$82+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
mai 23 — mai 301
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 april 23, 2026.
Explore the most affordable flight options available from Ontario to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on april 23, 2026.
This Expedia deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
lø. 5/166:00 am
ONT
- MSO
1 stop5h 16m
Alaska Airlines
lø. 5/232:03 pm
MSO
- ONT
1 stop5h 59m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
ti. 6/24:30 pm
ONT
- BZN
1 stop6h 45m
Southwest
ti. 6/97:05 pm
BZN
- ONT
1 stop4h 40m
Southwest
Deal found 4/22![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
lø. 5/306:45 am
ONT
- BZN
1 stop7h 32m
Delta
lø. 6/68:00 am
BZN
- ONT
1 stop5h 33m
Delta
Deal found 4/22![Delta logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
sø. 5/243:30 pm
ONT
- FCA
1 stop17h 16m
Multiple Airlines
ma. 6/110:36 am
FCA
- ONT
1 stop5h 33m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$226
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
fr. 8/146:00 am
ONT
- BZN
1 stop3h 40m
Delta
ma. 8/175:45 am
BZN
- ONT
1 stop4h 16m
Delta
Deal found 4/21![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
lø. 8/81:42 pm
ONT
- BZN
1 stop8h 09m
Delta
to. 8/133:40 pm
BZN
- ONT
1 stop8h 00m
Delta
Deal found 4/21![Delta logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
to. 5/78:17 pm
ONT
- MSO
2 stops22h 47m
Multiple Airlines
ma. 5/118:54 pm
MSO
- ONT
1 stop19h 50m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
on. 5/64:39 pm
ONT
- BZN
1 stop15h 56m
Multiple Airlines
sø. 5/1010:25 am
BZN
- ONT
1 stop22h 24m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
to. 8/136:00 am
ONT
- BZN
1 stop3h 40m
Delta
to. 8/133:40 pm
BZN
- ONT
1 stop8h 00m
Delta
Deal found 4/21![Delta logo]()
$257
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
ma. 6/14:57 pm
ONT
- BZN
1 stop6h 02m
Delta
ti. 6/28:00 am
BZN
- ONT
1 stop5h 33m
Delta
Deal found 4/22![Delta logo]()
$258
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
lø. 8/81:42 pm
ONT
- BZN
1 stop8h 09m
Delta
fr. 8/145:45 am
BZN
- ONT
1 stop4h 16m
Delta
Deal found 4/21![Delta logo]()
$260
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
on. 5/134:57 pm
ONT
- BZN
1 stop6h 02m
Delta
lø. 5/164:02 pm
BZN
- ONT
1 stop7h 32m
Delta
Deal found 4/20![Delta logo]()
$268
Best flights from Ontario to MontanaDiscover carefully curated flight deals from Ontario to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated april 23, 2026.
Discover carefully curated flight deals from Ontario to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated april 23, 2026.
