$149+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
Jun 17 — Jun 241
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to California with Cheapflights
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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 May 18, 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 May 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 9/58:30 pm
YYZ
- LAS
Nonstop4h 47m
Porter Airlines
Thu 9/1711:15 pm
LAS
- YYZ
Nonstop4h 24m
Porter Airlines
Deal found 5/15![Porter Airlines logo]()
$226
This Cheapflightsfares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Mon 10/267:55 pm
YYZ
- LAS
Nonstop5h 07m
Porter Airlines
Fri 10/3011:05 pm
LAS
- YYZ
Nonstop4h 15m
Porter Airlines
Deal found 5/13![Porter Airlines logo]()
$227
This Air Canada deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 10/178:35 pm
YYZ
- LAS
Nonstop4h 47m
Air Canada
Mon 10/1911:30 pm
LAS
- YYZ
Nonstop4h 23m
Air Canada
Deal found 5/15![Air Canada logo]()
$233
This Super.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:10 am
YYZ
- LAS
2 stops14h 05m
WestJet
Mon 10/191:20 pm
LAS
- YYZ
2 stops13h 25m
WestJet
Deal found 5/16![WestJet logo]()
$234
This Super.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:50 pm
YYZ
- LAS
1 stop9h 50m
WestJet
Thu 9/108:30 am
LAS
- YYZ
1 stop9h 45m
WestJet
Deal found 5/13![WestJet logo]()
$235
This Cheapflightsfares deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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.
Sun 9/63:50 pm
YYZ
- LAS
1 stop8h 50m
WestJet
Fri 9/118:30 am
LAS
- YYZ
1 stop8h 35m
WestJet
Deal found 5/14![WestJet logo]()
$237
This Super.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:00 am
YYZ
- LAS
1 stop11h 15m
WestJet
Sun 9/206:10 pm
LAS
- YYZ
1 stop8h 35m
WestJet
Deal found 5/15![WestJet logo]()
$238
This Justfly.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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.
Sat 10/38:00 am
YYZ
- LAS
2 stops12h 15m
WestJet
Sat 10/1011:30 am
LAS
- YYZ
2 stops14h 40m
WestJet
Deal found 5/17![WestJet logo]()
$239
This Justfly.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 9/206:00 am
YYZ
- LAS
2 stops13h 35m
WestJet
Tue 9/291:45 pm
LAS
- YYZ
2 stops12h 25m
WestJet
Deal found 5/13![WestJet logo]()
$240
This Air Canada deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 9/54:30 pm
YTZ
- LAS
1 stop8h 54m
Air Canada
Wed 9/911:25 pm
LAS
- YTZ
1 stop7h 40m
Air Canada
Deal found 5/13![Air Canada logo]()
$256
This oojo deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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.
Sun 9/66:00 am
YYZ
- SAN
1 stop11h 10m
WestJet
Sat 9/123:30 pm
SAN
- YYZ
1 stop11h 15m
WestJet
Deal found 5/17![WestJet logo]()
$281
This oojo deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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.
Sat 9/126:10 am
YYZ
- SAN
2 stops11h 00m
WestJet
Wed 9/163:30 pm
SAN
- YYZ
1 stop11h 15m
WestJet
Deal found 5/14![WestJet logo]()
$283
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 May 18, 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 May 18, 2026.
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/512:45 pm
YYZ
- LAS
1 stop12h 34m
United Airlines
Mon 6/811:45 pm
LAS
- YYZ
1 stop8h 58m
United Airlines
Deal found 5/17![United Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 6/26:10 am
YYZ
- LAS
1 stop10h 27m
Delta
Sat 6/69:30 am
LAS
- YYZ
1 stop10h 44m
Delta
Deal found 5/14![Delta logo]()
$295
This Porter Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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.
