$76+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jun 9 — Jun 161
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 May 10, 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 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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
- BZN
1 stop23h 18m
Multiple Airlines
Sun 7/124:48 pm
BZN
- ONT
1 stop28h 05m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$226
This SmartFares deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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.
Thu 8/62:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Sat 8/156:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$249
This Trip.com deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Thu 6/116:03 am
BZN
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$256
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/12:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Sat 8/86:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:43 am
ONT
- BZN
1 stop4h 26m
Delta
Thu 8/137:39 pm
BZN
- ONT
1 stop4h 55m
Delta
Deal found 5/7![Delta logo]()
$272
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:45 am
ONT
- BZN
1 stop7h 32m
Delta
Mon 6/18:00 am
BZN
- ONT
1 stop5h 33m
Delta
Deal found 5/10![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:40 pm
ONT
- BZN
1 stop7h 30m
Southwest
Mon 7/137:15 pm
BZN
- ONT
1 stop5h 15m
Southwest
Deal found 5/7![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/296:00 am
ONT
- FCA
1 stop4h 25m
Delta
Tue 6/25:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 5/6![Delta logo]()
$277
This Trip.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 8/247:10 am
ONT
- BZN
1 stop5h 14m
Alaska Airlines
Sat 8/293:32 pm
BZN
- ONT
1 stop5h 52m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$282
This American Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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
- FCA
2 stops15h 23m
American Airlines
Tue 6/23:50 pm
FCA
- ONT
1 stop7h 48m
American Airlines
Deal found 5/6![American Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:18 pm
ONT
- BZN
1 stop7h 01m
United Airlines
Mon 8/314:32 pm
BZN
- ONT
1 stop5h 21m
United Airlines
Deal found 5/8![United Airlines logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:10 am
ONT
- BZN
1 stop5h 14m
Alaska Airlines
Wed 9/303:40 pm
BZN
- ONT
1 stop5h 44m
Alaska Airlines
Deal found 5/7![Alaska Airlines logo]()
$294
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 10, 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 10, 2026.
This Southwest deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:35 pm
ONT
- BZN
1 stop5h 10m
Southwest
Mon 8/37:15 pm
BZN
- ONT
1 stop5h 15m
Southwest
Deal found 5/8![Southwest logo]()
$271
This Delta deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:55 pm
ONT
- BZN
1 stop4h 44m
Delta
Mon 8/106:00 am
BZN
- ONT
1 stop3h 48m
Delta
Deal found 5/8![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/42:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Tue 8/116:03 am
BZN
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Sat 10/102:02 pm
WYS
- ONT
1 stop7h 50m
United Airlines
Deal found 5/7![United Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/6![Delta logo]()
$271
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/32:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Sat 8/86:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:57 pm
ONT
- BZN
1 stop6h 02m
Delta
Sat 6/68:00 am
BZN
- ONT
1 stop5h 33m
Delta
Deal found 5/8![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:40 pm
ONT
- BZN
1 stop7h 30m
Southwest
Sun 7/126:00 am
BZN
- ONT
1 stop4h 10m
Southwest
Deal found 5/9![Southwest logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:02 am
ONT
- BZN
1 stop7h 07m
Alaska Airlines
Mon 8/176:03 am
BZN
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 5/7![Alaska Airlines logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 47m
Alaska Airlines
Tue 9/297:00 am
MSO
- ONT
1 stop8h 18m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 9/246:00 am
ONT
- MSO
1 stop5h 33m
Delta
Mon 9/286:10 pm
MSO
- ONT
1 stop6h 34m
Delta
Deal found 5/6![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 9/223:12 pm
ONT
- MSO
1 stop6h 47m
Alaska Airlines
Tue 9/294:13 pm
MSO
- ONT
1 stop8h 11m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/14:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Mon 6/85:20 am
BIL
- ONT
1 stop4h 30m
Delta
Deal found 5/5![Delta logo]()
$301