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
ma. 8/249:55 am
ONT
- BZN
1 stop3h 51m
Delta
ma. 8/3111:30 am
BZN
- ONT
1 stop5h 44m
Delta
Deal found 4/21![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
ti. 8/257:10 am
ONT
- BZN
1 stop5h 14m
Alaska Airlines
ti. 9/83:40 pm
BZN
- ONT
1 stop5h 44m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
sø. 5/175:00 am
ONT
- MSO
1 stop7h 35m
United Airlines
lø. 5/232:26 pm
MSO
- ONT
1 stop7h 16m
United Airlines
Deal found 4/20![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
ma. 8/109:55 am
ONT
- BZN
1 stop3h 51m
Delta
fr. 8/145:45 am
BZN
- ONT
1 stop4h 16m
Delta
Deal found 4/21![Delta logo]()
$260
This Expedia deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
lø. 10/1012:00 pm
ONT
- SDY
2 stops20h 07m
Multiple Airlines
lø. 10/247:35 am
SDY
- ONT
2 stops11h 38m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$545
This Alaska Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
on. 5/274:03 pm
ONT
- FCA
1 stop6h 55m
Alaska Airlines
lø. 5/306:15 am
FCA
- ONT
1 stop5h 55m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
on. 5/274:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
lø. 5/302:03 pm
MSO
- ONT
1 stop5h 59m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
fr. 5/1511:52 am
ONT
- BZN
1 stop10h 29m
Delta
lø. 5/166:35 pm
BZN
- ONT
1 stop5h 10m
Delta
Deal found 4/23![Delta logo]()
$320
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
lø. 5/161:40 pm
ONT
- MSO
1 stop6h 50m
United Airlines
sø. 5/244:19 pm
MSO
- ONT
1 stop4h 45m
United Airlines
Deal found 4/20![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
on. 8/129:55 am
ONT
- BZN
1 stop3h 51m
Delta
on. 8/127:00 pm
BZN
- ONT
1 stop5h 44m
Delta
Deal found 4/21![Delta logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
lø. 5/307:00 am
ONT
- BIL
1 stop6h 54m
Alaska Airlines
on. 6/37:21 pm
BIL
- ONT
1 stop5h 37m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
on. 5/205:00 am
ONT
- WYS
1 stop7h 28m
United Airlines
on. 5/272:19 pm
WYS
- ONT
1 stop7h 23m
United Airlines
Deal found 4/20![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
lø. 5/165:55 pm
ONT
- MSO
1 stop4h 21m
Delta
lø. 5/236:05 pm
MSO
- ONT
1 stop5h 40m
Delta
Deal found 4/20![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
to. 7/302:05 pm
ONT
- BZN
1 stop8h 14m
Alaska Airlines
ma. 8/36:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$345
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
to. 5/75:00 am
ONT
- WYS
1 stop7h 28m
United Airlines
ti. 5/122:03 pm
WYS
- ONT
1 stop7h 33m
United Airlines
Deal found 4/23![United Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
ti. 5/126:00 am
ONT
- FCA
1 stop4h 28m
Delta
lø. 5/166:07 pm
FCA
- ONT
1 stop5h 38m
Delta
Deal found 4/22![Delta logo]()
$344
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
fr. 5/154:03 pm
ONT
- BIL
1 stop6h 30m
Alaska Airlines
on. 5/206:00 am
BIL
- ONT
1 stop6h 12m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
to. 5/214:57 pm
ONT
- MSO
1 stop6h 25m
Delta
to. 5/286:05 pm
MSO
- ONT
1 stop6h 29m
Delta
Deal found 4/21![Delta logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
on. 5/204:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
on. 5/274:12 pm
BZN
- ONT
2 stops8h 46m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
ti. 5/51:40 pm
ONT
- BIL
1 stop6h 17m
United Airlines
lø. 5/96:35 am
BIL
- ONT
2 stops12h 17m
United Airlines
Deal found 4/21![United Airlines logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
fr. 5/156:00 am
ONT
- BZN
1 stop12h 05m
Alaska Airlines
ma. 5/187:59 pm
BZN
- ONT
1 stop20h 10m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
lø. 7/116:00 am
ONT
- WYS
1 stop3h 41m
Delta
fr. 7/171:09 pm
WYS
- ONT
1 stop4h 26m
Delta
Deal found 4/19![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
fr. 5/225:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
ti. 5/262:19 pm
WYS
- ONT
1 stop7h 23m
United Airlines
Deal found 4/18![United Airlines logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
to. 5/287:41 pm
ONT
- FCA
1 stop14h 10m
Alaska Airlines
on. 6/36:15 am
FCA
- ONT
1 stop5h 57m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$400
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
fr. 7/175:16 pm
ONT
- BIL
1 stop4h 31m
Delta
sø. 7/195:18 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 4/20![Delta logo]()
$401
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
lø. 5/95:00 am
ONT
- WYS
1 stop7h 28m
United Airlines
on. 5/132:03 pm
WYS
- ONT
2 stops20h 38m
United Airlines
Deal found 4/21![United Airlines logo]()
$525
This Alaska Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
