$91+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
May 17 — May 241
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 April 17, 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 April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 8/123:34 pm
ONT
- MSO
1 stop17h 00m
Multiple Airlines
Thu 8/209:52 pm
MSO
- ONT
1 stop18h 17m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 7/83:34 pm
ONT
- MSO
1 stop17h 00m
Multiple Airlines
Thu 7/2310:24 am
MSO
- ONT
1 stop5h 45m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Wed 5/274:39 pm
ONT
- MSO
1 stop15h 44m
Multiple Airlines
Sun 5/3110:13 am
MSO
- ONT
1 stop5h 56m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 8/123:34 pm
ONT
- MSO
1 stop17h 00m
Multiple Airlines
Sun 8/239:52 pm
MSO
- ONT
1 stop18h 17m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$243
This Delta deal was found by Cheapflights users on 4/13. 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 7/195:16 pm
ONT
- BZN
1 stop6h 07m
Delta
Tue 7/2112:13 pm
BZN
- ONT
1 stop5h 22m
Delta
Deal found 4/13![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 4/16. 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 6/275:24 pm
ONT
- BZN
1 stop3h 44m
Delta
Wed 7/112:13 pm
BZN
- ONT
1 stop5h 29m
Delta
Deal found 4/16![Delta logo]()
$272
This Delta deal was found by Cheapflights users on 4/13. 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.
Mon 5/45:05 pm
ONT
- FCA
1 stop5h 22m
Delta
Sun 5/105:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 4/13![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:51 am
ONT
- BIL
1 stop20h 19m
Multiple Airlines
Tue 5/262:41 pm
BIL
- ONT
2 stops18h 23m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 4/16. 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 5/286:00 am
ONT
- FCA
1 stop4h 25m
Delta
Tue 6/21:20 pm
FCA
- ONT
2 stops10h 12m
Delta
Deal found 4/16![Delta logo]()
$282
This Jettzy deal was found by Cheapflights users on 4/17. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 am
ONT
- FCA
1 stop5h 14m
Alaska Airlines
Tue 11/312:51 pm
FCA
- ONT
1 stop6h 22m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 4/13. 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 5/26:00 am
ONT
- FCA
1 stop4h 23m
Delta
Fri 5/155:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 4/13![Delta logo]()
$288
This Delta deal was found by Cheapflights users on 4/13. 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 5/86:45 am
ONT
- BZN
1 stop7h 32m
Delta
Mon 5/115:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/13![Delta logo]()
$295
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 April 17, 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 April 17, 2026.
This Delta deal was found by Cheapflights users on 4/16. 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 7/161:42 pm
ONT
- BZN
1 stop8h 09m
Delta
Sat 7/256:00 pm
BZN
- ONT
1 stop5h 23m
Delta
Deal found 4/16![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Sat 7/42:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Wed 7/86:03 am
BZN
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:10 am
ONT
- BZN
1 stop7h 24m
United Airlines
Sat 5/26:30 am
BZN
- ONT
2 stops12h 22m
United Airlines
Deal found 4/12![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 4/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:50 am
ONT
- BZN
2 stops6h 50m
Southwest
Mon 9/218:35 am
BZN
- ONT
1 stop6h 25m
Southwest
Deal found 4/17![Southwest logo]()
$404
This Delta deal was found by Cheapflights users on 4/15. 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.
Mon 8/245:05 pm
ONT
- BZN
1 stop5h 54m
Delta
Mon 8/318:30 am
BZN
- ONT
1 stop5h 19m
Delta
Deal found 4/15![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 4/16. 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 7/165:16 pm
ONT
- BZN
1 stop6h 07m
Delta
Fri 7/245:15 am
BZN
- ONT
1 stop4h 30m
Delta
Deal found 4/16![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 am
ONT
- FCA
1 stop5h 14m
Alaska Airlines
Wed 10/72:10 pm
FCA
- ONT
1 stop5h 03m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 4/16. 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.
Mon 6/81:48 pm
ONT
- BZN
1 stop8h 00m
Delta
Mon 6/158:25 am
BZN
- ONT
1 stop5h 43m
Delta
Deal found 4/16![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 6/611:15 am
ONT
- FCA
1 stop4h 45m
Alaska Airlines
Sat 6/136:33 am
FCA
- ONT
1 stop5h 41m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 4/16. 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.
Tue 5/124:57 pm
ONT
- FCA
1 stop5h 17m
Delta
Sat 5/166:07 pm
FCA
- ONT
1 stop5h 38m
Delta
Deal found 4/16![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 4/15. 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 5/134:57 pm
ONT
- FCA
1 stop5h 17m
Delta
Sat 5/166:07 pm
FCA
- ONT
1 stop5h 38m
Delta
Deal found 4/15![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 4/13. 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.
