$126+ Cheap flights from Ontario to California
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
May 26 — Jun 21
Round-trip
1 adult, Economy
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Cheapest flights from Ontario to CaliforniaExplore the most affordable flight options available from Ontario to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 26, 2026.
Explore the most affordable flight options available from Ontario to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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.
Fri 6/512:40 pm
YYZ
- LAS
2 stops12h 00m
WestJet
Sun 6/145:35 pm
LAS
- YYZ
1 stop9h 35m
WestJet
Deal found 4/25![WestJet logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/17:00 am
YYZ
- LAS
2 stops11h 45m
WestJet
Fri 6/58:30 am
LAS
- YYZ
1 stop9h 45m
WestJet
Deal found 4/25![WestJet logo]()
$199
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.
Fri 6/512:40 pm
YYZ
- LAS
1 stop8h 55m
WestJet
Mon 6/88:30 am
LAS
- YYZ
2 stops12h 29m
WestJet
Deal found 4/21![WestJet logo]()
$201
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Fri 6/126:10 pm
LAS
- YYZ
1 stop9h 45m
WestJet
Deal found 4/21![WestJet logo]()
$202
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.
Fri 6/193:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Wed 6/241:20 pm
LAS
- YYZ
1 stop8h 45m
WestJet
Deal found 4/21![WestJet logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 6/187:00 am
YYZ
- LAS
2 stops12h 35m
WestJet
Mon 6/221:45 pm
LAS
- YYZ
1 stop8h 20m
WestJet
Deal found 4/24![WestJet logo]()
$205
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.
Fri 6/193:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Tue 6/231:45 pm
LAS
- YYZ
1 stop8h 20m
WestJet
Deal found 4/22![WestJet logo]()
$206
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.
Fri 6/193:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Mon 6/2212:35 pm
LAS
- YYZ
Nonstop4h 25m
WestJet
Deal found 4/21![WestJet logo]()
$207
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/69:00 am
YYZ
- LAS
1 stop11h 15m
WestJet
Thu 6/115:35 pm
LAS
- YYZ
1 stop9h 35m
WestJet
Deal found 4/22![WestJet logo]()
$209
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/123:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Tue 6/166:10 pm
LAS
- YYZ
1 stop8h 35m
WestJet
Deal found 4/21![WestJet logo]()
$210
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.
Fri 5/87:15 am
YUL
- LAS
2 stops11h 30m
WestJet
Sat 5/1611:30 am
LAS
- YUL
1 stop9h 15m
WestJet
Deal found 4/22![WestJet logo]()
$266
This Justfly.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:15 am
YUL
- LAS
2 stops11h 30m
WestJet
Tue 9/291:20 pm
LAS
- YUL
2 stops14h 45m
WestJet
Deal found 4/26![WestJet logo]()
$267
Best flights from Ontario to CaliforniaDiscover carefully curated flight deals from Ontario to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 26, 2026.
Discover carefully curated flight deals from Ontario to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 26, 2026.
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/95:15 pm
YYZ
- LAS
1 stop7h 39m
United Airlines
Tue 6/912:36 am
LAS
- YYZ
1 stop6h 18m
United Airlines
Deal found 4/25![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/711:38 am
YYZ
- LAS
1 stop12h 32m
Delta
Thu 6/117:05 am
LAS
- YYZ
1 stop11h 54m
Delta
Deal found 4/25![Delta logo]()
$290
This Porter 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:05 am
YYZ
- LAX
Nonstop5h 15m
Porter Airlines
Fri 10/162:20 pm
LAX
- YYZ
Nonstop4h 40m
Porter Airlines
Deal found 4/22![Porter Airlines logo]()
$378
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.
Thu 5/74:55 pm
YYZ
- ONT
1 stop10h 04m
Alaska Airlines
Tue 5/127:00 am
ONT
- YYZ
2 stops29h 45m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 5/296:10 am
YYZ
- LAS
1 stop16h 47m
United Airlines
Tue 6/212:36 am
LAS
- YYZ
1 stop6h 18m
United Airlines
Deal found 4/25![United Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:18 pm
YYZ
- LAS
1 stop7h 30m
United Airlines
Tue 5/1211:56 am
LAS
- YYZ
1 stop6h 36m
United Airlines
Deal found 4/25![United Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/42:30 pm
YYZ
- LAS
1 stop10h 49m
United Airlines
Tue 6/912:36 am
LAS
- YYZ
1 stop6h 18m
United Airlines
Deal found 4/25![United Airlines logo]()
$265
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.
