$71+ Cheap flights from California to Ontario
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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Find cheap flights from California to Ontario with Cheapflights
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Cheapest flights from California to OntarioExplore the most affordable flight options available from California to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
Explore the most affordable flight options available from California to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:10 pm
LAS
- YYZ
2 stops13h 48m
WestJet
Sat 4/1110:00 am
YYZ
- LAS
1 stop11h 13m
WestJet
Deal found 3/5![WestJet logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:10 pm
LAS
- YYZ
2 stops13h 48m
WestJet
Sun 4/58:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:20 am
LAS
- YYZ
1 stop8h 51m
WestJet
Mon 4/207:45 am
YYZ
- LAS
1 stop9h 13m
WestJet
Deal found 3/5![WestJet logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/28:05 am
LAS
- YYZ
1 stop8h 31m
WestJet
Fri 4/103:00 pm
YYZ
- LAS
1 stop9h 33m
WestJet
Deal found 3/5![WestJet logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:05 am
LAS
- YYZ
1 stop8h 31m
WestJet
Sun 4/198:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:05 pm
LAS
- YYZ
1 stop8h 08m
WestJet
Mon 4/68:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/211:25 pm
LAS
- YYZ
Nonstop4h 18m
WestJet
Mon 4/68:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:05 pm
LAS
- YYZ
1 stop8h 08m
Multiple Airlines
Sat 4/187:55 pm
YYZ
- LAS
Nonstop5h 05m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$184
This FlightHub deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/169:45 am
LAS
- YYZ
Nonstop4h 24m
Porter Airlines
Fri 6/198:30 pm
YYZ
- LAS
Nonstop4h 47m
Porter Airlines
Deal found 3/5![Porter Airlines logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:50 am
LAX
- YYZ
1 stop9h 05m
WestJet
Wed 4/221:35 pm
YYZ
- LAX
2 stops11h 28m
WestJet
Deal found 3/5![WestJet logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:39 pm
LAX
- YYZ
2 stops13h 34m
Multiple Airlines
Sat 4/47:55 pm
YYZ
- LAX
1 stop15h 53m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:44 am
ONT
- YYZ
1 stop15h 59m
Multiple Airlines
Mon 4/277:55 pm
YYZ
- ONT
1 stop17h 49m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$258
Best flights from California to OntarioDiscover carefully curated flight deals from California to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
Discover carefully curated flight deals from California to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
This Air Canada deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1711:30 pm
LAS
- YYZ
Nonstop4h 19m
Air Canada
Mon 5/259:10 am
YYZ
- LAS
Nonstop4h 54m
Air Canada
Deal found 3/9![Air Canada logo]()
$255
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:30 am
LAS
- YYZ
1 stop13h 02m
United Airlines
Sat 4/111:00 pm
YYZ
- LAS
1 stop8h 29m
United Airlines
Deal found 3/5![United Airlines logo]()
$261
This FlightHub deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Thu 4/27:05 pm
LAS
- YYZ
1 stop25h 06m
WestJet
Sun 4/57:45 am
YYZ
- LAS
2 stops15h 31m
WestJet
Deal found 3/10![WestJet logo]()
$270
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:45 pm
LAX
- YYZ
1 stop11h 34m
Delta
Wed 6/106:10 pm
YYZ
- LAX
1 stop9h 47m
Delta
Deal found 3/6![Delta logo]()
$357
This Porter Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:45 pm
SFO
- YYZ
Nonstop4h 57m
Porter Airlines
Wed 4/159:50 am
YYZ
- SFO
Nonstop5h 55m
Porter Airlines
Deal found 3/7![Porter Airlines logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:04 pm
LAX
- YYZ
2 stops15h 41m
Alaska Airlines
Tue 4/284:55 pm
YYZ
- LAX
2 stops19h 42m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$435
This Mytrip deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/311:35 pm
LAX
- YTZ
2 stops18h 55m
Multiple Airlines
Thu 5/711:20 am
YTZ
- LAX
1 stop13h 45m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$517
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:30 pm
LAS
- YYZ
1 stop7h 24m
United Airlines
Sun 6/79:44 am
YYZ
- LAS
1 stop15h 35m
United Airlines
Deal found 3/8![United Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:50 am
LAS
- YYZ
1 stop7h 42m
United Airlines
Sun 4/1210:45 am
YYZ
- LAS
1 stop14h 13m
United Airlines
Deal found 3/7![United Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:36 am
LAS
- YYZ
1 stop10h 48m
United Airlines
Sun 4/2610:45 am
YYZ
