$136+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jun 22 — Jun 291
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Montana with Cheapflights
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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 May 23, 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 May 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 7/153:40 pm
ONT
- BZN
1 stop23h 18m
Multiple Airlines
Sun 7/194:48 pm
BZN
- ONT
1 stop16h 15m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$240
This Delta deal was found by Cheapflights users on 5/18. 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 8/156:00 am
ONT
- BZN
1 stop5h 05m
Delta
Sun 8/167:39 pm
BZN
- ONT
1 stop4h 55m
Delta
Deal found 5/18![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 8/69:43 am
ONT
- FCA
1 stop6h 46m
Delta
Sun 8/95:10 am
FCA
- ONT
1 stop4h 38m
Delta
Deal found 5/20![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 8/126:02 am
ONT
- BZN
1 stop7h 07m
Alaska Airlines
Mon 8/176:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 8/1312:55 pm
ONT
- BZN
1 stop4h 44m
Delta
Mon 8/176:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/19![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/65:55 pm
ONT
- FCA
1 stop4h 19m
Delta
Tue 6/95:19 am
FCA
- ONT
1 stop4h 31m
Delta
Deal found 5/21![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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.
Sat 6/611:59 pm
ONT
- FCA
1 stop10h 35m
American Airlines
Mon 6/83:51 pm
FCA
- ONT
1 stop7h 48m
American Airlines
Deal found 5/20![American Airlines logo]()
$300
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 11/56:00 am
ONT
- FCA
1 stop5h 20m
Alaska Airlines
Sun 11/86:34 pm
FCA
- ONT
1 stop5h 20m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 6/166:00 am
ONT
- WYS
1 stop5h 28m
Delta
Tue 6/231:10 pm
WYS
- ONT
2 stops10h 31m
Delta
Deal found 5/22![Delta logo]()
$304
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/24:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Wed 6/38:00 am
BZN
- ONT
1 stop8h 09m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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
- FCA
1 stop4h 43m
Delta
Sun 8/95:10 am
FCA
- ONT
1 stop4h 38m
Delta
Deal found 5/19![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/253:00 pm
ONT
- BZN
1 stop5h 55m
Southwest
Fri 7/316:10 am
BZN
- ONT
2 stops6h 10m
Southwest
Deal found 5/21![Southwest 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 May 23, 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 May 23, 2026.
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 8/75:06 pm
ONT
- BZN
1 stop5h 58m
Delta
Mon 8/106:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/21![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 11/56:00 am
ONT
- FCA
1 stop5h 20m
Alaska Airlines
Sun 11/86:34 pm
FCA
- ONT
1 stop5h 20m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 5/305:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Tue 6/22:19 pm
WYS
- ONT
1 stop7h 27m
United Airlines
Deal found 5/20![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/44:57 pm
ONT
- BZN
1 stop6h 02m
Delta
Sun 6/75:15 am
BZN
- ONT
1 stop4h 35m
Delta
Deal found 5/20![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:43 am
ONT
- BZN
1 stop3h 43m
Delta
Sun 8/167:39 pm
BZN
- ONT
1 stop4h 55m
Delta
Deal found 5/18![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 6/212:04 pm
ONT
- BZN
1 stop6h 01m
Alaska Airlines
Wed 6/106:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 8/215:06 pm
ONT
- BZN
1 stop5h 58m
Delta
Mon 8/246:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/22![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:06 pm
ONT
- BZN
1 stop5h 58m
Delta
Mon 8/176:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/18![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/105:54 pm
ONT
- MSO
1 stop5h 02m
Alaska Airlines
Tue 6/165:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:06 pm
ONT
- BZN
1 stop5h 58m
Delta
Tue 8/186:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/18![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 8/223:05 pm
ONT
- MSO
1 stop6h 51m
Alaska Airlines
Wed 8/262:05 pm
MSO
- ONT
1 stop5h 58m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:06 pm
ONT
- BZN
1 stop5h 58m
Delta
