$98+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Apr 10 — Apr 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Montana with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Montana
Cheapest
Best
Last-minute
One-way
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 March 11, 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 March 11, 2026.
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/2111:53 am
ONT
- BZN
1 stop9h 47m
Delta
Thu 4/307:18 am
BZN
- ONT
1 stop7h 21m
Delta
Deal found 3/6![Delta logo]()
$185
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/2111:53 am
ONT
- BZN
2 stops11h 16m
Delta
Sat 4/257:18 am
BZN
- ONT
1 stop7h 21m
Delta
Deal found 3/6![Delta logo]()
$190
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/2111:53 am
ONT
- BZN
2 stops11h 16m
Delta
Tue 4/2811:59 am
BZN
- ONT
2 stops11h 38m
Delta
Deal found 3/6![Delta logo]()
$196
This Delta deal was found by Cheapflights users on 3/6. 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 4/235:05 pm
ONT
- BZN
1 stop6h 04m
Delta
Thu 4/307:18 am
BZN
- ONT
1 stop7h 21m
Delta
Deal found 3/6![Delta logo]()
$208
This Delta deal was found by Cheapflights users on 3/6. 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 4/236:00 am
ONT
- BZN
1 stop4h 04m
Delta
Tue 4/2811:59 am
BZN
- ONT
2 stops11h 38m
Delta
Deal found 3/6![Delta logo]()
$213
This Delta deal was found by Cheapflights users on 3/6. 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.
Sun 4/266:00 am
ONT
- BZN
1 stop4h 04m
Delta
Thu 4/307:18 am
BZN
- ONT
1 stop7h 21m
Delta
Deal found 3/6![Delta logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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.
Sat 7/252:09 pm
ONT
- BZN
1 stop8h 13m
Alaska Airlines
Sat 8/16:00 am
BZN
- ONT
1 stop6h 14m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:09 pm
ONT
- BZN
1 stop5h 01m
Delta
Mon 4/136:34 pm
BZN
- ONT
1 stop6h 10m
Delta
Deal found 3/8![Delta logo]()
$232
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/2111:53 am
ONT
- BZN
2 stops11h 16m
Delta
Fri 4/2411:59 am
BZN
- ONT
1 stop5h 26m
Delta
Deal found 3/6![Delta logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sat 3/147:31 pm
ONT
- BZN
1 stop13h 07m
Multiple Airlines
Sun 3/2210:28 am
BZN
- ONT
1 stop22h 38m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$234
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/33:45 pm
ONT
- BZN
2 stops7h 30m
Southwest
Mon 6/87:15 pm
BZN
- ONT
1 stop5h 15m
Southwest
Deal found 3/7![Southwest logo]()
$236
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:55 pm
ONT
- FCA
1 stop4h 19m
Delta
Wed 5/136:07 pm
FCA
- ONT
1 stop6h 27m
Delta
Deal found 3/9![Delta logo]()
$237
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 March 11, 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 March 11, 2026.
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/217:00 am
ONT
- BZN
1 stop14h 40m
Delta
Wed 4/297:18 am
BZN
- ONT
1 stop10h 57m
Delta
Deal found 3/6![Delta logo]()
$185
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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.
Sat 7/252:09 pm
ONT
- BZN
1 stop8h 13m
Alaska Airlines
Mon 7/276:00 am
BZN
- ONT
1 stop6h 14m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$231
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/12:35 pm
ONT
- BZN
2 stops8h 35m
Southwest
Tue 4/73:20 pm
BZN
- ONT
1 stop7h 30m
Southwest
Deal found 3/10![Southwest logo]()
$256
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/155:10 am
ONT
- BIL
1 stop7h 13m
United Airlines
Fri 4/172:35 pm
BIL
- ONT
1 stop7h 01m
United Airlines
Deal found 3/6![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:55 am
ONT
- BZN
1 stop3h 51m
Delta
Sun 9/611:30 am
BZN
- ONT
1 stop5h 44m
Delta
Deal found 3/8![Delta logo]()
$231
This Delta deal was found by Cheapflights users on 3/6. 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 4/116:00 am
ONT
- BZN
1 stop3h 48m
Delta
Mon 4/136:34 pm
BZN
- ONT
1 stop6h 10m
Delta
Deal found 3/6![Delta logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
ONT
- BZN
1 stop27h 40m
Alaska Airlines
Wed 4/157:26 pm
BZN
- ONT
1 stop5h 33m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:05 pm
ONT
- BZN
1 stop5h 54m
Delta
Mon 9/75:45 am
BZN
- ONT
1 stop4h 16m
Delta
Deal found 3/8![Delta logo]()
$255
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 7/215:38 pm
ONT
- MSO
1 stop16h 04m
Alaska Airlines
Wed 7/297:00 am
MSO
- ONT
1 stop7h 13m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:00 am
ONT
- BZN
1 stop6h 36m
Delta
Mon 8/35:45 am
BZN
- ONT
1 stop4h 16m
Delta
Deal found 3/8![Delta logo]()
$255
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:10 am
ONT
- BIL
1 stop7h 13m
United Airlines
Sat 5/25:05 am
BIL
- ONT
2 stops8h 17m
United Airlines
Deal found 3/10![United Airlines logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- MSO
1 stop5h 19m
Alaska Airlines
Sat 5/93:55 pm
MSO
- ONT