- LAS
1 stop13h 13m
United Airlines
Deal found 3/6![United Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3010:10 am
LAS
- YYZ
1 stop8h 22m
United Airlines
Sat 5/27:30 am
YYZ
- LAS
2 stops13h 58m
United Airlines
Deal found 3/6![United Airlines logo]()
$276
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:00 pm
SJC
- YYZ
1 stop10h 19m
Delta
Mon 4/2011:30 am
YYZ
- SJC
1 stop13h 15m
Delta
Deal found 3/8![Delta logo]()
$377
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:55 pm
SJC
- YYZ
1 stop11h 35m
Delta
Tue 6/911:30 am
YYZ
- SJC
1 stop10h 19m
Delta
Deal found 3/5![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/211:30 pm
LAS
- YYZ
1 stop7h 24m
United Airlines
Tue 6/161:00 pm
YYZ
- LAS
1 stop7h 58m
United Airlines
Deal found 3/6![United Airlines logo]()
$286
This Air Canada deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:05 am
SFO
- YTZ
1 stop10h 27m
Air Canada
Thu 5/712:30 pm
YTZ
- SFO
1 stop11h 32m
Air Canada
Deal found 3/9![Air Canada logo]()
$444
This Alaska Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:59 pm
SFO
- YYZ
1 stop15h 46m
Alaska Airlines
Wed 4/154:55 pm
YYZ
- SFO
2 stops17h 35m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$446
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:15 am
SJC
- YYZ
1 stop11h 45m
Delta
Mon 6/151:30 pm
YYZ
- SJC
1 stop12h 23m
Delta
Deal found 3/5![Delta logo]()
$377
This Porter Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:45 pm
SFO
- YUL
1 stop7h 50m
Porter Airlines
Thu 4/166:45 am
YUL
- SFO
1 stop9h 00m
Porter Airlines
Deal found 3/8![Porter Airlines logo]()
$457
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:30 pm
LAS
- YYZ
1 stop7h 24m
United Airlines
Tue 6/1610:45 am
YYZ
- LAS
1 stop9h 18m
United Airlines
Deal found 3/6![United Airlines logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:00 am
LAX
- YYZ
1 stop30h 45m
Alaska Airlines
Wed 4/154:55 pm
YYZ
- LAX
1 stop9h 00m
Alaska Airlines
Deal found 3/5![Alaska Airlines logo]()
$446
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:00 pm
SJC
- YYZ
1 stop10h 15m
Delta
Mon 4/2711:30 am
YYZ
- SJC
1 stop13h 15m
Delta
Deal found 3/7![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:59 pm
LAS
- YYZ
1 stop16h 21m
United Airlines
Tue 3/313:53 pm
YYZ
- LAS
1 stop9h 04m
United Airlines
Deal found 3/6![United Airlines logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:00 am
LAX
- YYZ
2 stops26h 45m
Alaska Airlines
Wed 4/154:55 pm
YYZ
- LAX
2 stops19h 53m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$455
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1210:56 pm
SJC
- YYZ
1 stop11h 29m
Delta
Wed 6/1712:30 pm
YYZ
- SJC
1 stop11h 23m
Delta
Deal found 3/5![Delta logo]()
$381
This Air Canada deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:30 am
LAX
- YTZ
2 stops19h 47m
Air Canada
Sun 5/310:20 am
YTZ
- LAX
2 stops28h 04m
Air Canada
Deal found 3/9![Air Canada logo]()
$537
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:00 pm
SJC
- YYZ
1 stop8h 19m
Delta
Mon 5/411:30 am
YYZ
- SJC
1 stop13h 15m
Delta
Deal found 3/6![Delta logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:23 am
SFO
- YYZ
2 stops26h 22m
Alaska Airlines
Wed 4/224:55 pm
YYZ
- SFO
2 stops19h 09m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3110:55 pm
SJC
- YYZ
1 stop7h 04m
Delta
Wed 6/32:20 pm
YYZ
- SJC
2 stops12h 21m
Delta
Deal found 3/5![Delta logo]()
$386
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/912:13 am
LAX
- YYZ
1 stop6h 41m
United Airlines
Thu 6/116:30 am
YYZ
- LAX
1 stop8h 27m
United Airlines
Deal found 3/5![United Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
ONT
- YYZ
1 stop30h 45m
Alaska Airlines
Tue 4/74:55 pm
YYZ
- ONT
1 stop10h 04m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$508
Last-minute flights from California to OntarioDiscover last-minute flight deals from California to Ontario. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from California to Ontario. Data last updated March 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:10 pm
LAS
- YYZ
2 stops13h 48m
WestJet
Sat 4/1110:00 am
YYZ
- LAS
1 stop11h 13m
WestJet
Deal found 3/5![WestJet logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:10 pm
LAS
- YYZ
2 stops13h 48m
WestJet
Sun 4/58:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:05 pm
LAS
- YYZ
1 stop8h 08m
WestJet
Mon 4/68:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:05 pm
LAS
- YYZ
1 stop8h 08m
Multiple Airlines
Sat 4/117:55 pm
YYZ
- LAS
