$119+ Cheap flights from Montana to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ONT
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Cheapest flights from Montana to OntarioExplore the most affordable flight options available from Montana to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
Explore the most affordable flight options available from Montana to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
This Delta deal was found by Cheapflights users on 10/6. 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 11/96:23 pm -
1 stop6h 26m
Wed 11/186:00 am -
1 stop5h 05m
Deal found 10/6![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 10/5. 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 11/36:45 am -
1 stop6h 10m
Tue 11/101:30 pm -
2 stops7h 05m
Deal found 10/5![Southwest logo]()
$242
This Mytrip deal was found by Cheapflights users on 10/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
1 stop9h 13m
Thu 11/127:13 pm -
1 stop13h 26m
Deal found 10/6![Alaska Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 10/6. 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 11/136:23 pm -
1 stop6h 26m
Tue 11/175:04 pm -
1 stop6h 15m
Deal found 10/6![Delta logo]()
$268
This United Airlines deal was found by Cheapflights users on 10/6. 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 12/234:20 pm -
1 stop7h 33m
Tue 12/295:00 am -
1 stop7h 39m
Deal found 10/6![United Airlines logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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.
Sun 11/157:00 am -
1 stop17h 06m
Wed 11/186:00 am -
1 stop7h 14m
Deal found 10/6![Alaska Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 10/8. 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.
Fri 10/235:30 am -
1 stop4h 25m
Tue 10/275:03 pm -
1 stop6h 24m
Deal found 10/8![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 10/8. 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 10/195:30 am -
1 stop4h 25m
Tue 10/276:00 am -
1 stop5h 07m
Deal found 10/8![Delta logo]()
$303
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/236:15 pm -
1 stop5h 00m
Tue 10/2711:25 am -
2 stops7h 20m
Deal found 10/8![Southwest logo]()
$304
This Delta deal was found by Cheapflights users on 10/6. 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 11/56:13 pm -
1 stop4h 58m
Mon 11/95:56 pm -
2 stops16h 35m
Deal found 10/6![Delta logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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.
Fri 10/302:55 pm -
1 stop4h 10m
Tue 11/34:09 pm -
1 stop16h 30m
Deal found 10/7![Alaska Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 10/7. 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.
Mon 11/96:17 pm -
1 stop6h 32m
Mon 11/166:00 am -
1 stop4h 31m
Deal found 10/7![Delta logo]()
$327
Best flights from Montana to OntarioDiscover carefully curated flight deals from Montana to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
Discover carefully curated flight deals from Montana to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
This Southwest deal was found by Cheapflights users on 10/5. 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 11/36:45 am -
1 stop6h 10m
Tue 11/101:30 pm -
2 stops7h 05m
Deal found 10/5![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Fri 10/234:30 pm -
1 stop5h 28m
Tue 10/275:00 am -
1 stop7h 30m
Deal found 10/8![United Airlines logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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.
Fri 10/302:55 pm -
1 stop4h 10m
Tue 11/34:09 pm -
1 stop16h 30m
Deal found 10/7![Alaska Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 10/5. 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 11/176:17 pm -
1 stop6h 32m
Tue 12/16:00 am -
1 stop4h 38m
Deal found 10/5![Delta logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:57 am -
1 stop25h 35m
Sun 12/67:26 pm -
2 stops42h 46m
Deal found 10/8![Multiple Airlines logo]()
$453
This KAYAK deal was found by Cheapflights users on 10/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/27:42 am -
2 stops11h 34m
Thu 2/410:38 am -
1 stop8h 34m
Deal found 10/5![American Airlines logo]()
$547
This Delta deal was found by Cheapflights users on 10/7. 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.
Mon 11/96:17 pm -
1 stop6h 32m
Tue 11/176:00 am -
1 stop4h 31m
Deal found 10/7![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 11/144:41 pm -
1 stop19h 37m
Tue 11/176:00 am -
1 stop9h 04m
Deal found 10/8![Alaska Airlines logo]()
$333
This Southwest deal was found by Cheapflights users on 10/6. 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.
