$138+ Cheap flights from Montana 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Nov 1 — Nov 81
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Montana 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 Montana to O'Hare Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Montana to O'Hare IntlExplore the most affordable flight options available from Montana to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2026.
Explore the most affordable flight options available from Montana to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:59 pm -
1 stop9h 41m
Tue 11/36:35 pm -
1 stop16h 04m
Deal found 9/30![Alaska Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:55 pm -
1 stop5h 04m
Wed 11/253:56 pm -
1 stop6h 18m
Deal found 10/1![United Airlines logo]()
$335
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:15 pm -
Nonstop3h 14m
Sun 10/259:58 am -
Nonstop3h 27m
Deal found 9/30![American Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 9/27. 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 12/25:30 am -
1 stop5h 33m
Mon 12/712:34 pm -
2 stops10h 54m
Deal found 9/27![Delta logo]()
$340
This American Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:28 pm -
Nonstop3h 02m
Sat 10/37:09 am -
1 stop6h 34m
Deal found 10/1![American Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 9/30. 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 10/302:37 pm -
1 stop7h 09m
Sun 11/19:07 am -
Nonstop3h 38m
Deal found 9/30![United Airlines logo]()
$345
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:14 am -
Nonstop3h 26m
Tue 12/295:14 pm -
Nonstop3h 41m
Deal found 9/30![American Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 9/29. 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 9/29![United Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/255:00 am -
1 stop5h 19m
Sun 11/17:00 am -
1 stop7h 29m
Deal found 9/27![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:28 pm -
1 stop5h 50m
Sat 10/35:51 pm -
1 stop6h 00m
Deal found 10/1![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 9/29. 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 11/141:21 pm -
2 stops9h 33m
Wed 11/187:30 am -
1 stop6h 11m
Deal found 9/29![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 9/29. 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 11/62:37 pm -
1 stop7h 09m
Mon 11/910:55 am -
1 stop5h 35m
Deal found 9/29![United Airlines logo]()
$354
Best flights from Montana to O'Hare IntlDiscover carefully curated flight deals from Montana to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 2, 2026.
Discover carefully curated flight deals from Montana to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 2, 2026.
This Delta deal was found by Cheapflights users on 9/30. 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 3/26:15 am -
2 stops11h 17m
Sat 3/67:10 am -
2 stops13h 38m
Deal found 9/30![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 9/29. 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 2/122:42 pm -
1 stop7h 02m
Sat 2/138:45 am -
1 stop5h 38m
Deal found 9/29![United Airlines logo]()
$335
This Alaska Airlines deal was found by Cheapflights users on 9/29. 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 10/277:45 pm -
1 stop8h 55m
Wed 10/283:49 pm -
1 stop8h 10m
Deal found 9/29![Alaska Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/28. 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 12/308:14 am -
Nonstop3h 08m
Mon 1/119:10 am -
Nonstop3h 38m
Deal found 9/28![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 9/29. 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 2/126:15 am -
2 stops9h 22m
Sat 2/137:30 am -
1 stop5h 49m
Deal found 9/29![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 9/30. 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 2/276:15 am -
2 stops9h 22m
Thu 3/47:10 am -
2 stops13h 38m
Deal found 9/30![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/2312:28 pm -
Nonstop3h 31m
Tue 10/277:00 am -
1 stop7h 31m
Deal found 9/29![United Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 9/28. 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 10/277:03 am -
1 stop8h 47m
Thu 10/296:00 am -
1 stop9h 50m
Deal found 9/28![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 9/27. 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 11/141:21 pm -
1 stop7h 26m
Wed 11/187:30 am -
1 stop6h 11m
Deal found 9/27![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/29. 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 12/112:41 pm -
1 stop5h 53m
Mon 1/114:07 pm -
1 stop6h 19m
Deal found 9/29![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1412:58 pm -
1 stop7h 55m
Sun 1/177:30 am -
1 stop5h 49m
Deal found 10/1![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:49 pm -
1 stop7h 10m
Fri 10/309:00 am -
1 stop14h 54m
Deal found 10/1![Alaska Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 9/28. 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 12/45:30 am -
1 stop5h 33m
Mon 12/712:34 pm -
2 stops10h 54m
Deal found 9/28![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/154:30 pm -
1 stop6h 29m
Mon 10/194:45 pm -
Nonstop3h 27m
Deal found 9/29![United Airlines logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:41 pm -
1 stop11h 59m
Tue 11/177:00 am -
1 stop10h 04m
Deal found 10/1![Alaska Airlines logo]()
$466
This Delta deal was found by Cheapflights users on 9/28. 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 10/246:27 pm -
2 stops13h 12m
Sat 10/311:55 pm -
2 stops9h 34m
Deal found 9/28![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:30 pm -
1 stop6h 29m
Sun 10/185:00 am -
1 stop5h 46m
Deal found 10/1![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 9/30. 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 10/221:12 pm -
1 stop7h 53m
Sun 10/256:35 am -
1 stop9h 23m
Deal found 9/30![Delta logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 9/27. 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.
