$150+ Cheap flights from California to Ontario
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
Nov 21 — Nov 281
Round-trip
1 adult, Economy
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Find cheap flights from California to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from California to Ontario
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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 October 22, 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 October 22, 2026.
This Flightnetwork deal was found by Cheapflights users on 10/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/62:00 pm -
Nonstop4h 49m
Sun 12/139:50 am -
Nonstop5h 57m
Deal found 10/22![Multiple Airlines logo]()
$273
This Flightnetwork deal was found by Cheapflights users on 10/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am -
1 stop10h 27m
Wed 11/189:50 am -
Nonstop5h 54m
Deal found 10/22![Multiple Airlines logo]()
$274
This Flightnetwork deal was found by Cheapflights users on 10/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:40 pm -
Nonstop4h 49m
Wed 11/186:40 pm -
Nonstop5h 50m
Deal found 10/22![Air Canada logo]()
$276
This Air Canada deal was found by Cheapflights users on 10/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:25 am -
Nonstop4h 49m
Fri 12/116:40 pm -
Nonstop5h 50m
Deal found 10/21![Air Canada logo]()
$277
This Super.com deal was found by Cheapflights users on 10/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:45 pm -
Nonstop4h 58m
Wed 11/189:50 am -
Nonstop5h 54m
Deal found 10/22![Porter Airlines logo]()
$278
This Super.com deal was found by Cheapflights users on 10/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:45 pm -
Nonstop4h 58m
Wed 11/119:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$280
This Flightnetwork deal was found by Cheapflights users on 10/21. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:25 am -
1 stop10h 32m
Sat 12/121:00 pm -
1 stop11h 33m
Deal found 10/21![Air Canada logo]()
$282
This FlightHub deal was found by Cheapflights users on 10/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:45 pm -
Nonstop4h 57m
Mon 12/149:50 am -
Nonstop5h 57m
Deal found 10/20![Porter Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/101:45 pm -
Nonstop4h 58m
Fri 11/209:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/111:45 pm -
Nonstop4h 58m
Tue 11/179:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/101:45 pm -
Nonstop4h 58m
Thu 11/199:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 12/31:45 pm -
Nonstop4h 57m
Fri 12/118:30 pm -
1 stop17h 56m
Deal found 10/21![Multiple Airlines logo]()
$287
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 October 22, 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 October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 11/2210:45 pm -
1 stop8h 02m
Sat 12/126:30 am -
Nonstop5h 59m
Deal found 10/21![United Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Fri 12/49:35 pm -
2 stops45h 07m
Fri 12/1111:30 am -
1 stop12h 15m
Deal found 10/20![Multiple Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 10/17. 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.
Wed 10/281:34 pm -
1 stop6h 41m
Mon 11/211:38 am -
1 stop12h 47m
Deal found 10/17![Delta logo]()
$442
This Trip.com deal was found by Cheapflights users on 10/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:35 pm -
1 stop8h 02m
Sat 11/217:00 am -
1 stop8h 32m
Deal found 10/17![Porter Airlines logo]()
$492
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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.
Mon 11/98:33 am -
1 stop28h 32m
Sat 11/145:15 pm -
2 stops17h 12m
Deal found 10/17![Alaska Airlines logo]()
$495
This American Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:49 am -
1 stop7h 26m
Wed 11/116:10 am -
1 stop10h 47m
Deal found 10/18![American Airlines logo]()
$539
This Air Transat deal was found by Cheapflights users on 10/21. 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 Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:45 pm -
1 stop7h 52m
Sun 11/157:00 am -
1 stop8h 44m
Deal found 10/21![Air Transat logo]()
$594
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:29 pm -
Nonstop5h 01m
Wed 11/46:30 am -
Nonstop5h 59m
Deal found 10/19![United Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 10/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:22 pm -
2 stops26h 18m
Tue 12/87:00 am -
1 stop8h 31m
Deal found 10/17![Multiple Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 10/17. 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 11/512:57 pm -
1 stop8h 02m
Thu 11/1212:20 pm -
1 stop12h 52m
Deal found 10/17![Delta logo]()
$442
This United Airlines deal was found by Cheapflights users on 10/17. 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 12/511:29 pm -
Nonstop5h 01m
Tue 12/85:10 pm -
Nonstop5h 53m
Deal found 10/17![United Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:57 pm -
1 stop8h 02m
Tue 11/106:30 am -
1 stop8h 01m
Deal found 10/19![Delta logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 12/242:33 pm -
2 stops13h 19m
Sat 1/98:30 pm -
1 stop14h 51m
Deal found 10/21![Multiple Airlines logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:46 pm -
2 stops20h 19m
Mon 11/95:15 pm -
2 stops17h 12m
Deal found 10/20![Alaska Airlines logo]()
$507
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/84:10 pm -
2 stops18h 53m
Wed 12/94:10 pm -
1 stop7h 43m
Deal found 10/21![United Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:57 pm -
1 stop8h 02m
Mon 11/211:38 am -
1 stop12h 47m
Deal found 10/18![Delta logo]()
$442
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:11 am -
1 stop10h 35m
Sat 11/211:16 pm -
1 stop13h 31m
Deal found 10/21![American Airlines logo]()
$544
This Porter Airlines deal was found by Cheapflights users on 10/17. 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.