Wed 10/216:30 am -
1 stop5h 15m
Sun 10/257:15 pm -
1 stop5h 30m
Deal found 10/6![Southwest logo]()
$361
This Delta deal was found by Cheapflights users on 10/6. 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 10/305:30 am -
1 stop4h 25m
Sun 11/16:00 am -
1 stop5h 07m
Deal found 10/6![Delta logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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 11/91:50 pm -
1 stop5h 27m
Mon 11/167:13 pm -
1 stop13h 26m
Deal found 10/6![Alaska Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 10/6. 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 11/136:23 pm -
1 stop6h 26m
Sun 11/156:00 am -
1 stop5h 05m
Deal found 10/6![Delta logo]()
$330
This United Airlines deal was found by Cheapflights users on 10/4. 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.
Thu 1/211:33 pm -
1 stop5h 02m
Sun 1/245:00 am -
1 stop7h 42m
Deal found 10/4![United Airlines logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 10/5. 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.
Tue 2/910:31 am -
1 stop5h 49m
Sun 2/1412:00 pm -
1 stop5h 32m
Deal found 10/5![Alaska Airlines logo]()
$361
This Delta deal was found by Cheapflights users on 10/8. 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.
Fri 12/116:16 pm -
1 stop6h 41m
Tue 12/156:00 am -
1 stop4h 38m
Deal found 10/8![Delta logo]()
$338
This United Airlines deal was found by Cheapflights users on 10/5. 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 10/312:36 pm -
1 stop7h 15m
Mon 11/25:00 am -
1 stop7h 34m
Deal found 10/5![United Airlines logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 10/5. 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.
Fri 2/53:52 pm -
1 stop5h 10m
Wed 2/176:00 am -
1 stop7h 06m
Deal found 10/5![Alaska Airlines logo]()
$361
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Thu 12/172:45 pm -
1 stop7h 15m
Fri 1/15:00 am -
1 stop7h 39m
Deal found 10/6![United Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 10/9. 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.
Thu 10/291:12 pm -
1 stop4h 11m
Sun 11/16:00 am -
1 stop5h 07m
Deal found 10/9![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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 11/115:10 pm -
1 stop26h 07m
Wed 11/186:00 am -
1 stop9h 30m
Deal found 10/6![Alaska Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Tue 11/32:45 pm -
1 stop7h 06m
Tue 11/105:00 am -
1 stop7h 49m
Deal found 10/8![United Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 10/4. 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.
Sun 12/206:16 pm -
1 stop6h 43m
Sat 1/96:00 am -
1 stop4h 49m
Deal found 10/4![Delta logo]()
$373
This United Airlines deal was found by Cheapflights users on 10/8. 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 11/146:30 am -
1 stop7h 03m
Tue 11/175:00 am -
1 stop7h 49m
Deal found 10/8![United Airlines logo]()
$438
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Sat 10/318:01 am -
1 stop6h 15m
Mon 11/26:00 am -
1 stop5h 15m
Deal found 10/4![Alaska Airlines logo]()
$400
This Delta deal was found by Cheapflights users on 10/6. 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 10/275:20 am -
1 stop4h 35m
Fri 10/306:00 am -
1 stop5h 18m
Deal found 10/6![Delta logo]()
$391
This United Airlines deal was found by Cheapflights users on 10/4. 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.
Mon 10/192:28 pm -
1 stop7h 30m
Fri 10/231:24 pm -
1 stop6h 46m
Deal found 10/4![United Airlines logo]()
$441
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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.
Sat 12/53:32 pm -
1 stop9h 22m
Wed 12/96:00 am -
1 stop28h 24m
Deal found 10/7![Alaska Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 10/6. 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 11/112:45 pm -
1 stop7h 06m
Wed 11/189:25 am -
2 stops11h 13m
Deal found 10/6![United Airlines logo]()
$444
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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 1/135:00 pm -
1 stop6h 41m
Wed 1/203:05 pm -
2 stops24h 18m
Deal found 10/7![Alaska Airlines logo]()
$447
This United Airlines deal was found by Cheapflights users on 10/7. 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.