Tue 8/186:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/18![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 5/275:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Thu 6/42:19 pm
WYS
- ONT
1 stop7h 27m
United Airlines
Deal found 5/23![United Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:43 am
ONT
- BZN
1 stop4h 26m
Delta
Sun 8/167:39 pm
BZN
- ONT
1 stop4h 55m
Delta
Deal found 5/18![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 5/285:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Thu 6/42:19 pm
WYS
- ONT
1 stop7h 27m
United Airlines
Deal found 5/23![United Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 9/243:12 pm
ONT
- MSO
1 stop6h 44m
Alaska Airlines
Mon 9/287:00 am
MSO
- ONT
2 stops11h 18m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 8/65:06 pm
ONT
- FCA
1 stop4h 47m
Delta
Sun 8/95:10 am
FCA
- ONT
1 stop4h 38m
Delta
Deal found 5/23![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:00 am
ONT
- FCA
1 stop7h 30m
United Airlines
Thu 8/134:17 pm
FCA
- ONT
1 stop7h 42m
United Airlines
Deal found 5/19![United Airlines logo]()
$486
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 11/74:09 pm
ONT
- FCA
1 stop6h 50m
Alaska Airlines
Wed 11/116:34 pm
FCA
- ONT
2 stops24h 17m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$405
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/109:40 am
ONT
- FCA
1 stop6h 49m
Delta
Mon 7/205:25 am
FCA
- ONT
1 stop4h 22m
Delta
Deal found 5/18![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 5/295:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Mon 6/12:19 pm
WYS
- ONT
1 stop7h 27m
United Airlines
Deal found 5/23![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 6/166:00 am
ONT
- WYS
1 stop5h 28m
Delta
Tue 6/231:10 pm
WYS
- ONT
2 stops10h 31m
Delta
Deal found 5/22![Delta logo]()
$304
This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 6/195:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Tue 6/232:19 pm
WYS
- ONT
1 stop23h 28m
United Airlines
Deal found 5/22![United Airlines logo]()
$499
This Alaska Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 7/96:02 am
ONT
- BIL
1 stop6h 03m
Alaska Airlines
Tue 7/146:00 am
BIL
- ONT
1 stop8h 09m
Alaska Airlines
Deal found 5/19![Alaska Airlines logo]()
$455
This KAYAK deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:21 pm
ONT
- BZN
1 stop6h 02m
Delta
Wed 6/175:15 am
BZN
- ONT
1 stop4h 35m
Delta
Deal found 5/21![Delta logo]()
$315
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/249:20 pm
ONT
- HLN
1 stop18h 12m
Alaska Airlines
Tue 8/45:09 pm
HLN
- ONT
1 stop7h 02m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 6/115:00 am
ONT
- FCA
1 stop7h 30m
United Airlines
Sun 6/146:20 am
FCA
- ONT
1 stop7h 27m
United Airlines
Deal found 5/23![United Airlines logo]()
$519
This Alaska Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 8/1312:04 pm
ONT
- HLN
1 stop27h 28m
Alaska Airlines
Mon 8/175:09 pm
HLN
- ONT
1 stop7h 02m
Alaska Airlines
Deal found 5/19![Alaska Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 8/155:00 am
ONT
- FCA
1 stop15h 21m
United Airlines
Wed 8/194:17 pm
FCA
- ONT
1 stop4h 44m
United Airlines
Deal found 5/21![United Airlines logo]()
$522
This Alaska Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 7/86:02 am
ONT
- HLN
1 stop9h 30m
Alaska Airlines
Tue 7/145:09 pm
HLN
- ONT
1 stop7h 02m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$471
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated May 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated May 23, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:04 pm
ONT
- BZN
1 stop6h 01m
Alaska Airlines
Thu 6/48:00 am
BZN
- ONT
1 stop8h 09m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/44:57 pm
ONT
- BZN
1 stop6h 02m
Delta
Wed 6/105:15 am
BZN
- ONT
1 stop4h 35m
Delta
Deal found 5/20![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/65:55 pm
ONT
- FCA
1 stop4h 19m
Delta
Tue 6/95:19 am
FCA
- ONT
1 stop4h 31m
Delta
Deal found 5/21![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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.
Sat 6/611:59 pm
ONT
- FCA
1 stop10h 35m
American Airlines
Mon 6/83:51 pm
FCA
- ONT
1 stop7h 48m
American Airlines
Deal found 5/20![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/66:00 am
ONT
- WYS
1 stop3h 38m
Delta
Wed 6/101:10 pm
WYS
- ONT
1 stop4h 31m
Delta
Deal found 5/19![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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.
