$300+ Cheap flights from Great Falls (GTF) to Chicago (CHI)
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 — CHI
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Great Falls to Chicago with Cheapflights
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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
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Cheapest flights from Great Falls to ChicagoExplore the most affordable flight options available from Great Falls to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
Explore the most affordable flight options available from Great Falls to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:45 pm -
1 stop7h 01m
Sat 11/143:56 pm -
1 stop6h 42m
Deal found 8/15![United Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 8/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:13 pm -
1 stop7h 34m
Sat 11/145:30 am -
2 stops13h 11m
Deal found 8/15![Delta logo]()
$334
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:15 pm -
1 stop7h 40m
Sat 9/268:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$364
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:15 pm -
1 stop7h 40m
Wed 9/308:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$394
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.
Tue 9/12:25 pm -
1 stop6h 04m
Sat 9/56:00 am -
1 stop8h 29m
Deal found 8/16![United Airlines logo]()
$398
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am -
1 stop5h 15m
Thu 10/18:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$404
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.
Thu 9/102:25 pm -
1 stop7h 21m
Tue 9/222:32 pm -
1 stop7h 40m
Deal found 8/17![United Airlines logo]()
$418
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:15 pm -
1 stop7h 40m
Thu 10/17:45 am -
1 stop5h 50m
Deal found 8/16![Delta logo]()
$428
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.
Fri 8/285:40 am -
1 stop5h 19m
Tue 9/17:48 am -
1 stop5h 40m
Deal found 8/18![Delta logo]()
$433
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am -
2 stops11h 19m
Wed 9/309:59 am -
2 stops8h 42m
Deal found 8/16![Delta logo]()
$482
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.
Wed 8/196:18 pm -
2 stops14h 41m
Wed 8/266:05 am -
2 stops12h 33m
Deal found 8/17![Delta logo]()
$509
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.
Sat 8/296:18 pm -
2 stops14h 41m
Tue 9/16:05 am -
2 stops17h 24m
Deal found 8/18![Delta logo]()
$619
Best flights from Great Falls to ChicagoDiscover carefully curated flight deals from Great Falls to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
Discover carefully curated flight deals from Great Falls to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
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.
Tue 9/12:25 pm -
1 stop6h 04m
Sat 9/56:00 am -
1 stop8h 29m
Deal found 8/16![United Airlines logo]()
$398
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.
Fri 8/285:40 am -
1 stop5h 19m
Tue 9/17:48 am -
1 stop5h 40m
Deal found 8/18![Delta logo]()
$433
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:18 pm -
2 stops26h 10m
Sat 9/56:00 am -
1 stop11h 45m
Deal found 8/16![Alaska Airlines logo]()
$644
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.
Mon 9/212:25 pm -
1 stop6h 34m
Sat 9/264:20 pm -
1 stop6h 02m
Deal found 8/16![United Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:25 pm -
1 stop6h 05m
Tue 9/17:00 am -
1 stop7h 29m
Deal found 8/15![United Airlines logo]()
$488
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.
Thu 9/102:25 pm -
1 stop7h 21m
Sun 9/135:55 am -
1 stop8h 34m
Deal found 8/16![United Airlines logo]()
$488
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.
Sat 8/296:18 pm -
2 stops14h 41m
Tue 9/16:05 am -
2 stops17h 24m
Deal found 8/18![Delta logo]()
$619
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.
Sat 8/296:18 pm -
2 stops13h 26m
Mon 8/312:00 pm -
1 stop23h 28m
Deal found 8/18![Delta logo]()
$640
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.
Fri 8/286:15 am -
1 stop7h 45m
Mon 8/311:30 pm -
1 stop8h 42m
Deal found 8/18![United Airlines logo]()
$558
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.
Sun 10/112:37 pm -
1 stop8h 22m
Sun 10/183:50 pm -
1 stop6h 32m
Deal found 8/16![United Airlines logo]()
$707
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:40 am -
2 stops11h 21m
Sat 9/510:56 am -
2 stops12h 33m
Deal found 8/16![Delta logo]()
$899
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:25 pm -
1 stop7h 21m
Mon 9/75:55 am -
1 stop8h 34m
Deal found 8/15![United Airlines logo]()
$752
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.