Wed 1/136:15 am -
1 stop7h 25m
Wed 1/201:42 pm -
1 stop6h 50m
Deal found 10/7![United Airlines logo]()
$449
Last-minute flights from Montana to OntarioDiscover last-minute flight deals from Montana to Ontario. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to Ontario. Data last updated October 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/8. 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 10/195:30 am -
1 stop4h 25m
Tue 10/276:00 am -
1 stop5h 07m
Deal found 10/8![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 10/8. 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.
Fri 10/235:30 am -
1 stop4h 25m
Tue 10/275:03 pm -
1 stop6h 24m
Deal found 10/8![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/236:15 pm -
1 stop5h 00m
Tue 10/2711:25 am -
2 stops7h 20m
Deal found 10/8![Southwest logo]()
$304
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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.
Fri 10/302:55 pm -
1 stop4h 10m
Tue 11/34:09 pm -
1 stop16h 30m
Deal found 10/7![Alaska Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 10/5. 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 11/36:45 am -
1 stop6h 10m
Tue 11/101:30 pm -
2 stops7h 05m
Deal found 10/5![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 10/6. 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 11/56:13 pm -
1 stop4h 58m
Mon 11/95:56 pm -
2 stops16h 35m
Deal found 10/6![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 10/6. 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 11/96:23 pm -
1 stop6h 26m
Thu 11/196:00 am -
1 stop5h 05m
Deal found 10/6![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 10/7. 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.
Mon 11/96:17 pm -
1 stop6h 32m
Fri 11/206:00 am -
1 stop4h 31m
Deal found 10/7![Delta logo]()
$327
This Mytrip deal was found by Cheapflights users on 10/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
1 stop9h 13m
Thu 11/127:13 pm -
1 stop13h 26m
Deal found 10/6![Alaska Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 10/6. 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 11/136:23 pm -
1 stop6h 26m
Thu 11/196:00 am -
1 stop5h 05m
Deal found 10/6![Delta logo]()
$268
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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.
Sun 11/157:00 am -
1 stop17h 06m
Wed 11/186:00 am -
1 stop7h 14m
Deal found 10/6![Alaska Airlines logo]()
$290
This Trip.com deal was found by Cheapflights users on 10/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:00 am -
1 stop7h 38m
Tue 11/174:09 pm -
1 stop5h 43m
Deal found 10/8![Multiple Airlines logo]()
$316
One-way flights from Montana to OntarioSearch for one-way flight options from Montana to Ontario. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
Search for one-way flight options from Montana to Ontario. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This Priceline deal was found by Cheapflights users on 10/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:50 pm -
1 stop5h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Alaska Airlines logo]()
$119
This Mytrip deal was found by Cheapflights users on 10/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:55 pm -
1 stop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Alaska Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 10/6. 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.
Thu 11/1910:42 am -
1 stop6h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$139
This Trip.com deal was found by Cheapflights users on 10/6. 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.
Fri 10/302:55 pm -
1 stop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Alaska Airlines logo]()
$143
This Delta deal was found by Cheapflights users on 10/7. 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 11/136:23 pm -
1 stop6h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Delta logo]()
$150
This United Airlines deal was found by Cheapflights users on 10/7. 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.
Thu 11/52:36 pm -
1 stop7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![United Airlines logo]()
$164
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Sat 10/314:32 pm -
1 stop5h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![United Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 10/7. 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 12/312:28 pm -
2 stops11h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Delta logo]()
$172
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 11/134:41 pm -
1 stop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Alaska Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 10/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:47 am -
1 stop22h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$176
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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.