1 stop18h 50m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$293
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:00 am
ONT
- FCA
1 stop7h 31m
United Airlines
Sat 5/96:00 am
FCA
- ONT
1 stop7h 38m
United Airlines
Deal found 3/10![United Airlines logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1110:39 am
ONT
- HLN
1 stop6h 06m
Alaska Airlines
Wed 5/134:43 pm
HLN
- ONT
1 stop8h 15m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:05 pm
ONT
- MSO
1 stop6h 19m
Delta
Tue 8/45:40 am
MSO
- ONT
1 stop4h 21m
Delta
Deal found 3/8![Delta logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
ONT
- HLN
1 stop10h 45m
Alaska Airlines
Sat 4/186:22 pm
HLN
- ONT
1 stop6h 37m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:43 pm
ONT
- HLN
1 stop6h 50m
United Airlines
Sat 4/256:15 am
HLN
- ONT
2 stops12h 32m
United Airlines
Deal found 3/7![United Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:05 pm
ONT
- BZN
1 stop5h 54m
Delta
Sat 9/58:30 am
BZN
- ONT
1 stop5h 19m
Delta
Deal found 3/8![Delta logo]()
$281
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:10 am
ONT
- HLN
1 stop7h 29m
United Airlines
Sat 4/186:15 am
HLN
- ONT
2 stops12h 32m
United Airlines
Deal found 3/10![United Airlines logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:25 pm
ONT
- FCA
2 stops16h 47m
Alaska Airlines
Tue 4/148:26 pm
FCA
- ONT
1 stop14h 13m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:00 am
ONT
- FCA
1 stop4h 25m
Delta
Mon 5/255:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 3/7![Delta logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
ONT
- MSO
1 stop8h 35m
Alaska Airlines
Thu 4/161:53 pm
MSO
- ONT
1 stop11h 06m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:00 am
ONT
- HLN
1 stop5h 24m
Delta
Sat 4/251:05 pm
HLN
- ONT
1 stop4h 20m
Delta
Deal found 3/7![Delta logo]()
$294
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Tue 8/251:18 pm
ONT
- BIL
1 stop6h 42m
United Airlines
Sat 8/295:00 am
BIL
- ONT
2 stops8h 12m
United Airlines
Deal found 3/6![United Airlines logo]()
$400
This Alaska Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 am
ONT
- BIL
1 stop5h 26m
Alaska Airlines
Sat 5/212:47 pm
BIL
- ONT
1 stop12h 01m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 3/6. 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.
Sun 4/56:00 am
ONT
- BZN
1 stop4h 02m
Delta
Sun 4/126:30 pm
BZN
- ONT
1 stop6h 24m
Delta
Deal found 3/6![Delta logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/272:09 pm
ONT
- MSO
1 stop7h 43m
Alaska Airlines
Sun 8/27:00 am
MSO
- ONT
1 stop7h 13m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Sun 4/126:21 pm
BIL
- ONT
1 stop6h 33m
Delta
Deal found 3/7![Delta logo]()
$296
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:00 am
ONT
- WYS
1 stop7h 28m
United Airlines
Wed 5/132:03 pm
WYS
- ONT
1 stop7h 33m
United Airlines
Deal found 3/10![United Airlines logo]()
$470
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Sun 5/318:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$325
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated March 11, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated March 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sat 3/147:31 pm
ONT
- BZN
1 stop13h 07m
Multiple Airlines
Sun 3/2210:28 am
BZN
- ONT
1 stop22h 38m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$234
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/76:00 am
ONT
- FCA
1 stop4h 26m
Delta
Sat 4/116:45 pm
FCA
- ONT
1 stop5h 03m
Delta
Deal found 3/6![Delta logo]()
$257
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:09 pm
ONT
- BZN
1 stop5h 01m
Delta
Mon 4/136:34 pm
BZN
- ONT
1 stop6h 10m
Delta
Deal found 3/8![Delta logo]()
$232
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/217:00 am
ONT
- BZN
1 stop14h 40m
Delta
Wed 4/297:18 am
BZN
- ONT
1 stop10h 57m
Delta
Deal found 3/6![Delta logo]()
$185
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/217:00 am
ONT
- BZN
1 stop14h 40m
Delta
Tue 4/2811:59 am
BZN
- ONT
2 stops11h 38m
Delta
Deal found 3/6![Delta logo]()
$190
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 4/217:00 am
ONT
- BZN
1 stop5h 10m
Alaska Airlines
Fri 4/248:00 am
BZN
- ONT
1 stop7h 32m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/2111:53 am
ONT
- BZN
2 stops11h 16m
Delta
Fri 4/2411:59 am
BZN
- ONT
1 stop5h 26m
Delta
Deal found 3/6![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 3/6. 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 4/236:00 am
ONT
- BZN
1 stop4h 04m
Delta
Wed 4/297:18 am
BZN
- ONT
1 stop7h 21m
Delta
Deal found 3/6![Delta logo]()
$208
This Delta deal was found by Cheapflights users on 3/6. 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 4/236:00 am
ONT
- BZN
1 stop4h 04m
Delta
Tue 4/2811:59 am
BZN
- ONT
2 stops11h 38m
Delta
Deal found 3/6![Delta logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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.
