal was found by Cheapflights users on 6/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:09 pm
GTF
- ORD
1 stop12h 11m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$396
This Expedia deal was found by Cheapflights users on 6/10. 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.
Tue 7/75:09 pm
GTF
- ORD
2 stops10h 51m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$436
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 June 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $318 (Delta) |
One-way from | $195 (Travelocity) |
Popular in | September |
Cheapest in | February |
Average price | $496 |
Good round-trip deal | $576 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 2,558,603 searches. Data last updated June 15, 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 - ORD
GTFORD
Great Falls
Tue 9/29
5:19 pm-6:20 am
1 stop12h 01m
Chicago O'Hare Intl
Sat 10/3
9:00 am-4:35 pm
1 stop8h 35m
$389
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Thu 8/13
1:08 pm-9:30 pm
1 stop7h 22m
Chicago O'Hare Intl
Mon 8/17
7:48 am-12:28 pm
1 stop5h 40m
$433
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Sat 6/27
1:20 pm-9:23 pm
1 stop7h 03m
Chicago O'Hare Intl
Sat 7/4
5:00 pm-10:40 pm
1 stop6h 40m
$448
Quickest round-trip
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Thu 7/23
12:30 pm-4:48 pm
Nonstop3h 18m
Chicago O'Hare Intl
Tue 7/28
8:59 am-11:45 am
Nonstop3h 46m
$458
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Sat 7/4
1:20 pm-9:23 pm
1 stop7h 03m
Chicago O'Hare Intl
Thu 7/9
7:45 am-12:37 pm
1 stop5h 52m
$463
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Mon 8/3
5:09 pm-8:32 pm
2 stops26h 23m
Chicago O'Hare Intl
Sat 8/8
8:20 pm-4:29 pm
1 stop21h 09m
$494
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Tue 7/21
2:37 pm-10:49 pm
1 stop7h 12m
Chicago O'Hare Intl
Tue 7/28
8:59 am-11:45 am
Nonstop3h 46m
$496
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Thu 7/9
12:30 pm-4:48 pm
Nonstop3h 18m
Chicago O'Hare Intl
Thu 7/16
8:59 am-11:45 am
Nonstop3h 46m
$501
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Mon 8/3
2:37 pm-10:49 pm
1 stop7h 12m
Chicago O'Hare Intl
Sat 8/8
9:00 am-11:46 am
Nonstop3h 46m
$569
Great FallsChicago
GTF - ORD
GTFORD
Great Falls
Thu 7/16
12:30 pm-4:48 pm
Nonstop3h 18m
Chicago O'Hare Intl
Sat 7/18
5:00 am-9:34 pm
1 stop17h 34m
$585
Showing 1-10 of 20 resultsSorted 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 June.
| 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.
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 June 15, 2026.
When flying from Great Falls to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Great Falls to Chicago O'Hare Intl Airport?
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 June 15, 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
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
Schaumburg
Naperville
Lake Geneva
Gurnee
Delavan
Oakbrook Terrace
Downers Grove
Des Plaines
Hoffman Estates
Oak Brook
South Holland
Libertyville
Warrenville
Rockford
Great Lakes
Northbrook
Waukegan
Elk Grove Village
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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 June 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$129 | Average$538 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$300 | Average$591 | FlexibilityNo cancel fee | On-time69% |