Thu 10/223:49 pm -
1 stop7h 10m
Mon 10/267:16 pm -
1 stop18h 10m
Deal found 9/27![Alaska Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 9/29. 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 12/152:33 pm -
1 stop6h 01m
Sat 1/26:50 am -
1 stop7h 35m
Deal found 9/29![United Airlines logo]()
$413
This Delta deal was found by Cheapflights users on 9/30. 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 10/231:12 pm -
1 stop7h 53m
Sun 10/256:35 am -
1 stop9h 23m
Deal found 9/30![Delta logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 9/30. 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 11/224:00 pm -
1 stop6h 59m
Fri 11/276:00 am -
1 stop10h 02m
Deal found 9/30![Alaska Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/142:42 pm -
1 stop5h 48m
Tue 11/178:40 am -
1 stop5h 49m
Deal found 9/30![United Airlines logo]()
$431
This Delta deal was found by Cheapflights users on 9/28. 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 11/62:00 pm -
2 stops8h 57m
Sun 11/86:35 am -
1 stop9h 23m
Deal found 9/28![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:55 pm -
1 stop5h 04m
Sun 11/87:00 am -
1 stop7h 29m
Deal found 10/1![United Airlines logo]()
$446
This Delta deal was found by Cheapflights users on 9/27. 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 12/47:00 am -
2 stops10h 06m
Mon 12/712:34 pm -
2 stops12h 52m
Deal found 9/27![Delta logo]()
$370
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 10/1![United Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 9/28. 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 10/213:36 pm -
1 stop4h 51m
Sat 10/244:00 pm -
1 stop7h 57m
Deal found 9/28![Delta logo]()
$379
This Gotogate deal was found by Cheapflights users on 9/28. 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 10/135:15 pm -
1 stop11h 25m
Sat 10/177:00 am -
1 stop10h 35m
Deal found 9/28![Alaska Airlines logo]()
$632
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/1310:45 am -
1 stop8h 37m
Sat 10/178:40 am -
Nonstop3h 48m
Deal found 9/28![United Airlines logo]()
$463
Last-minute flights from Montana to O'Hare IntlDiscover last-minute flight deals from Montana to O'Hare Intl. Data last updated October 2, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to O'Hare Intl. Data last updated October 2, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:28 pm -
Nonstop3h 02m
Sat 10/37:09 am -
1 stop6h 34m
Deal found 10/1![American Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:28 pm -
1 stop5h 50m
Sat 10/35:51 pm -
1 stop6h 00m
Deal found 10/1![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 9/30. 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 10/36:23 am -
1 stop7h 06m
Sun 10/48:25 am -
2 stops10h 28m
Deal found 9/30![Delta logo]()
$358
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:12 pm -
Nonstop3h 35m
Sat 10/2410:30 am -
Nonstop3h 57m
Deal found 9/30![American Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 9/28. 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 10/246:27 pm -
2 stops13h 12m
Sat 10/311:55 pm -
2 stops9h 34m
Deal found 9/28![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/255:00 am -
1 stop5h 19m
Sun 11/17:00 am -
1 stop7h 29m
Deal found 9/27![United Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:47 am -
1 stop16h 29m
Thu 10/295:15 pm -
1 stop17h 17m
Deal found 10/2![Multiple Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:48 pm -
Nonstop3h 37m
Tue 11/109:40 am -
Nonstop3h 56m
Deal found 9/30![American Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/29. 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 9/29![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 9/29. 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 11/141:21 pm -
2 stops9h 33m
Wed 11/187:30 am -
1 stop6h 11m
Deal found 9/29![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:55 pm -
1 stop5h 04m
Wed 11/253:56 pm -
1 stop6h 18m
Deal found 10/1![United Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 9/30. 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 11/235:35 am -
1 stop5h 28m
Thu 11/2611:18 am -
2 stops9h 24m
Deal found 9/30![Delta logo]()
$354
One-way flights from Montana to O'Hare IntlSearch for one-way flight options from Montana to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
Search for one-way flight options from Montana to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 11/18:39 pm -
3 stops50h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 10/267:59 pm -
3 stops51h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$144
This Alaska Airlines deal was found by Cheapflights users on 9/30. 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 10/2710:20 am -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Alaska Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 11/912:14 pm -
1 stop15h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$173
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:37 pm -
1 stop7h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![United Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:59 pm -
3 stops51h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$175
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/292:42 pm -
1 stop8h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/301:15 pm -
Nonstop3h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![American Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 10/258:39 pm -
1 stop31h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/3010:22 am -
1 stop17h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$179
This Delta deal was found by Cheapflights users on 9/30. 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 10/232:29 pm -
1 stop8h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Delta logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 10/2611:47 am -
1 stop16h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$181
Find flight deals from Montana to O'Hare Intl
Keep the following information in mind while searching for Montana to O'Hare Intl flight deals. Data was last updated October 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (Alaska Airlines) |
One-way from | $138 (Kiwi.com) |
Popular in | September |
Cheapest in | January |
Average price | $368 |
Good round-trip deal | $404 or less |
Good one-way deal | $265 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Montana 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 October 2, 2026.