Sat 10/2411:05 am
YYZ
- LAX
Nonstop5h 15m
Porter Airlines
Sun 11/11:40 pm
LAX
- YYZ
Nonstop4h 40m
Porter Airlines
Deal found 5/17![Porter Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 6/277:30 pm
YYZ
- LAS
1 stop16h 24m
United Airlines
Mon 6/297:03 pm
LAS
- YYZ
1 stop11h 51m
United Airlines
Deal found 5/13![United Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 6/911:38 am
YYZ
- LAS
1 stop12h 32m
Delta
Fri 6/1210:00 pm
LAS
- YYZ
1 stop11h 25m
Delta
Deal found 5/16![Delta logo]()
$310
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 5/294:18 pm
YYZ
- LAS
2 stops11h 03m
United Airlines
Thu 6/45:13 pm
LAS
- YYZ
1 stop10h 47m
United Airlines
Deal found 5/14![United Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 6/106:15 am
YYZ
- LAS
1 stop11h 11m
Delta
Fri 6/1210:00 pm
LAS
- YYZ
1 stop11h 25m
Delta
Deal found 5/16![Delta logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 10/314:55 pm
YYZ
- ONT
1 stop9h 47m
Alaska Airlines
Sun 11/810:37 am
ONT
- YYZ
2 stops25h 58m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$684
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 6/86:10 am
YYZ
- LAS
1 stop18h 13m
United Airlines
Fri 6/1211:45 pm
LAS
- YYZ
1 stop8h 58m
United Airlines
Deal found 5/16![United Airlines logo]()
$329
This Porter Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Sun 10/256:45 am
YUL
- LAX
1 stop8h 51m
Porter Airlines
Wed 12/21:40 pm
LAX
- YUL
1 stop7h 55m
Porter Airlines
Deal found 5/13![Porter Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 6/102:45 pm
YYZ
- LAS
1 stop6h 48m
United Airlines
Tue 6/1611:59 pm
LAS
- YYZ
1 stop6h 55m
United Airlines
Deal found 5/16![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 5/295:45 pm
YYZ
- SFO
1 stop6h 45m
Delta
Tue 6/211:59 pm
SFO
- YYZ
1 stop10h 31m
Delta
Deal found 5/15![Delta logo]()
$364
This Porter Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Mon 10/266:45 am
YUL
- LAX
1 stop8h 51m
Porter Airlines
Thu 12/31:40 pm
LAX
- YUL
1 stop7h 55m
Porter Airlines
Deal found 5/13![Porter Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/911:00 am
YYZ
- LAS
2 stops9h 03m
United Airlines
Fri 6/127:03 pm
LAS
- YYZ
1 stop11h 51m
United Airlines
Deal found 5/17![United Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/46:15 am
YYZ
- LAX
1 stop8h 54m
Delta
Fri 6/129:45 pm
LAX
- YYZ
1 stop11h 40m
Delta
Deal found 5/15![Delta logo]()
$379
This Porter Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 10/286:45 am
YUL
- LAX
1 stop8h 51m
Porter Airlines
Tue 12/11:40 pm
LAX
- YUL
1 stop7h 55m
Porter Airlines
Deal found 5/13![Porter Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/56:30 am
YYZ
- LAX
1 stop11h 30m
Delta
Fri 6/129:45 pm
LAX
- YYZ
1 stop11h 40m
Delta
Deal found 5/15![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 6/52:55 pm
YTZ
- LAS
1 stop10h 24m
United Airlines
Sat 6/612:36 am
LAS
- YTZ
1 stop6h 30m
United Airlines
Deal found 5/16![United Airlines logo]()
$354
This Porter Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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.
Sat 6/66:45 am
YUL
- SFO
1 stop8h 35m
Porter Airlines
Wed 7/221:20 pm
SFO
- YUL
1 stop8h 17m
Porter Airlines
Deal found 5/17![Porter Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 9/107:12 pm
YYZ
- LAX
1 stop7h 09m
Delta
Tue 9/151:35 pm
LAX
- YYZ
1 stop6h 23m
Delta
Deal found 5/17![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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
1 stop8h 42m
United Airlines
Tue 6/911:59 pm
LAS
- YTZ
1 stop7h 07m
United Airlines
Deal found 5/17![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 10/237:12 pm
YYZ
- LAX
1 stop7h 13m
Delta
Fri 10/3011:45 pm
LAX
- YYZ
1 stop8h 53m
Delta
Deal found 5/17![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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
1 stop8h 42m
United Airlines
Sat 6/612:36 am
LAS
- YTZ
1 stop6h 30m
United Airlines
Deal found 5/16![United Airlines logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 8/266:46 am
YYZ
- ONT
2 stops15h 17m
Alaska Airlines
Sun 8/307:12 am
ONT
- YYZ
2 stops12h 42m
Alaska Airlines
Deal found 5/17![Alaska Airlines logo]()
$703
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:12 pm
YYZ
- LAX
1 stop7h 09m
Delta
Tue 9/151:35 pm
LAX
- YYZ
1 stop6h 23m
Delta
Deal found 5/17![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 stop9h 18m
United Airlines
Tue 6/2311:59 pm
LAS
- YTZ
1 stop7h 07m
United Airlines
Deal found 5/17![United Airlines logo]()
$354
This Porter Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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.
