$139+ Cheap flights from Ontario (ONT) to Montana
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Aug 5 — Aug 121
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Montana with Cheapflights
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Cheapest flights from Ontario to MontanaExplore the most affordable flight options available from Ontario to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 6, 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 July 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/193:13 pm
ONT
- MSO
2 stops28h 49m
Multiple Airlines
Sun 8/239:52 pm
MSO
- ONT
1 stop11h 11m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/193:13 pm
ONT
- BZN
2 stops23h 53m
Multiple Airlines
Sun 8/239:06 pm
BZN
- ONT
1 stop20h 16m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 11/47:15 am
ONT
- FCA
1 stop5h 10m
Alaska Airlines
Sat 11/71:05 pm
FCA
- ONT
1 stop4h 53m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:08 pm
ONT
- MSO
1 stop15h 26m
Multiple Airlines
Thu 8/209:52 pm
MSO
- ONT
1 stop11h 11m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/203:40 pm
ONT
- FCA
1 stop17h 24m
Multiple Airlines
Mon 8/243:39 pm
FCA
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/126:00 am
ONT
- WYS
1 stop3h 47m
Delta
Sat 9/191:09 pm
WYS
- ONT
1 stop4h 26m
Delta
Deal found 7/4![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 10/106:00 am
ONT
- FCA
1 stop4h 45m
Delta
Thu 10/155:30 am
FCA
- ONT
1 stop4h 25m
Delta
Deal found 7/3![Delta logo]()
$296
This Expedia deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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.
Tue 9/223:14 pm
ONT
- FCA
1 stop6h 42m
Alaska Airlines
Sat 9/268:21 pm
FCA
- ONT
1 stop15h 55m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:00 am
ONT
- BZN
1 stop4h 17m
Delta
Tue 7/215:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 7/3![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:05 pm
ONT
- BIL
1 stop4h 20m
Delta
Wed 8/125:20 am
BIL
- ONT
1 stop4h 32m
Delta
Deal found 7/3![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 8/75:05 pm
ONT
- HLN
1 stop4h 25m
Delta
Sun 8/95:40 am
HLN
- ONT
1 stop4h 12m
Delta
Deal found 7/1![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/26:00 am
ONT
- HLN
1 stop5h 15m
Delta
Sun 9/65:40 am
HLN
- ONT
2 stops9h 28m
Delta
Deal found 7/4![Delta logo]()
$324
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 July 6, 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 July 6, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 11/47:15 am
ONT
- FCA
1 stop5h 10m
Alaska Airlines
Sat 11/71:05 pm
FCA
- ONT
1 stop4h 53m
Alaska Airlines
Deal found 7/4![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 7/5. 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 9/145:15 pm
ONT
- FCA
1 stop4h 39m
Delta
Fri 9/186:00 pm
FCA
- ONT
1 stop6h 47m
Delta
Deal found 7/5![Delta logo]()
$277
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 10/85:30 am
ONT
- BZN
1 stop9h 05m
Southwest
Mon 10/126:15 pm
BZN
- ONT
2 stops6h 30m
Southwest
Deal found 7/3![Southwest logo]()
$366
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/231:56 pm
ONT
- BIL
2 stops7h 57m
United Airlines
Thu 9/242:28 pm
BIL
- ONT
1 stop7h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/225:15 pm
ONT
- FCA
1 stop4h 39m
Delta
Mon 9/285:30 am
FCA
- ONT
1 stop4h 32m
Delta
Deal found 7/4![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 10/106:00 am
ONT
- FCA
1 stop4h 45m
Delta
Thu 10/155:30 am
FCA
- ONT
1 stop4h 25m
Delta
Deal found 7/2![Delta logo]()
$296
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 9/196:00 am
ONT
- FCA
1 stop4h 47m
Delta
Tue 9/226:00 pm
FCA
- ONT
1 stop6h 47m
Delta
Deal found 7/2![Delta logo]()
$296
This Alaska Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:15 am
ONT
- BIL
1 stop6h 37m
Alaska Airlines
Mon 11/96:00 am
BIL
- ONT
1 stop6h 18m
Alaska Airlines
Deal found 7/3![Alaska Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Sat 8/221:18 pm
ONT
- COD
1 stop8h 27m
United Airlines
Wed 8/265:00 am
COD
- ONT
1 stop8h 50m
United Airlines
Deal found 7/5![United Airlines logo]()
$378
This Alaska Airlines deal was found by Cheapflights users on 7/6. 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.