Fri 4/243:26 pm
ONT
- BZN
1 stop7h 32m
Alaska Airlines
Mon 4/277:59 pm
BZN
- ONT
2 stops19h 20m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/243:26 pm
ONT
- BZN
1 stop7h 32m
Alaska Airlines
Sun 4/268:00 am
BZN
- ONT
1 stop26h 45m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 3/6. 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.
Sun 4/266:00 am
ONT
- BZN
1 stop4h 04m
Delta
Tue 4/283:15 pm
BZN
- ONT
1 stop8h 22m
Delta
Deal found 3/6![Delta logo]()
$228
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 March 11, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated March 11, 2026.
This Trip.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:03 pm
ONT
- BZN
1 stop10h 32m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$98
This Trip.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:44 pm
ONT
- BZN
1 stop12h 51m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:44 am
ONT
- FCA
1 stop22h 59m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$104
This Trip.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/14:52 pm
ONT
- FCA
1 stop16h 16m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$107
This Trip.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:00 pm
ONT
- FCA
1 stop6h 22m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$111
This Alaska Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$116
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
ONT
- FCA
1 stop4h 23m
Delta
Deal found 3/9![Delta logo]()
$119
This CheapOair deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:00 am
ONT
- BZN
1 stop11h 46m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$121
This Trip.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/234:00 pm
ONT
- FCA
1 stop6h 59m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$123
This Delta deal was found by Cheapflights users on 3/6. 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 4/116:00 am
ONT
- BZN
1 stop3h 48m
Delta
Deal found 3/6![Delta logo]()
$124
This Alaska Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:39 am
ONT
- BZN
1 stop7h 40m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$126
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/35:09 pm
ONT
- FCA
1 stop5h 32m
Delta
Deal found 3/10![Delta logo]()
$129
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 March 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $185 (Delta) |
One-way from | $98 (Trip.com) |
Popular in | March |
Cheapest in | January |
Average price | $418 |
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 March 11, 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
Tue 4/21
7:00 am-10:40 pm
1 stop14h 40m
Bozeman Gallatin Field
Wed 4/29
7:18 am-5:15 pm
1 stop10h 57m
$185
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sat 7/25
2:09 pm-11:22 pm
1 stop8h 13m
Bozeman Gallatin Field
Mon 7/27
6:00 am-11:14 am
1 stop6h 14m
$231
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 8/31
9:55 am-2:46 pm
1 stop3h 51m
Bozeman Gallatin Field
Sun 9/6
11:30 am-4:14 pm
1 stop5h 44m
$231
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sat 4/11
6:00 am-10:48 am
1 stop3h 48m
Bozeman Gallatin Field
Mon 4/13
6:34 pm-11:44 pm
1 stop6h 10m
$247
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Mon 8/31
5:05 pm-11:59 pm
1 stop5h 54m
Bozeman Gallatin Field
Mon 9/7
5:45 am-9:01 am
1 stop4h 16m
$255
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Tue 7/28
7:00 am-2:36 pm
1 stop6h 36m
Bozeman Gallatin Field
Mon 8/3
5:45 am-9:01 am
1 stop4h 16m
$255
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Wed 4/1
2:35 pm-12:10 am
2 stops8h 35m
Bozeman Gallatin Field
Tue 4/7
3:20 pm-9:50 pm
1 stop7h 30m
$256
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Tue 4/14
6:00 am-10:40 am
1 stop27h 40m
Bozeman Gallatin Field
Wed 4/15
7:26 pm-11:59 pm
1 stop5h 33m
$277
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Tue 7/21
5:38 pm-10:42 am
1 stop16h 04m
Missoula Johnson-Bell Field
Wed 7/29
7:00 am-1:13 pm
1 stop7h 13m
$281
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Tue 7/28
5:05 pm-12:24 am
1 stop6h 19m
Missoula Johnson-Bell Field
Tue 8/4
5:40 am-9:01 am
1 stop4h 21m
$281
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-SDY
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-SDY
ONT-BIL
What is the cheapest month to book a flight from Ontario to Montana?
Currently, April is the cheapest month in which you can book a flight from Ontario to Montana (average of $83). Flying from Ontario to Montana in October is currently the most expensive (average of $187). 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.
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 March 11, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Ontario to Montana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Comfort
7.8
Food
7.1
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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 March 11, 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 March 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$409 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$184 | Average$381 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$351 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$211 | Average$350 | FlexibilityNo cancel fee | On-time63% |