ma. 6/14:03 pm
ONT
- BZN
1 stop22h 29m
Alaska Airlines
fr. 7/316:03 am
BZN
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
on. 6/176:00 am
ONT
- FCA
1 stop4h 28m
Delta
sø. 6/215:19 am
FCA
- ONT
1 stop4h 28m
Delta
Deal found 4/20![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
to. 7/25:00 am
ONT
- WYS
1 stop7h 32m
United Airlines
ti. 7/72:07 pm
WYS
- ONT
1 stop7h 35m
United Airlines
Deal found 4/18![United Airlines logo]()
$538
This Alaska Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
sø. 5/36:00 am
ONT
- MSO
1 stop7h 59m
Alaska Airlines
to. 5/73:55 pm
MSO
- ONT
1 stop9h 04m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$411
Last-minute flights from Ontario to MontanaDiscover last-minute flight deals from Ontario to Montana. Data last updated april 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Montana. Data last updated april 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
ma. 5/45:05 pm
ONT
- BZN
1 stop6h 04m
Delta
fr. 5/85:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/19![Delta logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
on. 5/64:39 pm
ONT
- BZN
1 stop15h 56m
Multiple Airlines
sø. 5/1010:25 am
BZN
- ONT
1 stop22h 24m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
to. 5/78:17 pm
ONT
- MSO
2 stops22h 47m
Multiple Airlines
ma. 5/118:54 pm
MSO
- ONT
1 stop19h 50m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$251
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
ma. 5/114:57 pm
ONT
- BZN
1 stop6h 02m
Delta
fr. 5/155:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/23![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
ma. 5/116:00 am
ONT
- FCA
1 stop4h 28m
Delta
lø. 5/166:07 pm
FCA
- ONT
1 stop5h 38m
Delta
Deal found 4/20![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
on. 5/134:57 pm
ONT
- BZN
1 stop6h 02m
Delta
lø. 5/164:02 pm
BZN
- ONT
1 stop7h 32m
Delta
Deal found 4/20![Delta logo]()
$268
This Expedia deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
lø. 5/166:00 am
ONT
- MSO
1 stop5h 16m
Alaska Airlines
lø. 5/232:03 pm
MSO
- ONT
1 stop5h 59m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
sø. 5/243:30 pm
ONT
- FCA
1 stop17h 16m
Multiple Airlines
ma. 6/110:36 am
FCA
- ONT
1 stop5h 33m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$226
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
on. 5/276:45 am
ONT
- BZN
1 stop15h 36m
Delta
ma. 6/15:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/22![Delta logo]()
$270
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
fr. 5/296:00 am
ONT
- FCA
1 stop4h 25m
Delta
ma. 6/15:13 am
FCA
- ONT
1 stop4h 40m
Delta
Deal found 4/23![Delta logo]()
$276
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
lø. 5/306:45 am
ONT
- BZN
1 stop7h 32m
Delta
lø. 6/68:00 am
BZN
- ONT
1 stop5h 33m
Delta
Deal found 4/22![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
lø. 5/306:45 am
ONT
- BZN
1 stop7h 32m
Delta
sø. 5/315:35 am
BZN
- ONT
1 stop4h 18m
Delta
Deal found 4/22![Delta logo]()
$244
One-way flights from Ontario to MontanaSearch for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated april 23, 2026.
Search for one-way flight options from Ontario to Montana. Find affordable one-way fares based on user searches. Data last updated april 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
lø. 6/133:34 pm
ONT
- MSO
1 stop17h 01m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$82
This Southwest deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
ti. 6/96:35 pm
ONT
- BZN
1 stop5h 10m
Southwest
Deal found 4/20![Southwest logo]()
$92
This Trip.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
sø. 5/174:04 pm
ONT
- MSO
1 stop27h 00m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
ma. 5/1811:36 am
ONT
- MSO
1 stop7h 28m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$108
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
ma. 6/81:48 pm
ONT
- BZN
1 stop8h 00m
Delta
Deal found 4/21![Delta logo]()
$109
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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.
fr. 6/56:45 am
ONT
- BZN
1 stop7h 30m
Delta
Deal found 4/22![Delta logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
on. 6/34:39 pm
ONT
- BZN
1 stop22h 18m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$131
This SmartFares deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
on. 5/274:03 pm
ONT
- BZN
1 stop5h 39m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
sø. 7/123:40 pm
ONT
- FCA
1 stop17h 00m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$134
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” 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.