Use the filters below to find and compare flights from Montana to Chicago O'Hare Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Fri 10/30
7:24 am-4:50 pm
1 stop8h 26m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$160
BillingsChicago
BIL Billings Logan Intl - ORD Chicago O'Hare Intl
BILORD
Billings Logan Intl
Fri 10/30
6:30 am-2:36 pm
1 stop7h 06m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
BillingsChicago
BIL Billings Logan Intl - ORD Chicago O'Hare Intl
BILORD
Billings Logan Intl
Sun 11/1
2:42 pm-9:30 pm
1 stop5h 48m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
Quickest round-trip
BillingsChicago
BIL Billings Logan Intl - ORD Chicago O'Hare Intl
BILORD
Billings Logan Intl
Wed 10/28
5:20 am-11:55 am
1 stop5h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
BillingsChicago
BIL Billings Logan Intl - ORD Chicago O'Hare Intl
BILORD
Billings Logan Intl
Tue 10/27
12:58 pm-10:05 pm
1 stop8h 07m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
BillingsChicago
BIL Billings Logan Intl - ORD Chicago O'Hare Intl
BILORD
Billings Logan Intl
Mon 1/4
12:58 pm-9:53 pm
1 stop7h 55m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Mon 11/2
3:34 pm-11:34 pm
1 stop7h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Fri 12/25
5:10 am-1:51 pm
1 stop7h 41m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Mon 12/28
5:10 am-12:59 pm
1 stop6h 49m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Sun 11/1
1:12 pm-10:05 pm
1 stop7h 53m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Montana to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Montana with our price prediction graph.
BIL-ORD
GTF-ORD
FCA-ORD
MSO-ORD
BZN-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 Montana to Chicago O'Hare Intl Airport
USMT-ORD
BIL-ORD
GTF-ORD
FCA-ORD
MSO-ORD
What is the cheapest month to book a flight from Montana to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Montana to Chicago O'Hare Intl Airport (average of $331). Flying from Montana to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $550). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from MT to ORD?
Find hourly flight availability from Montana 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 October 2, 2026.
When flying from Montana 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.
Weekly flight availability from Montana to Chicago O'Hare Intl Airport
Explore weekly flight availability from Montana to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 2, 2026.
The most flights from USMT to ORD are scheduled on a Thursday (9 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Montana to Chicago O'Hare Intl Airport?
Airfare is below average for this route at the moment.
Montana to Chicago O'Hare Intl Airport flights typically cost between $335 and $460 in October.The cheapest round-trip price found within the last 5 days was $319 on Alaska Airlines (Oct 28-Nov 3).
How far ahead should I book a flight from Montana to Chicago O'Hare Intl Airport?
The price you pay for your flight from Montana to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Related info for your journey
Find useful and relevant information for your journey from Montana 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
Lake Geneva
Naperville
Des Plaines
Glenview
Schaumburg
Oakbrook Terrace
Delavan
Oak Brook
Aurora
Libertyville
Rockford
Hoffman Estates
Beloit
Orland Park
South Holland
Elgin
Racine
Janesville
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
O'Hare Intl flight routes
Other flight options
Popular flights
Top destinations
Alternative routes for Montana to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to O'Hare Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Montana to O'Hare Intl by cabin class
Find flights from Montana to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 October 2, 2026.
Montana and O'Hare Intl flights
Browse other Montana and O'Hare Intl flight options. Last updated on October 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Montana to O'Hare Intl flights
Consider these flights traveling from Montana to O'Hare Intl.
Top 3 airlines flying from Montana to O'Hare Intl
Discover the top 3 airlines that operate flights from Montana 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 October 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$216 | Average$415 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$229 | Average$406 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$435 | FlexibilityNo cancel fee | On-time69% |