$99+ Cheap flights from Montana 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Sep 12 — Sep 191
Round-trip
1 adult, Economy
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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 August 13, 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 August 13, 2026.
This Delta deal was found by Cheapflights users on 8/12. 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.
Wed 10/143:34 pm -
1 stop7h 00m
Sat 10/177:35 am -
1 stop5h 32m
Deal found 8/12![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 8/10. 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 10/138:25 am -
2 stops12h 35m
Wed 10/141:55 pm -
2 stops11h 32m
Deal found 8/10![Delta logo]()
$227
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/306:00 am -
1 stop4h 55m
Tue 10/66:20 am -
1 stop7h 03m
Deal found 8/10![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 8/12. 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.
Fri 10/233:34 pm -
1 stop7h 00m
Tue 10/277:35 am -
1 stop5h 32m
Deal found 8/12![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 8/10. 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 10/138:25 am -
2 stops12h 35m
Mon 10/262:03 pm -
2 stops9h 34m
Deal found 8/10![Delta logo]()
$247
This Delta deal was found by Cheapflights users on 8/12. 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.
Fri 10/235:30 am -
1 stop5h 25m
Fri 10/237:15 pm -
1 stop6h 12m
Deal found 8/12![Delta logo]()
$261
This Delta deal was found by Cheapflights users on 8/11. 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 10/298:25 am -
1 stop7h 28m
Sun 11/17:00 am -
1 stop8h 58m
Deal found 8/11![Delta logo]()
$276
This Delta deal was found by Cheapflights users on 8/11. 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.
Fri 9/253:38 pm -
1 stop7h 19m
Fri 10/27:40 pm -
1 stop5h 39m
Deal found 8/11![Delta logo]()
$281
This Delta deal was found by Cheapflights users on 8/11. 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.
Wed 9/165:20 am -
1 stop5h 35m
Wed 9/235:50 pm -
1 stop6h 25m
Deal found 8/11![Delta logo]()
$281
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/262:28 pm -
1 stop6h 24m
Wed 9/305:00 am -
1 stop5h 46m
Deal found 8/12![United Airlines logo]()
$292
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/58:45 am -
Nonstop3h 10m
Fri 9/113:35 pm -
Nonstop3h 17m
Deal found 8/10![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/12. 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 11/125:45 am -
1 stop5h 18m
Tue 11/173:45 pm -
1 stop5h 09m
Deal found 8/12![Delta logo]()
$312
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 August 13, 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 August 13, 2026.
This Delta deal was found by Cheapflights users on 8/12. 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 10/221:12 pm -
1 stop7h 48m
Tue 10/275:27 am -
1 stop8h 54m
Deal found 8/12![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/58:45 am -
Nonstop3h 10m
Fri 9/113:35 pm -
Nonstop3h 17m
Deal found 8/10![United Airlines logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 11/72:02 pm -
1 stop8h 57m
Tue 11/107:00 am -
1 stop9h 27m
Deal found 8/11![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 8/12. 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.
Fri 10/233:34 pm -
1 stop7h 00m
Tue 10/277:35 am -
1 stop5h 32m
Deal found 8/12![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/306:00 am -
1 stop4h 55m
Tue 10/62:03 pm -
2 stops9h 34m
Deal found 8/10![Delta logo]()
$242
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/124:32 pm -
1 stop6h 27m
Sun 9/208:40 am -
Nonstop3h 23m
Deal found 8/10![United Airlines logo]()
$305
This United Airlines deal was found by Cheapflights users on 8/10. 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 11/132:37 pm -
1 stop7h 09m
Mon 11/164:20 pm -
1 stop6h 10m
Deal found 8/10![United Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 8/8. 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 9/166:23 am -
2 stops11h 22m
Wed 9/2312:29 pm -
2 stops11h 05m
Deal found 8/8![Delta logo]()
$291
This Delta deal was found by Cheapflights users on 8/13. 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 10/235:30 am -
1 stop5h 25m
Sun 10/257:00 am -
1 stop8h 58m
Deal found 8/13![Delta logo]()
$298
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/102:25 pm -
1 stop6h 35m
Wed 9/165:55 am -
1 stop8h 34m
Deal found 8/11![United Airlines logo]()
$328
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/43:58 pm -
Nonstop3h 42m
Sun 9/135:00 am -
1 stop6h 09m
Deal found 8/9![United Airlines logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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.