Fri 6/267:45 am
YYZ
- LAX
1 stop11h 31m
Delta
Tue 6/305:40 am
LAX
- YYZ
1 stop7h 55m
Delta
Deal found 4/23![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/42:30 pm
YYZ
- LAS
1 stop10h 49m
United Airlines
Mon 6/812:36 am
LAS
- YYZ
1 stop6h 18m
United Airlines
Deal found 4/25![United Airlines logo]()
$265
This Porter 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:45 am
YUL
- SFO
1 stop8h 35m
Porter Airlines
Fri 10/301:40 pm
SFO
- YUL
1 stop7h 55m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2212:09 pm
YYZ
- LAX
1 stop8h 56m
Delta
Sun 5/317:00 am
LAX
- YYZ
1 stop11h 55m
Delta
Deal found 4/24![Delta logo]()
$349
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.
Thu 5/75:20 pm
YYZ
- LAS
1 stop9h 39m
United Airlines
Mon 5/1111:22 pm
LAS
- YYZ
1 stop9h 27m
United Airlines
Deal found 4/23![United Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:04 pm
YYZ
- LAX
1 stop7h 37m
Delta
Sun 5/311:20 pm
LAX
- YYZ
1 stop7h 38m
Delta
Deal found 4/25![Delta logo]()
$350
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.
Sat 5/910:45 am
YYZ
- LAS
2 stops10h 14m
United Airlines
Mon 5/117:07 pm
LAS
- YYZ
2 stops11h 57m
United Airlines
Deal found 4/23![United Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/84:18 pm
YYZ
- LAS
1 stop8h 47m
United Airlines
Tue 5/1210:16 am
LAS
- YYZ
1 stop9h 20m
United Airlines
Deal found 4/24![United Airlines logo]()
$268
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.
Thu 7/26:00 am
YUL
- LAS
1 stop10h 37m
Delta
Sun 7/511:27 am
LAS
- YUL
1 stop9h 01m
Delta
Deal found 4/23![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 8/197:00 am
YUL
- LAS
1 stop9h 29m
Delta
Mon 8/2411:30 am
LAS
- YUL
1 stop8h 40m
Delta
Deal found 4/24![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 8/214:55 pm
YUL
- LAS
1 stop7h 32m
Delta
Wed 8/2611:00 am
LAS
- YUL
1 stop9h 56m
Delta
Deal found 4/25![Delta logo]()
$357
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.
Tue 6/1612:15 pm
YTZ
- LAS
1 stop12h 39m
United Airlines
Fri 6/1911:30 pm
LAS
- YTZ
1 stop7h 36m
United Airlines
Deal found 4/21![United Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 8/217:00 am
YUL
- LAS
1 stop9h 29m
Delta
Tue 8/259:40 am
LAS
- YUL
1 stop10h 30m
Delta
Deal found 4/25![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/17:20 pm
YTZ
- LAS
1 stop7h 33m
United Airlines
Mon 6/1511:30 pm
LAS
- YTZ
1 stop7h 36m
United Airlines
Deal found 4/25![United Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 8/217:00 am
YUL
- LAS
1 stop12h 23m
Delta
Fri 8/289:40 am
LAS
- YUL
1 stop10h 30m
Delta
Deal found 4/25![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/301:34 pm
YYZ
- SFO
1 stop8h 31m
Delta
Tue 6/25:50 am
SFO
- YYZ
1 stop8h 31m
Delta
Deal found 4/24![Delta logo]()
$357
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/612:15 pm
YTZ
- LAS
2 stops12h 08m
United Airlines
Wed 6/102:15 pm
LAS
- YTZ
2 stops16h 51m
United Airlines
Deal found 4/22![United Airlines logo]()
$325
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.
Tue 5/192:20 pm
YYZ
- SFO
1 stop11h 01m
Delta
Thu 5/2811:59 pm
SFO
- YYZ
1 stop10h 31m
Delta
Deal found 4/21![Delta logo]()
$357
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.
Fri 6/127:20 pm
YTZ
- LAS
1 stop7h 33m
United Airlines
Mon 6/158:31 pm
LAS
- YTZ
2 stops10h 35m
United Airlines
Deal found 4/23![United Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/192:55 pm
YTZ
- LAS
1 stop10h 24m
United Airlines
Thu 6/2511:30 pm
LAS
- YTZ
1 stop7h 36m
United Airlines
Deal found 4/25![United Airlines logo]()
$325
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.
Mon 6/85:07 pm
YUL
- LAS
1 stop7h 53m
Delta
Tue 6/1610:39 am
LAS
- YUL
1 stop10h 20m
Delta
Deal found 4/21![Delta logo]()
$358
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.
Mon 6/812:48 pm
YUL
- LAS
1 stop11h 22m
Delta
Wed 6/1011:40 am
LAS
- YUL
1 stop9h 19m
Delta
Deal found 4/22![Delta logo]()
$358
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.
