$103+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Apr 11 — Apr 181
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 March 12, 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 March 12, 2026.
This American Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/21:49 pm
BZN
- ORD
Nonstop3h 09m
American Airlines
Sat 4/47:09 pm
ORD
- BZN
Nonstop3h 29m
American Airlines
Deal found 3/7![American Airlines logo]()
$227
This Expedia deal was found by Cheapflights users on 3/8. 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.
Wed 4/1512:40 pm
BZN
- ORD
1 stop24h 41m
Alaska Airlines
Tue 4/216:00 am
ORD
- BZN
1 stop13h 46m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 3/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:15 am
BZN
- ORD
1 stop6h 40m
Southwest
Sat 4/253:05 pm
ORD
- BZN
1 stop7h 35m
Southwest
Deal found 3/8![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:59 pm
BZN
- ORD
1 stop9h 41m
Alaska Airlines
Wed 4/296:00 am
ORD
- BZN
1 stop14h 19m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 3/8. 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.
Thu 4/1611:59 am
BZN
- ORD
1 stop5h 05m
Delta
Sat 4/187:15 am
ORD
- BZN
1 stop8h 20m
Delta
Deal found 3/8![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 3/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:36 pm
BZN
- ORD
Nonstop3h 09m
American Airlines
Mon 4/67:09 pm
ORD
- BZN
Nonstop3h 29m
American Airlines
Deal found 3/8![American Airlines logo]()
$249
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Mon 4/65:51 pm
BIL
- ORD
1 stop5h 38m
United Airlines
Fri 4/102:35 pm
ORD
- BIL
1 stop7h 22m
United Airlines
Deal found 3/10![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/95:35 am
BIL
- ORD
1 stop5h 17m
Delta
Wed 5/132:00 pm
ORD
- BIL
2 stops10h 06m
Delta
Deal found 3/7![Delta logo]()
$256
This United Airlines deal was found by Cheapflights users on 3/8. 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 5/272:26 pm
BZN
- ORD
1 stop7h 23m
United Airlines
Tue 6/25:00 am
ORD
- BZN
1 stop5h 37m
United Airlines
Deal found 3/8![United Airlines logo]()
$264
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/231:43 pm
BZN
- ORD
1 stop9h 05m
American Airlines
Sat 4/256:57 am
ORD
- BZN
1 stop6h 56m
American Airlines
Deal found 3/9![American Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 3/8. 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 5/2712:35 pm
FCA
- ORD
Nonstop3h 30m
United Airlines
Sat 5/308:40 am
ORD
- FCA
Nonstop3h 49m
United Airlines
Deal found 3/8![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 3/9. 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 10/291:29 pm
MSO
- ORD
Nonstop3h 31m
American Airlines
Mon 11/29:50 am
ORD
- MSO
Nonstop3h 49m
American Airlines
Deal found 3/9![American Airlines logo]()
$269
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 March 12, 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 March 12, 2026.
This Delta deal was found by Cheapflights users on 3/8. 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.
Thu 4/2311:59 am
BZN
- ORD
1 stop5h 05m
Delta
Sat 4/257:15 am
ORD
- BZN
1 stop8h 20m
Delta
Deal found 3/8![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/94:19 pm
BZN
- ORD
1 stop7h 11m
United Airlines
Sun 4/129:05 am
ORD
- BZN
Nonstop3h 24m
United Airlines
Deal found 3/10![United Airlines logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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.
Sun 4/263:36 pm
BZN
- ORD
1 stop20h 37m
Alaska Airlines
Wed 4/298:00 am
ORD
- BZN
1 stop12h 19m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/95:35 am
BIL
- ORD
1 stop5h 17m
Delta
Wed 5/132:00 pm
ORD
- BIL
2 stops10h 06m
Delta
Deal found 3/7![Delta logo]()
$256
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/195:08 pm
MSO
- ORD
1 stop5h 49m
United Airlines
Sat 5/238:40 am
ORD
- MSO
Nonstop3h 52m
United Airlines
Deal found 3/7![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 3/8. 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.
Sun 4/267:18 am
BZN
- ORD
1 stop8h 21m
Delta
Wed 4/295:15 am
ORD
- BZN
1 stop9h 21m
Delta
Deal found 3/8![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:55 pm
MSO
- ORD
1 stop7h 04m
Alaska Airlines
Wed 4/296:00 am
ORD
- MSO
1 stop9h 59m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/285:20 pm
MSO
- ORD
1 stop6h 24m
United Airlines
Tue 6/28:40 am
ORD
- MSO
Nonstop3h 52m
United Airlines
Deal found 3/7![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 3/8. 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.