Nonstop5h 05m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:39 pm
LAX
- YYZ
2 stops13h 34m
Multiple Airlines
Sat 4/47:55 pm
YYZ
- LAX
1 stop15h 53m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/28:05 am
LAS
- YYZ
1 stop8h 31m
WestJet
Fri 4/103:00 pm
YYZ
- LAS
1 stop9h 33m
WestJet
Deal found 3/5![WestJet logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/211:25 pm
LAS
- YYZ
Nonstop4h 18m
WestJet
Mon 4/68:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:05 pm
LAS
- YYZ
1 stop8h 08m
Multiple Airlines
Sat 4/187:55 pm
YYZ
- LAS
Nonstop5h 05m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:05 am
LAS
- YYZ
1 stop8h 31m
WestJet
Sun 4/198:00 pm
YYZ
- LAS
Nonstop5h 12m
WestJet
Deal found 3/5![WestJet logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:50 am
LAX
- YYZ
1 stop9h 05m
WestJet
Wed 4/221:35 pm
YYZ
- LAX
2 stops11h 28m
WestJet
Deal found 3/5![WestJet logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:20 am
LAS
- YYZ
1 stop8h 51m
WestJet
Mon 4/207:45 am
YYZ
- LAS
1 stop9h 13m
WestJet
Deal found 3/5![WestJet logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:44 am
ONT
- YYZ
1 stop15h 59m
Multiple Airlines
Mon 4/277:55 pm
YYZ
- ONT
1 stop17h 49m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$258
One-way flights from California to OntarioSearch for one-way flight options from California to Ontario. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
Search for one-way flight options from California to Ontario. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:10 pm
LAS
- YYZ
1 stop8h 35m
WestJet
Deal found 3/5![WestJet logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:25 pm
LAS
- YYZ
Nonstop4h 18m
WestJet
Deal found 3/5![WestJet logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:35 pm
LAS
- YYZ
1 stop9h 35m
WestJet
Deal found 3/5![WestJet logo]()
$73
This Kissandfly.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:30 pm
LAS
- YYZ
Nonstop4h 24m
Porter Airlines
Deal found 3/5![Porter Airlines logo]()
$74
This Trip.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:35 pm
LAS
- YYZ
1 stop9h 35m
WestJet
Deal found 3/5![WestJet logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1011:25 pm
LAS
- YYZ
Nonstop4h 18m
WestJet
Deal found 3/7![WestJet logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:05 am
LAS
- YYZ
1 stop9h 21m
WestJet
Deal found 3/6![WestJet logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:05 am
LAS
- YYZ
1 stop9h 21m
WestJet
Deal found 3/8![WestJet logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:05 am
LAS
- YYZ
1 stop10h 21m
WestJet
Deal found 3/9![WestJet logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:25 pm
LAS
- YYZ
Nonstop4h 18m
WestJet
Deal found 3/6![WestJet logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/211:25 pm
LAS
- YYZ
Nonstop4h 18m
WestJet
Deal found 3/9![WestJet logo]()
$85
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:02 pm
ONT
- YYZ
2 stops30h 11m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$115
Find flight deals from California to Ontario
Keep the following information in mind while searching for California to Ontario flight deals. Data was last updated March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $168 (Kiwi.com) |
One-way from | $71 (Kiwi.com) |
Popular in | December |
Cheapest in | June |
Average price | $393 |
Good round-trip deal | $300 or less |
Good one-way deal | $187 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from California to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
Use the filters below to find and compare flights from California to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Sun 5/17
11:30 pm-6:49 am
Nonstop4h 19m
Toronto Pearson Intl
Mon 5/25
9:10 am-11:04 am
Nonstop4h 54m
$255
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Sat 4/4
5:30 am-9:32 pm
1 stop13h 02m
Toronto Pearson Intl
Sat 4/11
1:00 pm-6:29 pm
1 stop8h 29m
$261
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Thu 6/4
11:30 pm-9:54 am
1 stop7h 24m
Toronto Pearson Intl
Sun 6/7
9:44 am-10:19 pm
1 stop15h 35m
$269
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Thu 4/2
7:05 pm-11:11 pm
1 stop25h 06m
Toronto Pearson Intl
Sun 4/5
7:45 am-8:16 pm
2 stops15h 31m
$270
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Thu 4/9
10:50 am-9:32 pm
1 stop7h 42m
Toronto Pearson Intl
Sun 4/12
10:45 am-9:58 pm
1 stop14h 13m
$271
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Wed 4/22
12:36 am-2:24 pm
1 stop10h 48m
Toronto Pearson Intl