Mon 8/243:07 pm
ONT
- BZN
1 stop6h 52m
Alaska Airlines
Mon 8/313:35 pm
BZN
- ONT
1 stop5h 49m
Alaska Airlines
Deal found 7/6![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 7/6. 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 8/26:00 am
ONT
- BZN
1 stop4h 17m
Delta
Thu 8/66:00 am
BZN
- ONT
1 stop3h 52m
Delta
Deal found 7/6![Delta logo]()
$311
This United Airlines deal was found by Cheapflights users on 7/5. 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 8/145:00 am
ONT
- COD
1 stop7h 50m
United Airlines
Thu 8/205:00 am
COD
- ONT
2 stops8h 12m
United Airlines
Deal found 7/5![United Airlines logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:02 am
ONT
- HLN
1 stop9h 09m
Alaska Airlines
Wed 11/44:41 pm
HLN
- ONT
1 stop7h 13m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:05 pm
ONT
- BZN
1 stop5h 59m
Delta
Mon 8/246:00 am
BZN
- ONT
1 stop3h 52m
Delta
Deal found 7/2![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:00 am
ONT
- BZN
1 stop4h 17m
Delta
Tue 7/215:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 7/3![Delta logo]()
$311
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 10/155:00 am
ONT
- FCA
1 stop7h 28m
United Airlines
Sun 10/184:17 pm
FCA
- ONT
1 stop7h 42m
United Airlines
Deal found 7/1![United Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/26:02 am
ONT
- BZN
1 stop7h 36m
Alaska Airlines
Sun 9/63:35 pm
BZN
- ONT
1 stop5h 49m
Alaska Airlines
Deal found 7/4![Alaska Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 9/255:15 pm
ONT
- BZN
1 stop6h 00m
Delta
Tue 9/296:00 am
BZN
- ONT
1 stop4h 02m
Delta
Deal found 7/2![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/146:14 pm
ONT
- BIL
2 stops23h 35m
Alaska Airlines
Tue 9/226:14 am
BIL
- ONT
1 stop6h 02m
Alaska Airlines
Deal found 7/1![Alaska Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:00 am
ONT
- MSO
1 stop7h 38m
United Airlines
Thu 8/206:15 am
MSO
- ONT
1 stop7h 35m
United Airlines
Deal found 7/4![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 7/5. 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.
Wed 8/125:05 pm
ONT
- BIL
1 stop4h 20m
Delta
Mon 8/175:20 am
BIL
- ONT
1 stop4h 32m
Delta
Deal found 7/5![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 8/186:02 am
ONT
- BIL
1 stop6h 03m
Alaska Airlines
Mon 8/247:20 pm
BIL
- ONT
2 stops21h 27m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/5. 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 11/49:00 am
ONT
- BIL
2 stops12h 16m
United Airlines
Sat 11/72:29 pm
BIL
- ONT
2 stops9h 24m
United Airlines
Deal found 7/5![United Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/145:15 pm
ONT
- BIL
1 stop4h 19m
Delta
Tue 9/226:33 pm
BIL
- ONT
1 stop6h 14m
Delta
Deal found 7/1![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 7/5. 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 11/44:09 pm
ONT
- BIL
1 stop5h 34m
Alaska Airlines
Sat 11/711:55 am
BIL
- ONT
2 stops12h 54m
Alaska Airlines
Deal found 7/5![Alaska Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 7/5. 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.
Tue 8/256:00 am
ONT
- HLN
1 stop5h 15m
Delta
Sat 8/296:50 am
HLN
- ONT
1 stop6h 26m
Delta
Deal found 7/5![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:00 am
ONT
- COD
1 stop7h 19m
United Airlines
Sat 8/15:15 am
COD
- ONT
1 stop8h 32m
United Airlines
Deal found 7/4![United Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 30m
United Airlines
Fri 10/92:05 pm
WYS
- ONT
1 stop7h 53m
United Airlines
Deal found 7/4![United Airlines logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:13 pm
ONT
- MSO
1 stop6h 46m
Alaska Airlines
Sat 10/242:06 pm
MSO
- ONT
1 stop10h 39m
Alaska Airlines
Deal found 7/3![Alaska Airlines logo]()
$441
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/26:00 am
ONT
- HLN
1 stop5h 15m
Delta
Tue 9/87:15 am
HLN
- ONT
1 stop5h 59m
Delta
Deal found 7/4![Delta logo]()
$338
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated July 6, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated July 6, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
ONT
- BZN
1 stop4h 17m
Delta
Mon 7/205:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 7/3![Delta logo]()
$325
This Southwest deal was found by Cheapflights users on 7/6. 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 7/174:00 pm
ONT
- BZN
2 stops8h 15m
Southwest
Thu 7/237:15 pm
BZN
- ONT
1 stop5h 20m
Southwest
Deal found 7/6![Southwest logo]()
$330
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:00 am
ONT
- BZN
1 stop4h 17m
Delta
Tue 7/215:15 am
BZN
- ONT
1 stop4h 32m
Delta
Deal found 7/3![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/6. 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 7/225:10 pm
ONT
- BIL
1 stop4h 40m
Delta
Tue 7/286:34 pm
BIL
- ONT
1 stop6h 14m
Delta
Deal found 7/6![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 7/6. 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 8/56:00 am
ONT
- WYS
1 stop5h 27m
Delta
Sat 8/811:29 am
WYS
- ONT
1 stop5h 55m
Delta
Deal found 7/6![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:05 pm
ONT
- BIL
1 stop4h 20m
Delta
Wed 8/125:20 am
BIL
- ONT
1 stop4h 32m
Delta
Deal found 7/3![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 8/75:05 pm
ONT
- HLN
1 stop4h 25m
Delta
Sun 8/95:40 am
HLN
- ONT
1 stop4h 12m
Delta
Deal found 7/1![Delta logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:08 pm
ONT
- MSO
1 stop15h 26m
Multiple Airlines
Thu 8/209:52 pm
MSO
- ONT
1 stop11h 11m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 8/175:05 pm
ONT
- FCA
1 stop4h 48m
Delta
Wed 8/265:15 am
FCA
- ONT
1 stop4h 37m
Delta
Deal found 7/4![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/193:13 pm
ONT
- MSO
2 stops28h 49m
Multiple Airlines
Sun 8/239:52 pm
MSO
- ONT
1 stop11h 11m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/193:13 pm
ONT
- BZN
2 stops23h 53m
Multiple Airlines
Sun 8/239:06 pm
BZN
- ONT
1 stop20h 16m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/203:40 pm
ONT
- FCA
1 stop17h 24m
Multiple Airlines
Mon 8/243:39 pm
FCA
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$288
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 July 6, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated July 6, 2026.