Thu 4/93:19 pm
BZN
- ORD
1 stop7h 33m
Delta
Mon 4/138:50 am
ORD
- BZN
1 stop4h 44m
Delta
Deal found 3/8![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/147:00 am
BZN
- ORD
1 stop15h 59m
Alaska Airlines
Wed 4/156:00 am
ORD
- BZN
1 stop18h 57m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:43 am
BIL
- ORD
Nonstop3h 05m
United Airlines
Wed 8/195:00 am
ORD
- BIL
1 stop5h 41m
United Airlines
Deal found 3/11![United Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/22:25 pm
MSO
- ORD
1 stop7h 54m
United Airlines
Tue 7/76:00 am
ORD
- MSO
1 stop8h 19m
United Airlines
Deal found 3/7![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/65:59 am
BZN
- ORD
1 stop4h 35m
Delta
Sun 5/107:45 am
ORD
- BZN
1 stop5h 32m
Delta
Deal found 3/7![Delta logo]()
$314
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/274:45 pm
FCA
- ORD
Nonstop3h 49m
Alaska Airlines
Sat 5/301:16 pm
ORD
- FCA
Nonstop3h 47m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 4/176:15 am
MSO
- ORD
1 stop5h 57m
United Airlines
Tue 4/212:35 pm
ORD
- MSO
1 stop7h 55m
United Airlines
Deal found 3/8![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/73:19 pm
BZN
- ORD
1 stop8h 21m
Delta
Wed 4/83:59 pm
ORD
- BZN
2 stops8h 11m
Delta
Deal found 3/7![Delta logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 4/186:22 pm
HLN
- ORD
1 stop11h 17m
Alaska Airlines
Wed 4/226:00 am
ORD
- HLN
1 stop12h 45m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 5/205:51 pm
BIL
- ORD
1 stop6h 07m
United Airlines
Mon 5/255:00 am
ORD
- BIL
1 stop5h 35m
United Airlines
Deal found 3/9![United Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 3/11. 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 5/75:40 am
GTF
- ORD
2 stops11h 25m
Delta
Sun 5/102:00 pm
ORD
- GTF
2 stops9h 26m
Delta
Deal found 3/11![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 8/74:29 pm
BZN
- ORD
1 stop5h 50m
United Airlines
Sun 8/95:00 am
ORD
- BZN
1 stop5h 29m
United Airlines
Deal found 3/11![United Airlines logo]()
$306
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/256:15 pm
GTF
- ORD
1 stop28h 44m
Alaska Airlines
Wed 4/298:48 pm
ORD
- GTF
1 stop21h 47m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 3/9. 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.
Thu 5/285:45 am
HLN
- ORD
1 stop5h 07m
Delta
Tue 6/27:45 am
ORD
- HLN
1 stop5h 38m
Delta
Deal found 3/9![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 3/8. 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 6/32:20 pm
HLN
- ORD
1 stop6h 19m
United Airlines
Sat 6/136:00 am
ORD
- HLN
1 stop8h 33m
United Airlines
Deal found 3/8![United Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:20 pm
MSO
- ORD
1 stop6h 24m
United Airlines
Sun 6/78:40 am
ORD
- MSO
Nonstop3h 52m
United Airlines
Deal found 3/10![United Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 3/9. 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.
Tue 3/241:02 pm
HLN
- ORD
1 stop7h 32m
Delta
Sat 3/287:20 am
ORD
- HLN
1 stop6h 01m
Delta
Deal found 3/9![Delta logo]()
$359
This Expedia deal was found by Cheapflights users on 3/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:22 pm
HLN
- ORD
2 stops17h 51m
Alaska Airlines
Mon 4/136:00 am
ORD
- HLN
1 stop12h 45m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$466
This United Airlines deal was found by Cheapflights users on 3/9. 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 5/82:33 pm
FCA
- ORD
1 stop8h 24m
United Airlines
Tue 5/122:20 pm
ORD
- FCA
1 stop8h 37m
United Airlines
Deal found 3/9![United Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 3/9. 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.