Tue 12/82:10 pm -
1 stop8h 49m
Sat 12/129:20 am -
2 stops15h 39m
Deal found 8/11![Alaska Airlines logo]()
$456
This Delta deal was found by Cheapflights users on 8/9. 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 9/268:25 am -
1 stop8h 35m
Sat 10/37:00 am -
1 stop8h 53m
Deal found 8/9![Delta logo]()
$315
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/172:31 pm -
1 stop8h 28m
Sun 9/204:00 pm -
Nonstop4h 04m
Deal found 8/11![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/163:38 pm -
1 stop7h 19m
Sat 9/1912:29 pm -
2 stops11h 20m
Deal found 8/10![Delta logo]()
$320
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:26 pm -
1 stop11h 14m
Mon 10/197:16 pm -
1 stop22h 33m
Deal found 8/12![Alaska Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/104:32 pm -
1 stop6h 27m
Wed 9/165:00 am -
1 stop5h 39m
Deal found 8/11![United Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/165:40 am -
1 stop5h 15m
Sat 9/1912:29 pm -
2 stops11h 08m
Deal found 8/10![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/162:29 pm -
1 stop6h 31m
Wed 9/235:00 am -
1 stop5h 41m
Deal found 8/8![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Wed 9/162:26 pm -
1 stop6h 34m
Sat 9/197:00 am -
1 stop7h 45m
Deal found 8/10![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/10. 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.
Fri 12/255:40 am -
1 stop5h 45m
Tue 1/53:50 pm -
1 stop5h 22m
Deal found 8/10![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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.
Fri 9/255:18 pm -
2 stops13h 10m
Sat 9/262:22 pm -
2 stops27h 19m
Deal found 8/11![Alaska Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 8/12. 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 10/75:19 pm -
1 stop5h 40m
Sun 10/116:00 am -
1 stop8h 32m
Deal found 8/12![United Airlines logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:18 pm -
1 stop17h 49m
Sun 9/278:17 pm -
2 stops21h 24m
Deal found 8/12![Alaska Airlines logo]()
$564
This Delta deal was found by Cheapflights users on 8/9. 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 10/101:18 pm -
1 stop7h 42m
Sat 10/177:35 am -
1 stop6h 03m
Deal found 8/9![Delta logo]()
$358
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:38 am -
1 stop7h 52m
Mon 9/145:00 am -
1 stop6h 02m
Deal found 8/9![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/9. 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 9/55:20 am -
2 stops9h 57m
Sat 9/128:25 am -
2 stops10h 28m
Deal found 8/9![Delta logo]()
$368
This Expedia deal was found by Cheapflights users on 8/8. 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 9/245:19 pm -
2 stops25h 56m
Mon 9/287:00 pm -
1 stop22h 39m
Deal found 8/8![Alaska Airlines logo]()
$600
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 9/511:43 am -
Nonstop3h 05m
Tue 9/85:00 am -
1 stop5h 41m
Deal found 8/11![United Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 8/10. 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.
Fri 9/256:21 pm -
2 stops14h 04m
Fri 10/211:17 am -
2 stops12h 20m
Deal found 8/10![Delta logo]()
$370
Last-minute flights from Montana to O'Hare IntlDiscover last-minute flight deals from Montana to O'Hare Intl. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to O'Hare Intl. Data last updated August 13, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/58:45 am -
Nonstop3h 10m
Fri 9/113:35 pm -
Nonstop3h 17m
Deal found 8/10![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/12. 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.
Fri 9/113:38 pm -
1 stop7h 19m
Mon 9/147:40 pm -
1 stop5h 39m
Deal found 8/12![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 8/10. 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.
Fri 9/113:38 pm -
1 stop7h 19m
Mon 9/217:00 am -
1 stop8h 53m
Deal found 8/10![Delta logo]()
$288
This Delta deal was found by Cheapflights users on 8/13. 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 9/158:25 am -
1 stop8h 36m
Sat 9/192:05 pm -
2 stops9h 44m
Deal found 8/13![Delta logo]()
$222
This Delta deal was found by Cheapflights users on 8/11. 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.
Wed 9/165:20 am -
1 stop5h 35m
Wed 9/235:50 pm -
1 stop6h 25m
Deal found 8/11![Delta logo]()
$281
This American Airlines deal was found by Cheapflights users on 8/9. 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 9/171:43 pm -
Nonstop3h 09m
Mon 9/2110:16 am -
Nonstop3h 27m
Deal found 8/9![American Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 8/11. 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.
Fri 9/258:25 am -
1 stop8h 36m
Sat 9/268:25 am -
2 stops9h 47m
Deal found 8/11![Delta logo]()
$244
This Delta deal was found by Cheapflights users on 8/11. 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.
Fri 9/253:38 pm -
1 stop7h 19m
Fri 10/27:40 pm -
1 stop5h 39m
Deal found 8/11![Delta logo]()
$281
This Delta deal was found by Cheapflights users on 8/12. 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 9/268:25 am -
1 stop8h 35m
Sat 10/36:40 am -
1 stop7h 58m
Deal found 8/12![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/262:28 pm -
1 stop6h 24m
Wed 9/305:00 am -
1 stop5h 46m
Deal found 8/12![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/306:00 am -
1 stop4h 55m
Tue 10/66:20 am -
1 stop7h 03m
Deal found 8/10![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/303:38 pm -
1 stop7h 19m
Mon 10/51:55 pm -
2 stops10h 24m
Deal found 8/10![Delta logo]()
$242
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 August 13, 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 August 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:46 pm -
1 stop31h 52m
Deal found 8/12![Multiple Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:43 pm -
1 stop31h 55m
Deal found 8/11![Multiple Airlines logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:18 pm -
1 stop8h 17m
Deal found 8/12![Multiple Airlines logo]()
$109
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 10/138:25 am -
1 stop7h 28m
Deal found 8/12![Delta logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:46 pm -
1 stop22h 11m
Deal found 8/12![Multiple Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:07 pm -
1 stop13h 50m
Deal found 8/12![Multiple Airlines logo]()
$116
This Delta deal was found by Cheapflights users on 8/11. 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.
