$92+ Cheap flights from Ontario (ONT) to Montana
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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Cheapest flights from Ontario to MontanaExplore the most affordable flight options available from Ontario to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from Ontario to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:10 pm
ONT
- BZN
1 stop3h 53m
Delta
Wed 7/155:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/15![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:10 pm
ONT
- BZN
1 stop3h 53m
Delta
Mon 7/135:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/16![Delta logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:23 am
ONT
- FCA
1 stop5h 00m
Alaska Airlines
Wed 10/287:45 pm
FCA
- ONT
1 stop4h 57m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
ONT
- BIL
1 stop23h 21m
Multiple Airlines
Mon 9/78:53 pm
BIL
- ONT
1 stop19h 16m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Wed 8/125:08 pm
ONT
- MSO
1 stop15h 26m
Multiple Airlines
Sun 8/1610:24 am
MSO
- ONT
1 stop22h 39m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:00 pm
ONT
- BZN
1 stop4h 15m
Southwest
Tue 7/217:00 pm
BZN
- ONT
1 stop4h 50m
Southwest
Deal found 6/15![Southwest logo]()
$291
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:00 am
ONT
- BZN
1 stop4h 17m
Delta
Tue 7/215:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/16![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
ONT
- FCA
1 stop4h 45m
Delta
Mon 8/105:15 am
FCA
- ONT
1 stop4h 37m
Delta
Deal found 6/18![Delta logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:12 pm
ONT
- FCA
1 stop18h 59m
Multiple Airlines
Mon 10/128:08 pm
FCA
- ONT
1 stop15h 13m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
ONT
- WYS
1 stop5h 26m
Delta
Tue 7/281:10 pm
WYS
- ONT
2 stops10h 42m
Delta
Deal found 6/18![Delta logo]()
$304
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:00 am
ONT
- FCA
1 stop6h 58m
Delta
Sun 7/196:10 pm
FCA
- ONT
1 stop6h 38m
Delta
Deal found 6/16![Delta logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:58 pm
ONT
- MSO
1 stop5h 01m
Multiple Airlines
Sun 9/209:49 pm
MSO
- ONT
1 stop13h 32m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$310
Best flights from Ontario to MontanaDiscover carefully curated flight deals from Ontario to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from Ontario to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:10 pm
ONT
- BZN
1 stop3h 53m
Delta
Fri 8/146:00 am
BZN
- ONT
1 stop3h 52m
Delta
Deal found 6/16![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:23 am
ONT
- FCA
1 stop5h 00m
Alaska Airlines
Wed 10/287:45 pm
FCA
- ONT
1 stop4h 57m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/181:25 pm
ONT
- BZN
2 stops8h 30m
Southwest
Thu 7/237:15 pm
BZN
- ONT
1 stop5h 20m
Southwest
Deal found 6/15![Southwest logo]()
$340
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:56 pm
ONT
- BIL
2 stops7h 57m
United Airlines
Wed 9/237:00 am
BIL
- ONT
1 stop6h 50m
United Airlines
Deal found 6/15![United Airlines logo]()
$396
This Delta deal was found by Cheapflights users on 6/13. 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.
Sat 7/115:10 pm
ONT
- FCA
1 stop4h 43m
Delta
Sun 7/195:25 am
FCA
- ONT
1 stop4h 22m
Delta
Deal found 6/13![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:23 am
ONT
- BZN
1 stop4h 59m
Alaska Airlines
Sat 10/248:00 am
BZN
- ONT
1 stop6h 21m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:13 pm
ONT
- HLN
1 stop4h 11m
Delta
Mon 9/287:15 am
HLN
- ONT
1 stop5h 55m
Delta
Deal found 6/14![Delta logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:14 pm
ONT
- BIL
1 stop7h 15m
Alaska Airlines
Wed 9/236:14 am
BIL
- ONT
1 stop6h 02m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$335
This Southwest deal was found by Cheapflights users on 6/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:15 am
ONT
- BZN
2 stops8h 50m
Southwest
Sun 8/166:30 am
BZN
- ONT
1 stop4h 00m
Southwest
Deal found 6/13![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:00 am
ONT
- BIL
1 stop7h 22m
United Airlines
Wed 8/127:00 am
BIL
- ONT
1 stop6h 50m
United Airlines
Deal found 6/14![United Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:05 pm
ONT
- BZN
1 stop5h 59m
Delta
Sun 8/166:00 am
BZN
- ONT
1 stop3h 52m
Delta
Deal found 6/17![Delta logo]()
$335
This Alaska Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:05 pm
ONT
- BZN
1 stop18h 19m
Alaska Airlines
Mon 8/313:35 pm
BZN
- ONT
1 stop5h 49m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/205:10 pm
ONT
- BZN
1 stop6h 13m
Delta
Sun 7/265:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/18![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:18 pm
ONT
- COD
1 stop8h 27m
United Airlines
Wed 9/210:40 am
COD
- ONT
2 stops10h 21m
United Airlines
Deal found 6/13![United Airlines logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:13 pm
ONT
- MSO
1 stop6h 46m
Alaska Airlines
Sat 10/242:06 pm
MSO
- ONT
1 stop4h 57m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$361
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/211:06 pm
ONT
- BZN
1 stop4h 39m
Delta
Mon 8/246:00 am
BZN
- ONT
1 stop3h 52m
Delta
Deal found 6/16![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Wed 9/21:55 pm
WYS
- ONT
1 stop7h 58m
United Airlines
Deal found 6/15![United Airlines logo]()
$433
This Alaska Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:13 pm
ONT
- HLN
1 stop24h 58m
Alaska Airlines
Sat 10/244:48 pm
HLN
- ONT
1 stop7h 57m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 6/13. 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 7/315:10 pm
ONT
- BZN
1 stop6h 13m
Delta
Fri 8/77:39 pm
BZN
- ONT
1 stop4h 55m
Delta
Deal found 6/13![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 6/13. 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.