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 8/96:00 am
ONT
- FCA
1 stop4h 09m
Delta
Deal found 7/1![Delta logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 10/39:49 pm
ONT
- BZN
1 stop12h 22m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 8/811:47 am
ONT
- BZN
1 stop27h 14m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$144
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 9/226:00 am
ONT
- BZN
1 stop5h 03m
Delta
Deal found 7/3![Delta logo]()
$156
This Delta deal was found by Cheapflights users on 7/5. 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.
Tue 8/45:05 pm
ONT
- BIL
1 stop4h 20m
Delta
Deal found 7/5![Delta logo]()
$156
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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 9/276:00 am
ONT
- HLN
1 stop5h 17m
Delta
Deal found 7/2![Delta logo]()
$160
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:59 pm
ONT
- BZN
1 stop12h 43m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$161
This Priceline deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/82:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$170
This Alaska Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:07 pm
ONT
- FCA
1 stop6h 49m
Alaska Airlines
Deal found 7/3![Alaska Airlines logo]()
$170
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:10 pm
ONT
- BZN
1 stop13h 37m
Alaska Airlines
Deal found 7/1![Alaska Airlines logo]()
$175
This Alaska Airlines deal was found by Cheapflights users on 7/5. 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.
Mon 8/313:07 pm
ONT
- BIL
1 stop7h 22m
Alaska Airlines
Deal found 7/5![Alaska Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” 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.
Sun 9/2711:16 am
ONT
- BZN
2 stops23h 58m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$184
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 July 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $263 (Kiwi.com) |
One-way from | $139 (Delta) |
Popular in | May |
Cheapest in | January |
Average price | $392 |
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 July 6, 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
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Wed 11/4
7:15 am-1:25 pm
1 stop5h 10m
Kalispell Glacier Park
Sat 11/7
1:05 pm-4:58 pm
1 stop4h 53m
$277
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Mon 9/14
5:15 pm-10:54 pm
1 stop4h 39m
Kalispell Glacier Park
Fri 9/18
6:00 pm-11:47 pm
1 stop6h 47m
$277
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Tue 9/22
5:15 pm-10:54 pm
1 stop4h 39m
Kalispell Glacier Park
Mon 9/28
5:30 am-9:02 am
1 stop4h 32m
$277
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Sat 10/10
6:00 am-11:45 am
1 stop4h 45m
Kalispell Glacier Park
Thu 10/15
5:30 am-8:55 am
1 stop4h 25m
$296
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
Sat 9/19
6:00 am-11:47 am
1 stop4h 47m
Kalispell Glacier Park
Tue 9/22
6:00 pm-11:47 pm
1 stop6h 47m
$296
Quickest round-trip
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sun 8/2
6:00 am-11:17 am
1 stop4h 17m
Bozeman Gallatin Field
Thu 8/6
6:00 am-8:52 am
1 stop3h 52m
$311
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Fri 8/21
5:05 pm-12:04 am
1 stop5h 59m
Bozeman Gallatin Field
Mon 8/24
6:00 am-8:52 am
1 stop3h 52m
$311
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Sun 7/19
6:00 am-11:17 am
1 stop4h 17m
Bozeman Gallatin Field
Tue 7/21
5:15 am-8:47 am
1 stop4h 32m
$311
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
Fri 9/25
5:15 pm-12:15 am
1 stop6h 00m
Bozeman Gallatin Field
Tue 9/29
6:00 am-9:02 am
1 stop4h 02m
$311
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Wed 8/12
5:05 pm-10:25 pm
1 stop4h 20m
Billings Logan Intl
Mon 8/17
5:20 am-8:52 am
1 stop4h 32m
$311
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-FCA
ONT-BZN
ONT-BIL
ONT-COD
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-FCA
ONT-BZN
ONT-BIL
ONT-COD
What is the cheapest month to book a flight from Ontario to Montana?
Currently, June is the cheapest month in which you can book a flight from Ontario to Montana (average of $145). 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.
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 July 6, 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.
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
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 July 6, 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 July 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$439 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$189 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$372 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$230 | Average$412 | FlexibilityNo cancel fee | On-time63% |