Wed 4/291:38 pm
ONT
- BIL
1 stop7h 27m
United Airlines
Sun 5/36:35 am
BIL
- ONT
1 stop7h 03m
United Airlines
Deal found 4/13![United Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Sat 8/152:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Mon 8/247:00 am
BZN
- ONT
1 stop8h 08m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:24 pm
ONT
- BIL
1 stop4h 22m
Delta
Mon 6/156:43 pm
BIL
- ONT
1 stop6h 02m
Delta
Deal found 4/13![Delta logo]()
$301
This United Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:00 am
ONT
- WYS
1 stop7h 28m
United Airlines
Tue 5/192:03 pm
WYS
- ONT
1 stop23h 35m
United Airlines
Deal found 4/12![United Airlines logo]()
$447
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 6/64:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Tue 6/167:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:40 pm
ONT
- BIL
1 stop6h 17m
United Airlines
Tue 5/56:35 am
BIL
- ONT
1 stop7h 03m
United Airlines
Deal found 4/12![United Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 4/13. 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 6/34:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Sat 6/66:05 pm
MSO
- ONT
1 stop5h 40m
Delta
Deal found 4/13![Delta logo]()
$315
This Alaska Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Sat 6/67:45 am
MSO
- ONT
2 stops10h 32m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 6/115:24 pm
ONT
- BZN
1 stop5h 59m
Delta
Sun 6/147:30 pm
BZN
- ONT
1 stop5h 15m
Delta
Deal found 4/13![Delta logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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 6/175:54 pm
ONT
- MSO
1 stop5h 02m
Alaska Airlines
Mon 6/227:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$415
This United Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/271:18 pm
ONT
- WYS
1 stop23h 14m
United Airlines
Sun 5/315:45 pm
WYS
- ONT
2 stops19h 27m
United Airlines
Deal found 4/12![United Airlines logo]()
$526
This Delta deal was found by Cheapflights users on 4/15. 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.
Fri 5/86:45 am
ONT
- BZN
1 stop7h 32m
Delta
Mon 5/115:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/15![Delta logo]()
$328
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Tue 5/53:26 pm
ONT
- BIL
2 stops21h 00m
Alaska Airlines
Thu 5/147:21 pm
BIL
- ONT
1 stop5h 37m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$431
This Delta deal was found by Cheapflights users on 4/13. 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 5/134:57 pm
ONT
- HLN
1 stop4h 36m
Delta
Wed 5/201:03 pm
HLN
- ONT
1 stop4h 14m
Delta
Deal found 4/13![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 4/16. 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.
Tue 7/71:18 pm
ONT
- HLN
1 stop7h 02m
United Airlines
Wed 7/152:20 pm
HLN
- ONT
1 stop7h 22m
United Airlines
Deal found 4/16![United Airlines logo]()
$531
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Fri 5/154:03 pm
ONT
- HLN
1 stop23h 03m
Alaska Airlines
Fri 5/224:43 pm
HLN
- ONT
1 stop27h 19m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 4/301:40 pm
ONT
- COD
1 stop8h 05m
United Airlines
Mon 5/41:40 pm
COD
- ONT
1 stop7h 56m
United Airlines
Deal found 4/15![United Airlines logo]()
$534
This Delta deal was found by Cheapflights users on 4/13. 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 5/86:00 am
ONT
- FCA
1 stop4h 28m
Delta
Thu 5/145:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 4/13![Delta logo]()
$338
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Fri 5/17:00 am
ONT
- BIL
1 stop5h 26m
Alaska Airlines
Mon 5/47:00 am
BIL
- ONT
1 stop8h 32m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$436
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated April 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/14. 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 4/286:00 am
ONT
- FCA
1 stop4h 23m
Delta
Fri 5/16:10 pm
FCA
- ONT
1 stop6h 34m
Delta
Deal found 4/14![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 4/14. 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 4/285:10 am
ONT
- BZN
1 stop7h 24m
United Airlines
Sat 5/26:30 am
BZN
- ONT
2 stops12h 22m
United Airlines
Deal found 4/14![United Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 am
ONT
- BZN
1 stop4h 04m
Delta
Wed 5/63:15 pm
BZN
- ONT
1 stop8h 22m
Delta
Deal found 4/12![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 4/13. 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 5/26:00 am
ONT
- FCA
1 stop4h 23m
Delta
Wed 5/135:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 4/13![Delta logo]()
$288
This Delta deal was found by Cheapflights users on 4/13. 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.