Sun 4/26
10:45 am-8:58 pm
1 stop13h 13m
$271
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Thu 4/30
10:10 am-9:32 pm
1 stop8h 22m
Toronto Pearson Intl
Sat 5/2
7:30 am-6:28 pm
2 stops13h 58m
$276
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Tue 6/2
11:30 pm-9:54 am
1 stop7h 24m
Toronto Pearson Intl
Tue 6/16
1:00 pm-5:58 pm
1 stop7h 58m
$286
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Wed 6/3
11:30 pm-9:54 am
1 stop7h 24m
Toronto Pearson Intl
Tue 6/16
10:45 am-5:03 pm
1 stop9h 18m
$286
Las VegasToronto
LAS - YYZ
LASYYZ
Las Vegas Harry Reid Intl
Fri 3/27
6:59 pm-2:20 pm
1 stop16h 21m
Toronto Pearson Intl
Tue 3/31
3:53 pm-9:57 pm
1 stop9h 04m
$293
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from California to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from California with our price prediction graph.
LAS-YYZ
LAX-YYZ
ONT-YYZ
SFO-YYZ
LAX-YTZ
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 California to Ontario
USCA-CAON
LAS-YYZ
LAX-YYZ
ONT-YYZ
SFO-YYZ
What is the cheapest month to book a flight from California to Region of Ontario?
Currently, June is the cheapest month in which you can book a flight from California to Region of Ontario (average of $76). Flying from California to Region of Ontario in December is currently the most expensive (average of $154). 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 CA to ON?
Find hourly flight availability from California to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.
A simple way to save on the total cost of your ticket is to fly from California to Region of Ontario at noon. If you’re flexible enough to do this you can expect to save up to 48% on your trip compared to booking a flight in the evening.
What is the cheapest day to fly from California to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from California to Ontario. Price data was last updated on February 21, 2026.
Travelers seeking maximum savings on their California to Region of Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from California to Region of Ontario
Explore weekly flight availability from California to Ontario. 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 March 10, 2026.
The most flights from USCA to CAON are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from California to Region of Ontario?
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated March 10, 2026.
Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines from California to Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Comfort
8.0
Entertainment
7.0
Overall
8.0
Crew
8.6
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Comfort
8.0
Entertainment
7.0
Overall
8.0
Crew
8.6
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Comfort
8.0
Entertainment
7.0
Overall
8.0
Crew
8.6
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Comfort
8.0
Entertainment
7.0
Overall
8.0
Crew
8.6
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Comfort
8.0
Entertainment
7.0
Overall
8.0
Crew
8.6
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Comfort
8.0
Entertainment
7.0
Overall
8.0
Crew
8.6
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Related info for your journey
Find useful and relevant information for your journey from California to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for California to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from California to Ontario by cabin class
Find flights from California to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
California and Ontario flights
Browse other California and Ontario flight options. Last updated on March 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Ontario
Find the right flight back to California after your stay in Ontario
California to Ontario flights
Consider these flights traveling from California to Ontario.
Top 7 airlines flying from California to Ontario
Discover the top 7 airlines that operate flights from California to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$304 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$101 | Average$535 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$102 | Average$327 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$114 | Average$354 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$122 | Average$509 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$130 | Average$424 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$256 | Average$544 | FlexibilityNo cancel fee | On-time71% |