Mon 6/84:00 pm
ONT
- BZN
2 stops8h 10m
Southwest
Mon 6/152:50 pm
BZN
- ONT
1 stop6h 15m
Southwest
Deal found 5/20![Southwest logo]()
$330
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/135:21 pm
ONT
- FCA
1 stop4h 34m
Delta
Tue 6/165:19 am
FCA
- ONT
1 stop4h 31m
Delta
Deal found 5/20![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 6/166:00 am
ONT
- WYS
1 stop5h 28m
Delta
Tue 6/231:10 pm
WYS
- ONT
2 stops10h 31m
Delta
Deal found 5/22![Delta logo]()
$304
This KAYAK deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:21 pm
ONT
- BZN
1 stop6h 02m
Delta
Wed 6/1712:13 pm
BZN
- ONT
1 stop5h 28m
Delta
Deal found 5/20![Delta logo]()
$315
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/206:00 am
ONT
- BZN
1 stop5h 05m
Delta
Mon 6/225:15 am
BZN
- ONT
1 stop4h 35m
Delta
Deal found 5/19![Delta logo]()
$316
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/219:40 am
ONT
- BZN
1 stop3h 55m
Delta
Sat 7/116:00 pm
BZN
- ONT
1 stop5h 23m
Delta
Deal found 5/21![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/275:21 pm
ONT
- FCA
1 stop4h 34m
Delta
Sat 7/46:10 pm
FCA
- ONT
1 stop5h 13m
Delta
Deal found 5/19![Delta logo]()
$308
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 May 23, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated May 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 8/42:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Deal found 5/19![Alaska Airlines logo]()
$136
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 7/269:40 am
ONT
- FCA
1 stop6h 49m
Delta
Deal found 5/20![Delta logo]()
$139
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/34:57 pm
ONT
- FCA
1 stop5h 17m
Delta
Deal found 5/20![Delta logo]()
$150
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:06 pm
ONT
- MSO
1 stop5h 41m
Delta
Deal found 5/21![Delta logo]()
$156
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 8/269:01 am
ONT
- FCA
1 stop5h 20m
United Airlines
Deal found 5/20![United Airlines logo]()
$158
This Alaska Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 7/82:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Deal found 5/19![Alaska Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/145:21 pm
ONT
- BZN
1 stop6h 02m
Delta
Deal found 5/18![Delta logo]()
$160
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 9/193:12 pm
ONT
- FCA
1 stop6h 44m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$165
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/24:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$170
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:13 pm
ONT
- FCA
2 stops15h 21m
American Airlines
Deal found 5/19![American Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/253:40 pm
ONT
- MSO
1 stop16h 54m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$174
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 5/297:12 pm
ONT
- BZN
2 stops14h 46m
American Airlines
Deal found 5/19![American Airlines logo]()
$175
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 May 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $240 (Kiwi.com) |
One-way from | $136 (Alaska Airlines) |
Popular in | May |
Cheapest in | January |
Average price | $419 |
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 May 23, 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
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Fri 8/7
5:06 pm-12:04 am
1 stop5h 58m
Bozeman Gallatin Field
Mon 8/10
6:00 am-8:48 am
1 stop3h 48m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Thu 6/4
4:57 pm-11:59 pm
1 stop6h 02m
Bozeman Gallatin Field
Sun 6/7
5:15 am-8:50 am
1 stop4h 35m
$271
Quickest round-trip
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sun 8/16
9:43 am-2:26 pm
1 stop3h 43m
Bozeman Gallatin Field
Sun 8/16
7:39 pm-11:34 pm
1 stop4h 55m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Fri 8/21
5:06 pm-12:04 am
1 stop5h 58m
Bozeman Gallatin Field
Mon 8/24
6:00 am-8:48 am
1 stop3h 48m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sun 8/16
5:06 pm-12:04 am
1 stop5h 58m
Bozeman Gallatin Field
Mon 8/17
6:00 am-8:48 am
1 stop3h 48m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sun 8/16
5:06 pm-12:04 am
1 stop5h 58m
Bozeman Gallatin Field
Tue 8/18
6:00 am-8:48 am
1 stop3h 48m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Fri 8/14
5:06 pm-12:04 am
1 stop5h 58m
Bozeman Gallatin Field
Tue 8/18
6:00 am-8:48 am
1 stop3h 48m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Fri 8/14
9:43 am-3:09 pm
1 stop4h 26m
Bozeman Gallatin Field
Sun 8/16
7:39 pm-11:34 pm
1 stop4h 55m
$271
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Thu 8/6
5:06 pm-10:53 pm
1 stop4h 47m
Kalispell Glacier Park
Sun 8/9
5:10 am-8:48 am
1 stop4h 38m
$277
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Fri 7/10
9:40 am-5:29 pm
1 stop6h 49m
Kalispell Glacier Park
Mon 7/20
5:25 am-8:47 am
1 stop4h 22m
$277
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-FCA
ONT-MSO
ONT-BIL
ONT-HLN
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-FCA
ONT-MSO
ONT-BIL
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 May 23, 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.
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
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 May 23, 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 May 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$422 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$189 | Average$394 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$230 | Average$404 | FlexibilityNo cancel fee | On-time63% |