Mon 5/45:05 pm
ONT
- FCA
1 stop5h 22m
Delta
Tue 5/56:10 pm
FCA
- ONT
1 stop6h 34m
Delta
Deal found 4/13![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 4/13. 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 5/86:45 am
ONT
- BZN
1 stop7h 32m
Delta
Mon 5/115:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/13![Delta logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 5/134:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Wed 5/208:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 4/15. 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 5/134:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Wed 5/206:19 pm
BIL
- ONT
1 stop6h 15m
Delta
Deal found 4/15![Delta logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:51 am
ONT
- BIL
1 stop20h 19m
Multiple Airlines
Tue 5/262:41 pm
BIL
- ONT
2 stops18h 23m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$278
This CheapOair deal was found by Cheapflights users on 4/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:41 pm
ONT
- FCA
1 stop14h 10m
Alaska Airlines
Sat 5/306:15 am
FCA
- ONT
1 stop5h 55m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Wed 5/274:39 pm
ONT
- MSO
1 stop15h 44m
Multiple Airlines
Sun 5/3110:13 am
MSO
- ONT
1 stop5h 56m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 4/16. 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 5/286:00 am
ONT
- FCA
1 stop4h 25m
Delta
Tue 6/21:20 pm
FCA
- ONT
2 stops10h 12m
Delta
Deal found 4/16![Delta logo]()
$282
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 April 17, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Trip.com deal was found by Cheapflights users on 4/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:39 pm
ONT
- BZN
1 stop15h 56m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$91
This Trip.com deal was found by Cheapflights users on 4/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:27 pm
ONT
- BZN
1 stop12h 08m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/2811:51 am
ONT
- FCA
1 stop20h 55m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$111
This Trip.com deal was found by Cheapflights users on 4/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:05 pm
ONT
- BZN
1 stop5h 54m
Delta
Deal found 4/16![Delta logo]()
$130
This SmartFares deal was found by Cheapflights users on 4/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$132
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 6/115:24 pm
ONT
- BZN
1 stop5h 59m
Delta
Deal found 4/13![Delta logo]()
$136
This Delta deal was found by Cheapflights users on 4/13. 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.
Mon 5/116:00 am
ONT
- FCA
1 stop4h 28m
Delta
Deal found 4/13![Delta logo]()
$139
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:12 pm
ONT
- FCA
2 stops15h 23m
American Airlines
Deal found 4/14![American Airlines logo]()
$144
This Delta deal was found by Cheapflights users on 4/13. 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 8/25:16 pm
ONT
- FCA
1 stop4h 37m
Delta
Deal found 4/13![Delta logo]()
$150
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- MSO
1 stop7h 59m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$151
This Southwest deal was found by Cheapflights users on 4/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/64:40 pm
ONT
- BZN
1 stop7h 30m
Southwest
Deal found 4/12![Southwest logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/68:06 pm
ONT
- MSO
3 stops46h 58m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$155
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 April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $222 (Kiwi.com) |
One-way from | $91 (Trip.com) |
Popular in | May |
Cheapest in | January |
Average price | $326 |
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 April 17, 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
Thu 7/16
1:42 pm-10:51 pm
1 stop8h 09m
Bozeman Gallatin Field
Sat 7/25
6:00 pm-10:23 pm
1 stop5h 23m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 8/24
5:05 pm-11:59 pm
1 stop5h 54m
Bozeman Gallatin Field
Mon 8/31
8:30 am-12:49 pm
1 stop5h 19m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Thu 7/16
5:16 pm-12:23 am
1 stop6h 07m
Bozeman Gallatin Field
Fri 7/24
5:15 am-8:45 am
1 stop4h 30m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 6/8
1:48 pm-10:48 pm
1 stop8h 00m
Bozeman Gallatin Field
Mon 6/15
8:25 am-1:08 pm
1 stop5h 43m
$271
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Tue 5/12
4:57 pm-11:14 pm
1 stop5h 17m
Kalispell Glacier Park
Sat 5/16
6:07 pm-10:45 pm
1 stop5h 38m
$277
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Wed 5/13
4:57 pm-11:14 pm
1 stop5h 17m
Kalispell Glacier Park
Sat 5/16
6:07 pm-10:45 pm
1 stop5h 38m
$277
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sat 7/4
2:05 pm-11:19 pm
1 stop8h 14m
Bozeman Gallatin Field
Wed 7/8
6:03 am-1:09 pm
1 stop8h 06m
$295
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Tue 4/28
5:10 am-1:34 pm
1 stop7h 24m
Bozeman Gallatin Field
Sat 5/2
6:30 am-5:52 pm
2 stops12h 22m
$301
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 6/9
5:24 pm-10:46 pm
1 stop4h 22m
Billings Logan Intl
Mon 6/15
6:43 pm-11:45 pm
1 stop6h 02m
$301
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Wed 6/3
4:57 pm-12:22 am
1 stop6h 25m
Missoula Johnson-Bell Field
Sat 6/6
6:05 pm-10:45 pm
1 stop5h 40m
$315
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-MSO
ONT-BZN
ONT-FCA
ONT-BIL
ONT-WYS
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-MSO
ONT-BZN
ONT-FCA
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 April 17, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, 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
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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 April 17, 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$402 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$178 | Average$385 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$189 | Average$364 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$211 | Average$402 | FlexibilityNo cancel fee | On-time63% |