Sun 8/305:40 am -
2 stops11h 53m
Tue 9/11:51 pm -
2 stops9h 38m
Deal found 8/18![Delta logo]()
$1,027
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.
Sat 9/125:40 am -
2 stops10h 17m
Sat 9/191:19 pm -
2 stops10h 18m
Deal found 8/17![Delta logo]()
$1,133
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 8/315:40 am -
2 stops10h 19m
Wed 9/21:51 pm -
2 stops9h 38m
Deal found 8/18![Delta logo]()
$1,248
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:40 am -
2 stops11h 53m
Sun 9/279:29 am -
2 stops9h 12m
Deal found 8/16![Delta logo]()
$1,639
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.
Wed 10/75:40 am -
2 stops10h 07m
Mon 10/1212:49 pm -
2 stops10h 51m
Deal found 8/17![Delta logo]()
$1,679
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:40 am -
2 stops11h 53m
Tue 9/291:19 pm -
2 stops10h 18m
Deal found 8/16![Delta logo]()
$1,690
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:35 am -
2 stops10h 04m
Mon 11/301:22 pm -
2 stops10h 24m
Deal found 8/16![Delta logo]()
$1,759
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:40 am -
2 stops10h 17m
Sun 9/139:29 am -
2 stops9h 12m
Deal found 8/16![Delta logo]()
$2,170
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.
Sun 9/135:40 am -
2 stops11h 53m
Sun 9/202:00 pm -
2 stops9h 37m
Deal found 8/17![Delta logo]()
$2,701
Last-minute flights from Great Falls to ChicagoDiscover last-minute flight deals from Great Falls to Chicago. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to Chicago. Data last updated August 19, 2026 and is based on user searches.
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.
Wed 8/196:18 pm -
2 stops14h 41m
Fri 8/281:25 pm -
2 stops10h 13m
Deal found 8/17![Delta logo]()
$509
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.
Fri 8/281:08 pm -
1 stop7h 25m
Wed 9/27:48 am -
1 stop5h 40m
Deal found 8/18![Delta logo]()
$433
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.
Fri 8/281:08 pm -
1 stop7h 25m
Tue 9/110:33 am -
2 stops12h 56m
Deal found 8/18![Delta logo]()
$439
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.
Tue 9/12:25 pm -
1 stop6h 04m
Sat 9/56:00 am -
1 stop8h 29m
Deal found 8/16![United Airlines logo]()
$398
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.
Thu 9/102:25 pm -
1 stop6h 35m
Sat 9/192:32 pm -
1 stop7h 40m
Deal found 8/17![United Airlines logo]()
$418
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:15 pm -
1 stop27h 49m
Sat 9/268:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$445
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:15 pm -
1 stop7h 40m
Sat 9/268:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$364
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:15 pm -
1 stop7h 40m
Wed 9/308:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$394
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:15 pm -
1 stop7h 40m
Thu 10/17:45 am -
1 stop5h 50m
Deal found 8/16![Delta logo]()
$428
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am -
1 stop5h 15m
Thu 10/18:25 am -
2 stops10h 16m
Deal found 8/16![Delta logo]()
$404
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am -
1 stop5h 15m
Tue 9/297:00 am -
2 stops11h 41m
Deal found 8/16![Delta logo]()
$451
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am -
2 stops11h 19m
Wed 9/309:59 am -
2 stops8h 42m
Deal found 8/16![Delta logo]()
$482
One-way flights from Great Falls to ChicagoSearch for one-way flight options from Great Falls to Chicago. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
Search for one-way flight options from Great Falls to Chicago. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Travelocity deal was found by Cheapflights users on 8/14. 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 -
2 stops25h 56m
Deal found 8/14![Alaska Airlines logo]()
$300
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.
Sun 9/62:25 pm -
1 stop7h 21m
Deal found 8/16![United Airlines logo]()
$356
This Delta 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 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 8/16![Delta logo]()
$372
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.