Sat 9/126:00 am -
1 stop4h 55m
Deal found 8/11![Delta logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/139:49 pm -
1 stop30h 49m
Deal found 8/13![Multiple Airlines logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/139:42 pm -
1 stop30h 56m
Deal found 8/12![Multiple Airlines logo]()
$123
This Delta deal was found by Cheapflights users on 8/10. 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.
Sat 10/312:00 pm -
2 stops8h 52m
Deal found 8/10![Delta logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 stop16h 21m
Deal found 8/13![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:46 pm -
1 stop7h 52m
Deal found 8/12![Multiple Airlines logo]()
$127
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 August 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Delta) |
One-way from | $99 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $374 |
Good round-trip deal | $430 or less |
Good one-way deal | $246 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 2,558,603 searches. Data last updated August 13, 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
Thu 10/22
1:12 pm-10:00 pm
1 stop7h 48m
Chicago O'Hare Intl
Tue 10/27
5:27 am-1:21 pm
1 stop8h 54m
$217
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Fri 10/23
3:34 pm-11:34 pm
1 stop7h 00m
Chicago O'Hare Intl
Tue 10/27
7:35 am-12:07 pm
1 stop5h 32m
$239
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Wed 9/30
6:00 am-11:55 am
1 stop4h 55m
Chicago O'Hare Intl
Tue 10/6
2:03 pm-10:37 pm
2 stops9h 34m
$242
BillingsChicago
BIL Billings Logan Intl - ORD Chicago O'Hare Intl
BILORD
Billings Logan Intl
Wed 9/16
6:23 am-6:45 pm
2 stops11h 22m
Chicago O'Hare Intl
Wed 9/23
12:29 pm-10:34 pm
2 stops11h 05m
$291
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Fri 10/23
5:30 am-11:55 am
1 stop5h 25m
Chicago O'Hare Intl
Sun 10/25
7:00 am-2:58 pm
1 stop8h 58m
$298
Quickest round-trip
CodyChicago
COD Cody E.E. Faust - ORD Chicago O'Hare Intl
CODORD
Cody E.E. Faust
Sat 9/5
8:45 am-12:55 pm
Nonstop3h 10m
Chicago O'Hare Intl
Fri 9/11
3:35 pm-5:52 pm
Nonstop3h 17m
$299
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Sat 9/12
4:32 pm-11:59 pm
1 stop6h 27m
Chicago O'Hare Intl
Sun 9/20
8:40 am-11:03 am
Nonstop3h 23m
$305
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Fri 11/13
2:37 pm-10:46 pm
1 stop7h 09m
Chicago O'Hare Intl
Mon 11/16
4:20 pm-9:30 pm
1 stop6h 10m
$310
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Sat 9/26
8:25 am-6:00 pm
1 stop8h 35m
Chicago O'Hare Intl
Sat 10/3
7:00 am-2:53 pm
1 stop8h 53m
$315
BozemanChicago
BZN Bozeman Gallatin Field - ORD Chicago O'Hare Intl
BZNORD
Bozeman Gallatin Field
Wed 9/16
3:38 pm-11:57 pm
1 stop7h 19m
Chicago O'Hare Intl
Sat 9/19
12:29 pm-10:49 pm
2 stops11h 20m
$320
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.
BZN-ORD
COD-ORD
MSO-ORD
BIL-ORD
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 Montana to Chicago O'Hare Intl Airport
USMT-ORD
BZN-ORD
COD-ORD
MSO-ORD
BIL-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 $599). 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 August 13, 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 August 13, 2026.
The most flights from USMT to ORD are scheduled on a Wednesday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 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 $298 and $443 in October.The cheapest round-trip price found within the last 5 days was $217 on Delta (Oct 14-Oct 17).
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 64 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
Schaumburg
Naperville
Lake Geneva
Oak Brook
Oakbrook Terrace
Delavan
South Holland
Libertyville
Gurnee
Orland Park
Hoffman Estates
Beloit
Rockford
Aurora
Racine
Great Lakes
Janesville
Joliet
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Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 13, 2026.
Montana and O'Hare Intl flights
Browse other Montana and O'Hare Intl flight options. Last updated on August 13, 2026.
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Montana to O'Hare Intl flights
Consider these flights traveling from Montana to O'Hare Intl.
Top 4 airlines flying from Montana to O'Hare Intl
Discover the top 4 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 2,558,603 searches. Data last updated August 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$215 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$229 | Average$436 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$230 | Average$446 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$350 | Average$467 | FlexibilityNo cancel fee | On-time75% |