Fri 6/56:45 am
YUL
- SFO
1 stop8h 35m
Porter Airlines
Fri 7/241:20 pm
SFO
- YUL
1 stop8h 17m
Porter Airlines
Deal found 5/17![Porter Airlines logo]()
$532
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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
1 stop8h 42m
United Airlines
Mon 6/811:59 pm
LAS
- YTZ
1 stop7h 07m
United Airlines
Deal found 5/17![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/97:24 pm
YYZ
- LAX
1 stop7h 30m
Delta
Tue 6/169:45 pm
LAX
- YYZ
1 stop11h 40m
Delta
Deal found 5/17![Delta logo]()
$401
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 stop16h 59m
United Airlines
Wed 6/37:00 am
LAS
- YTZ
1 stop6h 41m
United Airlines
Deal found 5/16![United Airlines logo]()
$354
Last-minute flights from Ontario to CaliforniaDiscover last-minute flight deals from Ontario to California. Data last updated May 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to California. Data last updated May 18, 2026 and is based on user searches.
This deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/299:45 am
YYZ
- LAS
Nonstop4h 55m
WestJet
Fri 6/57:25 pm
LAS
- YYZ
1 stop11h 20m
WestJet
Deal found 5/13![WestJet logo]()
$283
This deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3112:40 pm
YYZ
- LAS
1 stop8h 55m
WestJet
Fri 6/57:25 pm
LAS
- YYZ
1 stop11h 20m
WestJet
Deal found 5/13![WestJet logo]()
$264
This Super.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/79:55 am
YYZ
- LAS
Nonstop4h 47m
Porter Airlines
Sun 6/1411:15 pm
LAS
- YYZ
Nonstop4h 24m
Porter Airlines
Deal found 5/13![Porter Airlines logo]()
$284
This Air Canada deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Tue 6/168:35 pm
YYZ
- LAS
Nonstop4h 54m
Air Canada
Tue 6/2311:25 pm
LAS
- YYZ
Nonstop4h 16m
Air Canada
Deal found 5/13![Air Canada logo]()
$281
This Cheapflightsfares deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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.
Thu 6/1810:00 am
YYZ
- LAS
1 stop9h 35m
WestJet
Mon 6/226:10 pm
LAS
- YYZ
1 stop8h 35m
WestJet
Deal found 5/15![WestJet logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/1810:00 am
YYZ
- LAS
1 stop9h 35m
WestJet
Tue 6/231:20 pm
LAS
- YYZ
1 stop8h 45m
WestJet
Deal found 5/15![WestJet logo]()
$275
This oojo deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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.
Thu 6/1810:00 am
YYZ
- LAS
1 stop9h 35m
WestJet
Sun 6/215:35 pm
LAS
- YYZ
2 stops24h 35m
WestJet
Deal found 5/15![WestJet logo]()
$280
This Air Canada deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 6/208:35 pm
YYZ
- LAS
Nonstop4h 49m
Air Canada
Tue 6/2311:25 pm
LAS
- YYZ
Nonstop4h 16m
Air Canada
Deal found 5/13![Air Canada logo]()
$274
This Justfly.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 6/2110:50 am
YYZ
- LAS
1 stop9h 25m
WestJet
Wed 6/241:20 pm
LAS
- YYZ
1 stop8h 45m
WestJet
Deal found 5/14![WestJet logo]()
$276
This oojo deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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.
Mon 6/223:50 pm
YYZ
- SFO
1 stop9h 05m
WestJet
Mon 6/296:00 am
SFO
- YYZ
2 stops12h 35m
WestJet
Deal found 5/15![WestJet logo]()
$297
This oojo deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/2410:00 am
YYZ
- SFO
1 stop9h 40m
WestJet
Tue 8/111:00 pm
SFO
- YYZ
1 stop9h 05m
WestJet
Deal found 5/17![WestJet logo]()
$299
This Justfly.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/2410:00 am
YYZ
- SFO
1 stop9h 40m
WestJet
Wed 7/86:00 am
SFO
- YYZ
1 stop9h 55m
WestJet
Deal found 5/17![WestJet logo]()
$300
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 May 18, 2026.
Search for one-way flight options from Ontario to California. Find affordable one-way fares based on user searches. Data last updated May 18, 2026.
This Super.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:30 pm
YYZ
- LAS
Nonstop4h 47m
Porter Airlines
Deal found 5/16![Porter Airlines logo]()
$149
This SmartFares deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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.
Fri 6/128:30 pm
YYZ
- LAS
Nonstop4h 47m
Air Transat
Deal found 5/14![Air Transat logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 5/291:45 pm
YYZ
- LAS
Nonstop4h 47m
Porter Airlines
Deal found 5/14![Porter Airlines logo]()
$154
This Cheapflightsfares deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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.