Tue 12/11:35 pm -
Nonstop4h 45m
Sat 12/59:55 am -
Nonstop5h 36m
Deal found 10/17![Porter Airlines logo]()
$546
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 12/19:04 pm -
2 stops16h 01m
Wed 12/95:15 pm -
2 stops18h 17m
Deal found 10/21![Alaska Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 10/302:14 pm -
1 stop6h 45m
Mon 11/96:45 am -
1 stop8h 17m
Deal found 10/21![United Airlines logo]()
$432
This Delta deal was found by Cheapflights users on 10/17. 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.
Wed 10/286:30 am -
1 stop7h 48m
Sun 11/111:38 am -
1 stop12h 47m
Deal found 10/17![Delta logo]()
$442
This Air Transat deal was found by Cheapflights users on 10/21. 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 Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:45 pm -
1 stop7h 52m
Sun 11/157:00 am -
1 stop8h 44m
Deal found 10/21![Air Transat logo]()
$594
This Porter Airlines deal was found by Cheapflights users on 10/20. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/51:45 pm -
1 stop7h 56m
Tue 12/87:00 am -
1 stop8h 47m
Deal found 10/20![Porter Airlines logo]()
$549
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/208:36 am -
2 stops19h 15m
Sun 11/228:30 pm -
1 stop14h 11m
Deal found 10/21![Multiple Airlines logo]()
$507
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 11/182:47 pm -
2 stops22h 18m
Mon 3/15:15 pm -
1 stop9h 44m
Deal found 10/21![Alaska Airlines logo]()
$515
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/66:45 pm -
2 stops15h 26m
Sun 12/134:36 pm -
1 stop9h 23m
Deal found 10/21![United Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/206:00 am -
1 stop7h 04m
Wed 1/2712:15 pm -
1 stop9h 33m
Deal found 10/19![Delta logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/1111:31 am -
2 stops21h 29m
Mon 11/168:30 pm -
1 stop23h 54m
Deal found 10/21![Multiple Airlines logo]()
$514
This Air Transat deal was found by Cheapflights users on 10/20. 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 Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:35 pm -
1 stop8h 15m
Sun 11/87:00 am -
1 stop8h 32m
Deal found 10/20![Air Transat logo]()
$628
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 10/304:10 pm -
2 stops14h 37m
Wed 11/46:45 am -
1 stop8h 17m
Deal found 10/21![United Airlines logo]()
$442
Last-minute flights from California to OntarioDiscover last-minute flight deals from California to Ontario. Data last updated October 22, 2026 and is based on user searches.
Discover last-minute flight deals from California to Ontario. Data last updated October 22, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 10/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:45 pm -
Nonstop4h 58m
Wed 11/119:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/101:45 pm -
Nonstop4h 58m
Fri 11/209:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/101:45 pm -
Nonstop4h 58m
Wed 11/189:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/101:45 pm -
Nonstop4h 58m
Tue 11/179:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/111:45 pm -
Nonstop4h 58m
Tue 11/179:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/111:45 pm -
Nonstop4h 58m
Fri 11/209:50 am -
Nonstop5h 54m
Deal found 10/21![Porter Airlines logo]()
$288
This Flightnetwork deal was found by Cheapflights users on 10/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am -
1 stop10h 27m
Wed 11/189:50 am -
Nonstop5h 54m
Deal found 10/22![Multiple Airlines logo]()
$274
This Flightnetwork deal was found by Cheapflights users on 10/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:40 pm -
Nonstop4h 49m
Wed 11/186:40 pm -
Nonstop5h 50m
Deal found 10/22![Air Canada logo]()
$276
This Air Canada deal was found by Cheapflights users on 10/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:25 am -
Nonstop4h 49m
Tue 11/246:40 pm -
Nonstop5h 50m
Deal found 10/21![Air Canada logo]()
$277
This Super.com deal was found by Cheapflights users on 10/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:45 pm -
Nonstop4h 58m
Wed 11/189:50 am -
Nonstop5h 54m
Deal found 10/22![Porter Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Sat 11/141:45 pm -
Nonstop4h 58m
Sat 2/279:50 am -
Nonstop5h 55m
Deal found 10/21![Porter Airlines logo]()
$289
This Super.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:35 pm -
Nonstop4h 43m
Wed 11/259:55 am -
Nonstop5h 37m
Deal found 10/19![Porter Airlines logo]()
$288
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 October 22, 2026.