Tue 3/245:30 am
GTF
- ORD
1 stop5h 48m
Delta
Sat 3/285:00 pm
ORD
- GTF
1 stop6h 30m
Delta
Deal found 3/9![Delta logo]()
$373
This Travelocity deal was found by Cheapflights users on 3/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:43 pm
HLN
- ORD
2 stops26h 24m
Alaska Airlines
Sat 6/135:39 pm
ORD
- HLN
1 stop24h 10m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:00 pm
BIL
- ORD
1 stop5h 44m
United Airlines
Tue 8/47:52 pm
ORD
- BIL
Nonstop3h 23m
United Airlines
Deal found 3/11![United Airlines logo]()
$334
Last-minute flights from Montana to O'Hare IntlDiscover last-minute flight deals from Montana to O'Hare Intl. Data last updated March 12, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to O'Hare Intl. Data last updated March 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 3/248:00 am
BZN
- ORD
Nonstop3h 03m
United Airlines
Tue 3/317:40 pm
ORD
- BZN
Nonstop3h 25m
United Airlines
Deal found 3/7![United Airlines logo]()
$274
This American Airlines deal was found by Cheapflights users on 3/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:36 pm
BZN
- ORD
Nonstop3h 09m
American Airlines
Mon 4/67:09 pm
ORD
- BZN
Nonstop3h 29m
American Airlines
Deal found 3/8![American Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/21:49 pm
BZN
- ORD
Nonstop3h 09m
American Airlines
Sat 4/47:09 pm
ORD
- BZN
Nonstop3h 29m
American Airlines
Deal found 3/7![American Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 3/8. 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.
Thu 4/211:50 am
BZN
- ORD
1 stop5h 15m
Delta
Sat 4/45:00 pm
ORD
- BZN
1 stop6h 19m
Delta
Deal found 3/8![Delta logo]()
$272
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Mon 4/65:51 pm
BIL
- ORD
1 stop5h 38m
United Airlines
Fri 4/102:35 pm
ORD
- BIL
1 stop7h 22m
United Airlines
Deal found 3/10![United Airlines logo]()
$249
This Expedia deal was found by Cheapflights users on 3/8. 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.
Wed 4/1512:40 pm
BZN
- ORD
1 stop24h 41m
Alaska Airlines
Tue 4/216:00 am
ORD
- BZN
1 stop13h 46m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 3/8. 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.
Thu 4/1611:59 am
BZN
- ORD
1 stop5h 05m
Delta
Sat 4/187:15 am
ORD
- BZN
1 stop8h 20m
Delta
Deal found 3/8![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/172:40 pm
BZN
- ORD
1 stop7h 14m
United Airlines
Sun 4/197:00 am
ORD
- BZN
1 stop7h 34m
United Airlines
Deal found 3/7![United Airlines logo]()
$264
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 4/171:08 pm
MSO
- ORD
Nonstop3h 43m
American Airlines
Tue 4/219:40 am
ORD
- MSO
Nonstop3h 58m
American Airlines
Deal found 3/9![American Airlines logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:59 pm
BZN
- ORD
1 stop9h 41m
Alaska Airlines
Wed 4/296:00 am
ORD
- BZN
1 stop14h 19m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 3/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:15 am
BZN
- ORD
1 stop6h 40m
Southwest
Sat 4/253:05 pm
ORD
- BZN
1 stop7h 35m
Southwest
Deal found 3/8![Southwest logo]()
$242
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/231:43 pm
BZN
- ORD
1 stop9h 05m
American Airlines
Sat 4/256:57 am
ORD
- BZN
1 stop6h 56m
American Airlines
Deal found 3/9![American Airlines logo]()
$269
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 March 12, 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 March 12, 2026.
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 5/168:30 am
BZN
- ORD
Nonstop3h 12m
United Airlines
Deal found 3/8![United Airlines logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:54 pm
MSO
- ORD
1 stop8h 53m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:09 pm
BZN
- ORD
1 stop28h 32m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/138:54 pm
MSO
- ORD
1 stop8h 26m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$110
This Delta deal was found by Cheapflights users on 3/8. 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.
Sat 5/95:35 am
BZN
- ORD
1 stop5h 17m
Delta
Deal found 3/8![Delta logo]()
$113
This Delta deal was found by Cheapflights users on 3/9. 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.