Fri 11/67:00 am -
1 stop17h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Alaska Airlines logo]()
$178
This Priceline deal was found by Cheapflights users on 10/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:10 pm -
1 stop6h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Alaska Airlines logo]()
$179
Find flight deals from Montana to Ontario
Keep the following information in mind while searching for Montana to Ontario flight deals. Data was last updated October 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $237 (Delta) |
One-way from | $119 (Priceline) |
Popular in | July |
Cheapest in | January |
Average price | $359 |
Cheapflights Fare Finder
Customize your flight search to find flights from Montana to Ontario 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 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Montana to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BozemanOntario
BZN Bozeman Gallatin Field - ONT Ontario
BZNONT
Bozeman Gallatin Field
Sat 11/7
6:31 pm-10:11 pm
1 stop4h 40m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
BozemanOntario
BZN Bozeman Gallatin Field - ONT Ontario
BZNONT
Bozeman Gallatin Field
Wed 11/11
6:23 pm-11:49 pm
1 stop6h 26m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
BozemanOntario
BZN Bozeman Gallatin Field - ONT Ontario
BZNONT
Bozeman Gallatin Field
Fri 11/13
6:23 pm-11:49 pm
1 stop6h 26m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$150
KalispellOntario
FCA Kalispell Glacier Park - ONT Ontario
FCAONT
Kalispell Glacier Park
Thu 11/5
2:36 pm-8:51 pm
1 stop7h 15m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
KalispellOntario
FCA Kalispell Glacier Park - ONT Ontario
FCAONT
Kalispell Glacier Park
Thu 10/29
2:36 pm-8:51 pm
1 stop7h 15m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
KalispellOntario
FCA Kalispell Glacier Park - ONT Ontario
FCAONT
Kalispell Glacier Park
Mon 10/26
5:30 am-8:55 am
1 stop4h 25m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
BozemanOntario
BZN Bozeman Gallatin Field - ONT Ontario
BZNONT
Bozeman Gallatin Field
Sat 10/31
4:32 pm-8:51 pm
1 stop5h 19m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$169
BozemanOntario
BZN Bozeman Gallatin Field - ONT Ontario
BZNONT
Bozeman Gallatin Field
Mon 11/9
4:13 pm-8:15 pm
1 stop5h 02m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$169
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Fri 11/13
4:41 pm-11:06 pm
1 stop7h 25m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$175
Great FallsOntario
GTF Great Falls - ONT Ontario
GTFONT
Great Falls
Thu 11/12
5:10 pm-11:06 pm
1 stop6h 56m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$179
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Montana to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Montana with our price prediction graph.
BZN-ONT
FCA-ONT
HLN-ONT
GTF-ONT
MSO-ONT
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 Montana to Ontario
USMT-ONT
BZN-ONT
FCA-ONT
HLN-ONT
GTF-ONT
What is the cheapest month to book a flight from Montana to Ontario?
Currently, January is the cheapest month in which you can book a flight from Montana to Ontario (average of $273). Flying from Montana to Ontario in October is currently the most expensive (average of $507). 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 Montana to Ontario?
Airfare is below average for this route at the moment.
Montana to Ontario flights typically cost between $387 and $507 in November.The cheapest round-trip price found within the last 5 days was $237 on Delta (Nov 9-Nov 18).
Related info for your journey
Find useful and relevant information for your journey from Montana to Ontario. 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.
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Complete your trip
Flights by cabin class
Ontario flight routes
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Popular flights
Top destinations
Alternative routes for Montana to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Montana to Ontario by cabin class
Find flights from Montana to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 9, 2026.
Montana and Ontario flights
Browse other Montana and Ontario flight options. Last updated on October 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Montana to Ontario flights
Consider these flights traveling from Montana to Ontario.
Top 4 airlines flying from Montana to Ontario
Discover the top 4 airlines that operate flights from Montana to Ontario. 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 7,457,451 searches. Data last updated October 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$381 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$164 | Average$361 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$370 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$223 | Average$479 | FlexibilityNo cancel fee | On-time63% |