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/215:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Sun 8/232:02 pm
WYS
- ONT
1 stop7h 50m
United Airlines
Deal found 5/5![United Airlines logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/204:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Thu 5/288:00 am
BZN
- ONT
1 stop8h 09m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:10 pm
ONT
- BZN
1 stop6h 13m
Delta
Sat 7/186:00 pm
BZN
- ONT
1 stop5h 23m
Delta
Deal found 5/8![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:57 pm
ONT
- FCA
1 stop5h 17m
Delta
Sat 6/612:20 pm
FCA
- ONT
1 stop4h 57m
Delta
Deal found 5/10![Delta logo]()
$323
This Alaska Airlines deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
ONT
- MSO
1 stop5h 16m
Alaska Airlines
Thu 6/48:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:00 am
ONT
- WYS
1 stop7h 20m
United Airlines
Mon 9/72:02 pm
WYS
- ONT
1 stop7h 50m
United Airlines
Deal found 5/5![United Airlines logo]()
$507
This Expedia deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:00 am
ONT
- SDY
2 stops9h 36m
Multiple Airlines
Mon 5/257:35 am
SDY
- ONT
2 stops17h 21m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,154
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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
- BIL
1 stop3h 54m
Delta
Sun 5/315:30 am
BIL
- ONT
1 stop4h 23m
Delta
Deal found 5/5![Delta logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/276:00 am
ONT
- BIL
1 stop11h 41m
Alaska Airlines
Sun 5/316:00 am
BIL
- ONT
1 stop6h 10m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Mon 6/152:19 pm
WYS
- ONT
2 stops22h 53m
United Airlines
Deal found 5/6![United Airlines logo]()
$560
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/612:55 pm
ONT
- BIL
1 stop3h 58m
Delta
Sun 8/96:34 pm
BIL
- ONT
1 stop6h 00m
Delta
Deal found 5/5![Delta logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:10 am
ONT
- FCA
1 stop5h 18m
Alaska Airlines
Fri 8/286:15 am
FCA
- ONT
1 stop5h 49m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/241:35 pm
ONT
- BIL
2 stops8h 17m
Delta
Thu 5/285:30 am
BIL
- ONT
1 stop4h 23m
Delta
Deal found 5/9![Delta logo]()
$366
This United Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:00 am
ONT
- WYS
1 stop10h 37m
United Airlines
Mon 6/82:19 pm
WYS
- ONT
1 stop7h 27m
United Airlines
Deal found 5/10![United Airlines logo]()
$590
This Alaska Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Sat 5/3012:56 pm
MSO
- ONT
2 stops23h 14m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
Thu 6/112:19 pm
WYS
- ONT
2 stops22h 53m
United Airlines
Deal found 5/5![United Airlines logo]()
$608
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 6/115:21 pm
ONT
- MSO
1 stop6h 07m
Delta
Thu 6/185:31 am
MSO
- ONT
1 stop4h 19m
Delta
Deal found 5/6![Delta logo]()
$380
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated May 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/235:55 pm
ONT
- FCA
1 stop4h 19m
Delta
Mon 5/255:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 5/6![Delta logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/264:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Wed 6/31:57 pm
BZN
- ONT
1 stop5h 50m
Alaska Airlines
Deal found 5/7![Alaska Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:50 am
ONT
- BZN
1 stop7h 05m
Delta
Wed 6/34:04 pm
BZN
- ONT
1 stop7h 28m
Delta
Deal found 5/7![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:45 am
ONT
- BZN
1 stop7h 32m
Delta
Mon 6/18:00 am
BZN
- ONT
1 stop5h 33m
Delta
Deal found 5/10![Delta logo]()
$273
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/296:00 am
ONT
- FCA
1 stop4h 25m
Delta
Tue 6/25:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 5/6![Delta logo]()
$277
This American Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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
- FCA
2 stops15h 23m
American Airlines
Tue 6/23:50 pm
FCA
- ONT
1 stop7h 48m
American Airlines
Deal found 5/6![American Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/14:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Mon 6/85:20 am
BIL
- ONT
1 stop4h 30m
Delta
Deal found 5/5![Delta logo]()
$301
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/24:30 pm
ONT
- BZN
1 stop6h 45m
Southwest
Sat 6/65:15 am
BZN
- ONT
2 stops8h 30m
Southwest
Deal found 5/5![Southwest logo]()
$299
This Trip.com deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Thu 6/116:03 am
BZN
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$256
This Southwest deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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.