to. 6/115:24 pm
ONT
- BZN
1 stop5h 59m
Delta
Deal found 4/20![Delta logo]()
$136
This Delta deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
sø. 7/125:16 pm
ONT
- FCA
1 stop4h 37m
Delta
Deal found 4/19![Delta logo]()
$139
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” 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.
on. 8/191:18 pm
ONT
- BZN
1 stop6h 49m
United Airlines
Deal found 4/21![United Airlines logo]()
$149
Find flight deals from Ontario to Montana
Keep the following information in mind while searching for Ontario to Montana flight deals. Data was last updated april 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $183 (Expedia) |
One-way from | $82 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $326 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Montana that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated april 23, 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
ma. 8/24
9:55 am-2:46 pm
1 stop3h 51m
Bozeman Gallatin Field
ma. 8/31
11:30 am-4:14 pm
1 stop5h 44m
$217
Quickest round-trip
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
ma. 8/10
9:55 am-2:46 pm
1 stop3h 51m
Bozeman Gallatin Field
fr. 8/14
5:45 am-9:01 am
1 stop4h 16m
$260
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
ti. 8/25
7:10 am-1:24 pm
1 stop5h 14m
Bozeman Gallatin Field
ti. 9/8
3:40 pm-8:24 pm
1 stop5h 44m
$295
OntarioKalispell
ONT - FCA
ONTFCA
Ontario
on. 5/27
4:03 pm-11:58 pm
1 stop6h 55m
Kalispell Glacier Park
lø. 5/30
6:15 am-11:10 am
1 stop5h 55m
$298
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
on. 5/27
4:03 pm-11:59 pm
1 stop6h 56m
Missoula Johnson-Bell Field
lø. 5/30
2:03 pm-7:02 pm
1 stop5h 59m
$315
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
fr. 5/15
11:52 am-11:21 pm
1 stop10h 29m
Bozeman Gallatin Field
lø. 5/16
6:35 pm-10:45 pm
1 stop5h 10m
$320
OntarioBozeman
ONT - BZN
ONTBZN
Ontario
on. 8/12
9:55 am-2:46 pm
1 stop3h 51m
Bozeman Gallatin Field
on. 8/12
7:00 pm-11:44 pm
1 stop5h 44m
$322
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
lø. 5/16
5:55 pm-11:16 pm
1 stop4h 21m
Missoula Johnson-Bell Field
lø. 5/23
6:05 pm-10:45 pm
1 stop5h 40m
$329
OntarioBillings
ONT - BIL
ONTBIL
Ontario
lø. 5/30
7:00 am-2:54 pm
1 stop6h 54m
Billings Logan Intl
on. 6/3
7:21 pm-11:58 pm
1 stop5h 37m
$330
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
sø. 5/17
5:00 am-1:35 pm
1 stop7h 35m
Missoula Johnson-Bell Field
lø. 5/23
2:26 pm-8:42 pm
1 stop7h 16m
$339
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Montana
Have a flexible travel schedule? Discover the best time to fly to Montana from Ontario with our price prediction graph.
ONT-BZN
ONT-MSO
ONT-SDY
ONT-FCA
ONT-BIL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Montana
ONT-USMT
ONT-BZN
ONT-MSO
ONT-SDY
ONT-FCA
What is the cheapest month to book a flight from Ontario to Montana?
Currently, July is the cheapest month in which you can book a flight from Ontario to Montana (average of $120). Flying from Ontario to Montana in March is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Montana?
Reviews of airlines servicing Montana
Get insights into the airlines that provide service to Montana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montana. Reviews last updated april 23, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Ontario to Montana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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 april 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Montana flights
Consider these flights traveling from Ontario to Montana.
Top 4 airlines flying from Ontario to Montana
Discover the top 4 airlines that operate flights from Ontario to Montana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated april 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$399 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$184 | Average$403 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$364 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$211 | Average$402 | FlexibilityNo cancel fee | On-time63% |