Wed 11/255:05 pm
ONT
- BIL
1 stop4h 27m
Delta
Sun 11/296:25 pm
BIL
- ONT
1 stop6h 23m
Delta
Deal found 6/13![Delta logo]()
$361
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Fri 10/92:02 pm
WYS
- ONT
1 stop7h 56m
United Airlines
Deal found 6/13![United Airlines logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 6/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:07 pm
ONT
- BIL
1 stop7h 22m
Alaska Airlines
Sat 8/296:14 am
BIL
- ONT
2 stops11h 56m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am
ONT
- BIL
1 stop4h 07m
Delta
Sun 9/66:24 pm
BIL
- ONT
1 stop4h 59m
Delta
Deal found 6/16![Delta logo]()
$361
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Sun 8/164:44 pm
WYS
- ONT
1 stop5h 09m
United Airlines
Deal found 6/15![United Airlines logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:07 pm
ONT
- FCA
1 stop6h 49m
Alaska Airlines
Tue 9/16:15 am
FCA
- ONT
1 stop5h 49m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$431
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/176:00 am
ONT
- BIL
1 stop4h 09m
Delta
Tue 7/215:20 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 6/17![Delta logo]()
$361
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Sun 8/234:44 pm
WYS
- ONT
2 stops20h 28m
United Airlines
Deal found 6/16![United Airlines logo]()
$514
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/129:40 am
ONT
- BIL
1 stop7h 12m
Delta
Sun 7/195:20 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 6/14![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:12 am
ONT
- MSO
1 stop5h 13m
Alaska Airlines
Wed 9/27:15 am
MSO
- ONT
2 stops9h 32m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/111:18 pm
ONT
- COD
1 stop8h 25m
United Airlines
Tue 7/145:15 am
COD
- ONT
1 stop16h 27m
United Airlines
Deal found 6/15![United Airlines logo]()
$519
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated June 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:10 pm
ONT
- BZN
1 stop3h 53m
Delta
Wed 7/155:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/15![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:10 pm
ONT
- BZN
1 stop3h 53m
Delta
Mon 7/135:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/16![Delta logo]()
$272
This Delta deal was found by Cheapflights users on 6/13. 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.
Sat 7/115:10 pm
ONT
- FCA
1 stop4h 43m
Delta
Sun 7/195:25 am
FCA
- ONT
1 stop4h 22m
Delta
Deal found 6/13![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 6/13. 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.
Sun 7/126:00 am
ONT
- FCA
1 stop4h 26m
Delta
Sun 7/195:25 am
FCA
- ONT
1 stop4h 22m
Delta
Deal found 6/13![Delta logo]()
$328
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 pm
ONT
- HLN
1 stop4h 29m
Delta
Tue 7/215:40 am
HLN
- ONT
1 stop4h 07m
Delta
Deal found 6/14![Delta logo]()
$333
This Priceline deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/152:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Tue 7/216:03 am
BZN
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:00 pm
ONT
- BZN
1 stop4h 15m
Southwest
Tue 7/217:00 pm
BZN
- ONT
1 stop4h 50m
Southwest
Deal found 6/15![Southwest logo]()
$291
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:00 am
ONT
- BZN
1 stop4h 17m
Delta
Tue 7/215:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/16![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/205:10 pm
ONT
- BZN
1 stop6h 13m
Delta
Sun 7/265:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/18![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
ONT
- WYS
1 stop5h 26m
Delta
Tue 7/281:10 pm
WYS
- ONT
2 stops10h 42m
Delta
Deal found 6/18![Delta logo]()
$304
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:10 pm
ONT
- BZN
1 stop6h 13m
Delta
Sun 8/25:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 6/17![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:10 pm
ONT
- BIL
1 stop4h 40m
Delta
Thu 7/305:20 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 6/14![Delta logo]()
$311
One-way flights from Ontario to MontanaSearch for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:40 pm
ONT
- MSO
1 stop16h 54m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:27 pm
ONT
- BZN
1 stop15h 39m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$110
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
ONT
- BZN
1 stop4h 17m
Delta
Deal found 6/15![Delta logo]()
$136
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:10 pm
ONT
- FCA
1 stop4h 43m
Delta
Deal found 6/14![Delta logo]()
$139
This Booking.com deal was found by Cheapflights users on 6/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:20 pm
ONT
- BZN
1 stop11h 26m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Fri 7/33:34 pm
ONT
- BZN
2 stops20h 16m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$155
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:05 pm
ONT
- MSO
1 stop6h 13m
Delta
Deal found 6/14![Delta logo]()
$156
This Priceline deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/272:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$156
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 am
ONT
- BIL
1 stop4h 09m
Delta
Deal found 6/17![Delta logo]()
$156
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
ONT
- FCA
1 stop4h 45m
Delta
Deal found 6/18![Delta logo]()
$159
This Delta deal was found by Cheapflights users on 6/13. 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.