Fri 6/54:40 pm
ONT
- BZN
1 stop7h 30m
Southwest
Fri 6/127:15 pm
BZN
- ONT
1 stop5h 15m
Southwest
Deal found 5/6![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:00 am
ONT
- WYS
1 stop5h 28m
Delta
Sat 6/131:10 pm
WYS
- ONT
1 stop4h 31m
Delta
Deal found 5/9![Delta logo]()
$304
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 6/101:00 pm
ONT
- BZN
1 stop4h 46m
Delta
Wed 6/175:15 am
BZN
- ONT
1 stop4h 35m
Delta
Deal found 5/6![Delta logo]()
$295
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 10, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This Trip.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/274:39 pm
ONT
- MSO
1 stop15h 44m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$76
This Trip.com deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/63:30 pm
ONT
- MSO
1 stop17h 05m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/271:39 pm
ONT
- BZN
1 stop25h 06m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$85
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/62:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$136
This Southwest deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:40 pm
ONT
- BZN
1 stop7h 30m
Southwest
Deal found 5/7![Southwest logo]()
$141
This Alaska Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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
Deal found 5/5![Alaska Airlines logo]()
$151
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/10![Delta logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:10 am
ONT
- BZN
1 stop5h 14m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 6/226:00 am
ONT
- BZN
1 stop4h 18m
Delta
Deal found 5/6![Delta logo]()
$160
This Expedia deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/139:20 pm
ONT
- BZN
1 stop11h 26m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/226:00 am
ONT
- HLN
1 stop5h 20m
Delta
Deal found 5/5![Delta logo]()
$166
This Delta deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:45 am
ONT
- BZN
1 stop7h 32m
Delta
Deal found 5/8![Delta logo]()
$170
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $226 (Kiwi.com) |
One-way from | $76 (Trip.com) |
Popular in | May |
Cheapest in | January |
Average price | $409 |
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 10, 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
Wed 7/29
6:35 pm-12:45 am
1 stop5h 10m
Bozeman Gallatin Field
Mon 8/3
7:15 pm-11:30 pm
1 stop5h 15m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 8/3
12:55 pm-6:39 pm
1 stop4h 44m
Bozeman Gallatin Field
Mon 8/10
6:00 am-8:48 am
1 stop3h 48m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Tue 8/4
2:05 pm-11:19 pm
1 stop8h 14m
Bozeman Gallatin Field
Tue 8/11
6:03 am-1:09 pm
1 stop8h 06m
$271
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
Tue 6/2
4:57 pm-11:59 pm
1 stop6h 02m
Bozeman Gallatin Field
Sat 6/6
8:00 am-12:33 pm
1 stop5h 33m
$271
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 8/3
2:05 pm-11:19 pm
1 stop8h 14m
Bozeman Gallatin Field
Sat 8/8
6:03 am-11:14 am
1 stop6h 11m
$294
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Tue 8/11
6:02 am-2:09 pm
1 stop7h 07m
Bozeman Gallatin Field
Mon 8/17
6:03 am-1:09 pm
1 stop8h 06m
$294
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Thu 9/24
3:12 pm-10:59 pm
1 stop6h 47m
Missoula Johnson-Bell Field
Tue 9/29
7:00 am-2:18 pm
1 stop8h 18m
$301
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Thu 9/24
6:00 am-12:33 pm
1 stop5h 33m
Missoula Johnson-Bell Field
Mon 9/28
6:10 pm-11:44 pm
1 stop6h 34m
$301
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Tue 9/22
3:12 pm-10:59 pm
1 stop6h 47m
Missoula Johnson-Bell Field
Tue 9/29
4:13 pm-11:24 pm
1 stop8h 11m
$301
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-FCA
ONT-HLN
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-BZN
ONT-MSO
ONT-FCA
ONT-HLN
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 10, 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
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
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 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$399 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$184 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$415 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$211 | Average$398 | FlexibilityNo cancel fee | On-time63% |