Thu 6/412:15 pm
YTZ
- LAS
2 stops11h 06m
United Airlines
Wed 6/1011:30 pm
LAS
- YTZ
1 stop7h 36m
United Airlines
Deal found 4/21![United Airlines logo]()
$326
Last-minute flights from Ontario to CaliforniaDiscover last-minute flight deals from Ontario to California. Data last updated April 26, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to California. Data last updated April 26, 2026 and is based on user searches.
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.
Tue 5/57:00 am
YYZ
- LAS
1 stop8h 55m
WestJet
Thu 5/74:35 pm
LAS
- YYZ
1 stop9h 35m
WestJet
Deal found 4/21![WestJet logo]()
$204
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:50 am
YYZ
- LAS
1 stop9h 25m
WestJet
Fri 5/158:30 am
LAS
- YYZ
1 stop8h 35m
WestJet
Deal found 4/21![WestJet logo]()
$209
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:50 am
YYZ
- LAS
1 stop9h 25m
WestJet
Mon 5/118:30 am
LAS
- YYZ
2 stops12h 29m
WestJet
Deal found 4/21![WestJet logo]()
$213
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.
Wed 5/69:00 am
YYZ
- LAX
1 stop11h 10m
WestJet
Wed 5/137:30 am
LAX
- YYZ
2 stops11h 05m
WestJet
Deal found 4/21![WestJet logo]()
$284
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:15 am
YYZ
- SFO
1 stop8h 45m
WestJet
Sat 5/166:00 am
SFO
- YYZ
2 stops10h 55m
WestJet
Deal found 4/22![WestJet logo]()
$289
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:15 am
YUL
- LAS
2 stops11h 30m
WestJet
Sat 5/166:10 pm
LAS
- YUL
1 stop9h 55m
WestJet
Deal found 4/22![WestJet logo]()
$290
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.
Wed 5/66:15 am
YYZ
- SFO
1 stop8h 45m
WestJet
Tue 5/121:00 pm
SFO
- YYZ
1 stop8h 10m
WestJet
Deal found 4/21![WestJet logo]()
$292
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.
Fri 5/83:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Fri 5/158:30 am
LAS
- YYZ
2 stops12h 29m
WestJet
Deal found 4/21![WestJet logo]()
$201
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.
Fri 5/87:00 am
YYZ
- LAS
2 stops11h 45m
WestJet
Sun 5/1010:05 am
LAS
- YYZ
1 stop10h 54m
WestJet
Deal found 4/21![WestJet logo]()
$214
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.
Fri 5/87:15 am
YUL
- LAS
2 stops11h 30m
WestJet
Sat 5/1611:30 am
LAS
- YUL
1 stop9h 15m
WestJet
Deal found 4/22![WestJet logo]()
$266
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:45 am
YUL
- LAS
2 stops13h 30m
WestJet
Sat 5/166:10 pm
LAS
- YUL
1 stop9h 55m
WestJet
Deal found 4/23![WestJet logo]()
$282
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:10 am
YYZ
- LAS
2 stops14h 05m
WestJet
Sat 5/168:30 am
LAS
- YYZ
2 stops12h 29m
WestJet
Deal found 4/23![WestJet logo]()
$208
One-way flights from Ontario to CaliforniaSearch for one-way flight options from Ontario to California. Find affordable one-way fares based on user searches. Data last updated April 26, 2026.
Search for one-way flight options from Ontario to California. Find affordable one-way fares based on user searches. Data last updated April 26, 2026.
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.
Wed 5/66:15 am
YYZ
- LAS
2 stops12h 30m
WestJet
Deal found 4/21![WestJet logo]()
$126
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.
Sat 10/31:30 pm
YYZ
- LAS
1 stop11h 10m
WestJet
Deal found 4/20![WestJet logo]()
$127
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.
Thu 5/73:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Deal found 4/21![WestJet logo]()
$128
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/169:00 am
YYZ
- LAS
1 stop11h 15m
WestJet
Deal found 4/22![WestJet logo]()
$129
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.
Fri 5/87:00 am
YYZ
- LAS
2 stops11h 45m
WestJet
Deal found 4/21![WestJet logo]()
$130
This Cheapflightsfares deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/193:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Deal found 4/24![WestJet logo]()
$131
This Trip.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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.
Tue 6/96:15 am
YYZ
- LAS
1 stop9h 40m
WestJet
Deal found 4/25![WestJet logo]()
$133
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/179:00 am
YYZ
- LAS
1 stop11h 15m
WestJet
Deal found 4/24![WestJet logo]()
$135
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:10 am
YYZ
- LAS
2 stops13h 25m
WestJet
Deal found 4/21![WestJet logo]()
$136
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/64:30 pm
YTZ
- LAS
1 stop9h 00m
Air Canada
Deal found 4/22![Air Canada logo]()
$153
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:15 am
YUL
- LAS
2 stops12h 20m
WestJet
Deal found 4/22![WestJet logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 6/106:15 am
YYZ
- ONT
3 stops16h 36m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$166
Find flight deals from Ontario to California
Keep the following information in mind while searching for Ontario to California flight deals. Data was last updated April 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $198 (Kiwi.com) |
One-way from | $126 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $367 |
Good round-trip deal | $339 or less |
Good one-way deal | $176 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to California 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 26, 2026.