Sun 6/2110:50 am
YYZ
- LAS
1 stop9h 25m
WestJet
Deal found 5/15![WestJet logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/236:00 am
YYZ
- LAS
1 stop9h 55m
WestJet
Deal found 5/15![WestJet logo]()
$158
This oojo deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/38:00 am
YYZ
- LAS
2 stops12h 15m
WestJet
Deal found 5/15![WestJet logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/1810:00 am
YYZ
- LAS
1 stop9h 35m
WestJet
Deal found 5/15![WestJet logo]()
$167
This SmartFares deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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.
Sat 7/257:00 am
YYZ
- LAS
Nonstop4h 47m
Air Transat
Deal found 5/15![Air Transat logo]()
$168
This Super.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/183:50 pm
YYZ
- SFO
1 stop9h 05m
WestJet
Deal found 5/17![WestJet logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 6/612:40 pm
YYZ
- SFO
2 stops12h 15m
WestJet
Deal found 5/13![WestJet logo]()
$181
This SmartFares deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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.
Thu 6/1112:40 pm
YYZ
- SFO
2 stops12h 15m
WestJet
Deal found 5/17![WestJet logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 6/1210:00 am
YYZ
- SFO
1 stop9h 40m
WestJet
Deal found 5/14![WestJet logo]()
$183
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 May 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $226 (Kiwi.com) |
One-way from | $149 (Super.com) |
Popular in | May |
Cheapest in | September |
Average price | $409 |
Good round-trip deal | $390 or less |
Good one-way deal | $246 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 May 18, 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
Fri 6/5
12:45 pm-10:19 pm
1 stop12h 34m
Las Vegas Harry Reid Intl
Mon 6/8
11:45 pm-11:43 am
1 stop8h 58m
$290
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Tue 6/2
6:10 am-1:37 pm
1 stop10h 27m
Las Vegas Harry Reid Intl
Sat 6/6
9:30 am-11:14 pm
1 stop10h 44m
$295
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Sat 6/27
7:30 pm-8:54 am
1 stop16h 24m
Las Vegas Harry Reid Intl
Mon 6/29
7:03 pm-9:54 am
1 stop11h 51m
$295
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Fri 5/29
4:18 pm-12:21 am
2 stops11h 03m
Las Vegas Harry Reid Intl
Thu 6/4
5:13 pm-7:00 am
1 stop10h 47m
$301
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Tue 6/9
11:38 am-9:10 pm
1 stop12h 32m
Las Vegas Harry Reid Intl
Fri 6/12
10:00 pm-12:25 pm
1 stop11h 25m
$310
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Wed 6/10
6:15 am-2:26 pm
1 stop11h 11m
Las Vegas Harry Reid Intl
Fri 6/12
10:00 pm-12:25 pm
1 stop11h 25m
$310
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Mon 6/8
6:10 am-9:23 pm
1 stop18h 13m
Las Vegas Harry Reid Intl
Fri 6/12
11:45 pm-11:43 am
1 stop8h 58m
$329
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Wed 6/10
2:45 pm-6:33 pm
1 stop6h 48m
Las Vegas Harry Reid Intl
Tue 6/16
11:59 pm-9:54 am
1 stop6h 55m
$329
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Tue 6/9
11:00 am-5:03 pm
2 stops9h 03m
Las Vegas Harry Reid Intl
Fri 6/12
7:03 pm-9:54 am
1 stop11h 51m
$330
TorontoLas Vegas
YTZ - LAS
YTZLAS
Toronto Island
Fri 6/5
2:55 pm-10:19 pm
1 stop10h 24m
Las Vegas Harry Reid Intl
Sat 6/6
12:36 am-10:06 am
1 stop6h 30m
$354
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
YYZ-ONT
YUL-LAX
YYZ-SFO
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
YYZ-ONT
YUL-LAX
How far ahead should I book a flight from Region of Ontario to California?
Booking 64 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, October is the cheapest month in which you can book a flight from Region of Ontario to California (average of $336). Flying from Region of Ontario to California in December is currently the most expensive (average of $455). 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 May 18, 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 41% 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 May 16, 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 May 18, 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 (16 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 May 18, 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.
Comfort
8.0
Food
7.6
Crew
8.6
Boarding
8.2
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Food
7.6
Crew
8.6
Boarding
8.2
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Food
7.6
Crew
8.6
Boarding
8.2
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Food
7.6
Crew
8.6
Boarding
8.2
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Food
7.6
Crew
8.6
Boarding
8.2
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Food
7.6
Crew
8.6
Boarding
8.2
Entertainment
7.0
Overall
8.0
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 May 18, 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 May 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$498 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$116 | Average$288 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$142 | Average$496 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$147 | Average$410 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$171 | Average$439 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$182 | Average$436 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$297 | Average$458 | FlexibilityNo cancel fee | On-time71% |