Sun 4/511:34 am
BIL
- ORD
1 stop5h 31m
Delta
Deal found 3/9![Delta logo]()
$115
This Southwest deal was found by Cheapflights users on 3/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:10 am
BZN
- ORD
2 stops11h 15m
Southwest
Deal found 3/8![Southwest logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1110:34 am
BIL
- ORD
1 stop19h 13m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$120
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:59 pm
BZN
- ORD
1 stop9h 41m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:54 pm
MSO
- ORD
2 stops36h 50m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$123
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Tue 3/318:10 am
BZN
- ORD
Nonstop3h 10m
United Airlines
Deal found 3/8![United Airlines logo]()
$125
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:35 pm
BIL
- ORD
1 stop7h 19m
United Airlines
Deal found 3/10![United Airlines logo]()
$125
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 March 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $227 (American Airlines) |
One-way from | $103 (United Airlines) |
Popular in | May |
Cheapest in | September |
Average price | $279 |
Good round-trip deal | $318 or less |
Good one-way deal | $198 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 March 12, 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 - ORD
BZNORD
Bozeman Gallatin Field
Thu 4/23
11:59 am-6:04 pm
1 stop5h 05m
Chicago O'Hare Intl
Sat 4/25
7:15 am-2:35 pm
1 stop8h 20m
$247
BillingsChicago
BIL - ORD
BILORD
Billings Logan Intl
Sat 5/9
5:35 am-11:52 am
1 stop5h 17m
Chicago O'Hare Intl
Wed 5/13
2:00 pm-11:06 pm
2 stops10h 06m
$256
BozemanChicago
BZN - ORD
BZNORD
Bozeman Gallatin Field
Sun 4/26
7:18 am-4:39 pm
1 stop8h 21m
Chicago O'Hare Intl
Wed 4/29
5:15 am-1:36 pm
1 stop9h 21m
$269
BozemanChicago
BZN - ORD
BZNORD
Bozeman Gallatin Field
Thu 4/9
3:19 pm-11:52 pm
1 stop7h 33m
Chicago O'Hare Intl
Mon 4/13
8:50 am-12:34 pm
1 stop4h 44m
$269
BozemanChicago
BZN - ORD
BZNORD
Bozeman Gallatin Field
Thu 4/9
4:19 pm-12:30 am
1 stop7h 11m
Chicago O'Hare Intl
Sun 4/12
9:05 am-11:29 am
Nonstop3h 24m
$279
MissoulaChicago
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Tue 5/19
5:08 pm-11:57 pm
1 stop5h 49m
Chicago O'Hare Intl
Sat 5/23
8:40 am-11:32 am
Nonstop3h 52m
$279
MissoulaChicago
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Thu 5/28
5:20 pm-12:44 am
1 stop6h 24m
Chicago O'Hare Intl
Tue 6/2
8:40 am-11:32 am
Nonstop3h 52m
$279
BillingsChicago
BIL - ORD
BILORD
Billings Logan Intl
Tue 8/11
11:43 am-3:48 pm
Nonstop3h 05m
Chicago O'Hare Intl
Wed 8/19
5:00 am-9:41 am
1 stop5h 41m
$282
BozemanChicago
BZN - ORD
BZNORD
Bozeman Gallatin Field
Sun 4/26
3:36 pm-1:13 pm
1 stop20h 37m
Chicago O'Hare Intl
Wed 4/29
8:00 am-7:19 pm
1 stop12h 19m
$289
MissoulaChicago
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Thu 7/2
2:25 pm-11:19 pm
1 stop7h 54m
Chicago O'Hare Intl
Tue 7/7
6:00 am-1:19 pm
1 stop8h 19m
$289
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
BIL-ORD
MSO-ORD
FCA-ORD
HLN-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
BIL-ORD
MSO-ORD
FCA-ORD
What is the cheapest month to book a flight from Montana to Chicago O'Hare Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Montana to Chicago O'Hare Intl Airport (average of $169). Flying from Montana to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $298). 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 March 12, 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 March 12, 2026.
The most flights from USMT to ORD are scheduled on a Monday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).
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 locationsSchaumburg
Rosemont
Gurnee
Naperville
Lake Geneva
Hoffman Estates
Delavan
Downers Grove
Des Plaines
Elgin
Elk Grove Village
Skokie
Oak Brook
South Holland
Beloit
Libertyville
Waukegan
Warrenville
Bridgeview
Oakbrook Terrace
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.
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Alternative routes for Montana to O'Hare Intl
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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 March 12, 2026.
Montana and O'Hare Intl flights
Browse other Montana and O'Hare Intl flight options. Last updated on March 12, 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 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 March 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$191 | Average$330 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$229 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$230 | Average$399 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$469 | FlexibilityNo cancel fee | On-time75% |