Use the filters below to find and compare flights from Ontario to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Tue 6/9
5:15 pm-9:54 pm
1 stop7h 39m
Las Vegas Harry Reid Intl
Tue 6/9
12:36 am-9:54 am
1 stop6h 18m
$259
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Fri 5/29
6:10 am-7:57 pm
1 stop16h 47m
Las Vegas Harry Reid Intl
Tue 6/2
12:36 am-9:54 am
1 stop6h 18m
$260
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Sat 5/9
4:18 pm-8:48 pm
1 stop7h 30m
Las Vegas Harry Reid Intl
Tue 5/12
11:56 am-9:32 pm
1 stop6h 36m
$262
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Thu 6/4
2:30 pm-10:19 pm
1 stop10h 49m
Las Vegas Harry Reid Intl
Tue 6/9
12:36 am-9:54 am
1 stop6h 18m
$265
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Thu 6/4
2:30 pm-10:19 pm
1 stop10h 49m
Las Vegas Harry Reid Intl
Mon 6/8
12:36 am-9:54 am
1 stop6h 18m
$265
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Thu 5/7
5:20 pm-11:59 pm
1 stop9h 39m
Las Vegas Harry Reid Intl
Mon 5/11
11:22 pm-11:49 am
1 stop9h 27m
$268
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Sat 5/9
10:45 am-5:59 pm
2 stops10h 14m
Las Vegas Harry Reid Intl
Mon 5/11
7:07 pm-10:04 am
2 stops11h 57m
$268
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Fri 5/8
4:18 pm-10:05 pm
1 stop8h 47m
Las Vegas Harry Reid Intl
Tue 5/12
10:16 am-10:36 pm
1 stop9h 20m
$268
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Sun 6/7
11:38 am-9:10 pm
1 stop12h 32m
Las Vegas Harry Reid Intl
Thu 6/11
7:05 am-9:59 pm
1 stop11h 54m
$290
TorontoLas Vegas
YTZ - LAS
YTZLAS
Toronto Island
Tue 6/16
12:15 pm-9:54 pm
1 stop12h 39m
Las Vegas Harry Reid Intl
Fri 6/19
11:30 pm-10:06 am
1 stop7h 36m
$323
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to California
Have a flexible travel schedule? Discover the best time to fly to California from Ontario with our price prediction graph.
YYZ-LAS
YYZ-LAX
YUL-SFO
YTZ-LAX
YUL-LAS
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 California
CAON-USCA
YYZ-LAS
YYZ-LAX
YUL-SFO
YTZ-LAX
How far ahead should I book a flight from Region of Ontario to California?
Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Region of Ontario to California. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Region of Ontario to California?
Currently, September is the cheapest month in which you can book a flight from Region of Ontario to California (average of $326). Flying from Region of Ontario to California in December is currently the most expensive (average of $452). 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.
What is the cheapest time of day to fly from ON to CA?
Find hourly flight availability from Ontario to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 26, 2026.
When flying from Region of Ontario to California, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 42% versus a flight in the afternoon.
What is the cheapest day to fly from Region of Ontario to California?
Use this chart to determine the cheapest time to fly round-trip from Ontario to California. Price data was last updated on April 25, 2026.
Travelers seeking maximum savings on their Region of Ontario to California flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Region of Ontario to California
Explore weekly flight availability from Ontario to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 26, 2026.
The most flights from CAON to USCA are scheduled on a Monday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).
How much does it cost to fly round-trip from Region of Ontario to California?
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. 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 California. Reviews last updated April 26, 2026.
Read through reviews of airlines operating flights from Ontario to California, such as Porter Airlines,Delta, andUnited Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.6
Boarding
8.2
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Boarding
8.2
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Boarding
8.2
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Boarding
8.2
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Boarding
8.2
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Boarding
8.2
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Related info for your journey
Find useful and relevant information for your journey from Ontario to California. 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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Alternative routes for Ontario to California
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to California by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to California by cabin class
Find flights from Ontario to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and California flights
Browse other Ontario and California flight options. Last updated on April 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from California
Find the right flight back to Ontario after your stay in California
Ontario to California flights
Consider these flights traveling from Ontario to California.
Top 7 airlines flying from Ontario to California
Discover the top 7 airlines that operate flights from Ontario to California. 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 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$513 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$116 | Average$295 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$130 | Average$392 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$142 | Average$495 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$171 | Average$435 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$182 | Average$436 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$297 | Average$476 | FlexibilityNo cancel fee | On-time71% |