Search for one-way flight options from California to Ontario. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Sat 12/57:26 pm -
1 stop23h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sun 12/67:51 pm -
1 stop22h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$151
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sun 12/135:00 am -
2 stops8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Tue 11/101:45 pm -
Nonstop4h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Porter Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Wed 11/111:45 pm -
Nonstop4h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Porter Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Mon 12/143:48 pm -
1 stop12h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$153
This Trip.com deal was found by Cheapflights users on 10/21. 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.
Wed 11/2510:55 am -
1 stop7h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$154
This FlightHub deal was found by Cheapflights users on 10/21. 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.
Thu 11/51:45 pm -
Nonstop4h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Porter Airlines logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 10/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:45 pm -
Nonstop4h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Porter Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Fri 11/2010:06 pm -
1 stop29h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:45 pm -
Nonstop4h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Porter Airlines logo]()
$157
This Air Canada deal was found by Cheapflights users on 10/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/213:30 pm -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Air Canada logo]()
$157
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 October 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $267 (FlightHub) |
One-way from | $150 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $507 |
Good round-trip deal | $449 or less |
Good one-way deal | $228 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 7,457,451 searches. Data last updated October 22, 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
FresnoToronto
FAT Fresno Airterminal - YYZ Toronto Pearson Intl
FATYYZ
Fresno Airterminal
Fri 11/20
10:06 pm-6:51 am
1 stop29h 45m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$157
Santa AnaToronto
SNA Santa Ana J. Wayne/Orange Cnty - YYZ Toronto Pearson Intl
SNAYYZ
Santa Ana J. Wayne/Orange Cnty
Wed 1/6
7:30 am-6:50 am
1 stop20h 20m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$176
San FranciscoToronto
SFO San Francisco - YYZ Toronto Pearson Intl
SFOYYZ
San Francisco
Mon 1/4
4:35 pm-11:28 am
2 stops15h 53m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$178
San FranciscoToronto
SFO San Francisco - YYZ Toronto Pearson Intl
SFOYYZ
San Francisco
Mon 11/16
11:29 pm-7:30 am
Nonstop5h 01m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$186
San FranciscoToronto
SFO San Francisco - YYZ Toronto Pearson Intl
SFOYYZ
San Francisco
Tue 11/24
11:29 pm-7:30 am
Nonstop5h 01m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$186
Quickest round-trip
San FranciscoToronto
SFO San Francisco - YYZ Toronto Pearson Intl
SFOYYZ
San Francisco
Wed 1/6
8:10 am-4:08 pm
Nonstop4h 58m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$186
Los AngelesOttawa
LAX Los Angeles - YOW Ottawa
LAXYOW
Los Angeles
Sun 11/22
6:47 pm-2:09 pm
1 stop16h 22m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$186
San FranciscoToronto
SFO San Francisco - YYZ Toronto Pearson Intl
SFOYYZ
San Francisco
Wed 11/18
6:59 pm-4:05 pm
2 stops18h 06m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$191
San FranciscoToronto
SFO San Francisco - YYZ Toronto Pearson Intl
SFOYYZ
San Francisco
Mon 11/16
4:46 pm-4:05 pm
2 stops20h 19m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$191
San JoseToronto
SJC San Jose - YYZ Toronto Pearson Intl
SJCYYZ
San Jose
Thu 11/19
1:00 pm-11:57 pm
1 stop7h 57m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$192
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.
SFO-YYZ
LAX-YYZ
FAT-YYZ
SJC-YYZ
LAX-YOW
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
SFO-YYZ
LAX-YYZ
FAT-YYZ
SJC-YYZ
What is the cheapest month to book a flight from California to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from California to Region of Ontario (average of $394). Flying from California to Region of Ontario in December is currently the most expensive (average of $586). 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 October 22, 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 37% on your trip compared to booking a flight in the evening.
How much does it cost to fly round-trip from California to Region of Ontario?
Airfare is below average for this route at the moment.
California to Region of Ontario flights typically cost between $344 and $694 in November.The cheapest round-trip price found within the last 5 days was $288 on Porter Airlines (Nov 18-Nov 25).
How far ahead should I book a flight from California to Region of Ontario?
The best time to book flights from California to Region of Ontario is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 October 17, 2026.
Travelers seeking maximum savings on their California to Region of Ontario flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 October 22, 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
Food
7.6
Crew
8.6
Entertainment
6.9
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.6
Crew
8.6
Entertainment
6.9
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.6
Crew
8.6
Entertainment
6.9
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.6
Crew
8.6
Entertainment
6.9
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.6
Crew
8.6
Entertainment
6.9
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.6
Crew
8.6
Entertainment
6.9
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
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 October 22, 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 8 airlines flying from California to Ontario
Discover the top 8 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 7,457,451 searches. Data last updated October 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$502 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$135 | Average$437 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$151 | Average$684 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$156 | Average$478 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$160 | Average$474 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$167 | Average$660 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$293 | Average$430 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$321 | Average$624 | FlexibilityNo cancel fee | On-time71% |