Sun 7/196:00 am
ONT
- BZN
1 stop4h 17m
Delta
Deal found 6/13![Delta logo]()
$160
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:05 pm
ONT
- BZN
1 stop18h 19m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$161
Find flight deals from Ontario to Montana
Keep the following information in mind while searching for Ontario to Montana flight deals. Data was last updated June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $271 (Delta) |
One-way from | $92 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $395 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Montana that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from Ontario to Montana that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sat 8/1
5:10 pm-10:03 pm
1 stop3h 53m
Bozeman Gallatin Field
Fri 8/14
6:00 am-8:52 am
1 stop3h 52m
$271
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Sat 10/24
7:23 am-1:23 pm
1 stop5h 00m
Kalispell Glacier Park
Wed 10/28
7:45 pm-11:42 pm
1 stop4h 57m
$277
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Sat 7/11
5:10 pm-10:53 pm
1 stop4h 43m
Kalispell Glacier Park
Sun 7/19
5:25 am-8:47 am
1 stop4h 22m
$277
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Wed 10/21
7:23 am-1:22 pm
1 stop4h 59m
Bozeman Gallatin Field
Sat 10/24
8:00 am-1:21 pm
1 stop6h 21m
$311
OntarioHelena
ONT - HLN
ONTHLN
Ontario
Thu 9/24
5:13 pm-10:24 pm
1 stop4h 11m
Helena
Mon 9/28
7:15 am-12:10 pm
1 stop5h 55m
$319
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 9/22
3:14 pm-11:29 pm
1 stop7h 15m
Billings Logan Intl
Wed 9/23
6:14 am-11:16 am
1 stop6h 02m
$335
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Thu 8/13
5:05 pm-12:04 am
1 stop5h 59m
Bozeman Gallatin Field
Sun 8/16
6:00 am-8:52 am
1 stop3h 52m
$335
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 7/20
5:10 pm-12:23 am
1 stop6h 13m
Bozeman Gallatin Field
Sun 7/26
5:15 am-8:47 am
1 stop4h 32m
$335
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 8/24
6:05 pm-1:24 pm
1 stop18h 19m
Bozeman Gallatin Field
Mon 8/31
3:35 pm-8:24 pm
1 stop5h 49m
$339
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sat 7/18
1:25 pm-10:55 pm
2 stops8h 30m
Bozeman Gallatin Field
Thu 7/23
7:15 pm-11:35 pm
1 stop5h 20m
$340
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Montana
Have a flexible travel schedule? Discover the best time to fly to Montana from Ontario with our price prediction graph.
ONT-BZN
ONT-MSO
ONT-BIL
ONT-FCA
ONT-SDY
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 Ontario to Montana
ONT-USMT
ONT-BZN
ONT-MSO
ONT-BIL
ONT-FCA
What is the cheapest month to book a flight from Ontario to Montana?
Currently, July is the cheapest month in which you can book a flight from Ontario to Montana (average of $120). Flying from Ontario to Montana in March is currently the most expensive (average of $339). 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.
How much does it cost to fly round-trip from Ontario to Montana?
Reviews of airlines servicing Montana
Get insights into the airlines that provide service to Montana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montana. Reviews last updated June 18, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Ontario to Montana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from Ontario to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Montana
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Montana by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Montana by cabin class
Find flights from Ontario to Montana, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Montana flights
Browse other Ontario and Montana flight options. Last updated on June 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Montana flights
Consider these flights traveling from Ontario to Montana.
Top 4 airlines flying from Ontario to Montana
Discover the top 4 airlines that operate flights from Ontario to Montana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$424 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$189 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$230 | Average$488 | FlexibilityNo cancel fee | On-time63% |