Mon 9/76:15 am -
1 stop7h 45m
Deal found 8/16![United Airlines logo]()
$377
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:40 am -
2 stops17h 08m
Deal found 8/16![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:25 pm -
1 stop7h 21m
Deal found 8/15![United Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 8/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:18 pm -
2 stops14h 41m
Deal found 8/15![Delta logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Thu 9/175:19 pm -
3 stops48h 04m
Deal found 8/14![Multiple Airlines logo]()
$593
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Thu 9/175:19 pm -
3 stops47h 32m
Deal found 8/14![Multiple Airlines logo]()
$612
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:25 pm -
3 stops54h 30m
Deal found 8/16![Multiple Airlines logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:18 pm -
3 stops40h 37m
Deal found 8/15![Multiple Airlines logo]()
$689
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:25 pm -
3 stops47h 58m
Deal found 8/16![Multiple Airlines logo]()
$832
Find flight deals from Great Falls to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Chicago (CHI). 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, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $328 (United Airlines) |
One-way from | $300 (Travelocity) |
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 Chicago 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, 2026.
Use the filters below to find and compare flights from Great Falls to Chicago that are best for you.
Fly from
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Route
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Cheapest round-trip
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Tue 9/1
2:25 pm-9:29 pm
1 stop6h 04m
Chicago O'Hare Intl
Sat 9/5
6:00 am-1:29 pm
1 stop8h 29m
$398
Quickest round-trip
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Fri 8/28
5:40 am-11:59 am
1 stop5h 19m
Chicago O'Hare Intl
Tue 9/1
7:48 am-12:28 pm
1 stop5h 40m
$433
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Mon 9/21
2:25 pm-9:59 pm
1 stop6h 34m
Chicago O'Hare Intl
Sat 9/26
4:20 pm-9:22 pm
1 stop6h 02m
$453
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sat 8/29
2:25 pm-9:30 pm
1 stop6h 05m
Chicago O'Hare Intl
Tue 9/1
7:00 am-1:29 pm
1 stop7h 29m
$488
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Thu 9/10
2:25 pm-10:46 pm
1 stop7h 21m
Chicago O'Hare Intl
Sun 9/13
5:55 am-1:29 pm
1 stop8h 34m
$488
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Fri 8/28
6:15 am-3:00 pm
1 stop7h 45m
Chicago O'Hare Intl
Mon 8/31
1:30 pm-9:12 pm
1 stop8h 42m
$558
Great FallsChicago
GTF Great Falls - MDW Chicago Midway
GTFMDW
Great Falls
Sat 8/29
6:18 pm-9:59 am
2 stops14h 41m
Chicago Midway
Tue 9/1
6:05 am-10:29 pm
2 stops17h 24m
$619
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sat 8/29
6:18 pm-8:44 am
2 stops13h 26m
Chicago O'Hare Intl
Mon 8/31
2:00 pm-12:28 pm
1 stop23h 28m
$640
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Tue 9/1
5:18 pm-8:28 pm
2 stops26h 10m
Chicago O'Hare Intl
Sat 9/5
6:00 am-4:45 pm
1 stop11h 45m
$644
Great FallsChicago
GTF Great Falls - ORD Chicago O'Hare Intl
GTFORD
Great Falls
Sun 10/11
2:37 pm-11:59 pm
1 stop8h 22m
Chicago O'Hare Intl
Sun 10/18
3:50 pm-9:22 pm
1 stop6h 32m
$707
Showing 1-10 of 31 resultsSorted by cheapest first
Compare providers for flights from Great Falls to Chicago
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 Chicago 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 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-Chicago flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Great Falls-Chicago 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 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 Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Great Falls with our price prediction graph.
GTF-CHI
GTF-ORD
GTF-MDW
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
GTF-CHI
GTF-ORD
GTF-MDW
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated August 19, 2026.
See what other customers who have flown with Delta and United Airlines from Great Falls to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Boarding
8.1
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 Chicago. 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?
Book flights to Chicago if you plan to visit one of these locationsBenton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter
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Other flights to Chicago
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Great Falls and Chicago flights
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Other flights from Great Falls
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Top 2 airlines flying from Great Falls to Chicago
Discover the top 2 airlines that operate flights from Great Falls to Chicago. 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, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$270 | Average$538 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$300 | Average$568 | FlexibilityNo cancel fee | On-time69% |