$167+ Cheap flights from San Diego (SAN) 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
Sep 12 — Sep 191
Round-trip
1 adult, Economy
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Find cheap flights from San Diego to Ontario with Cheapflights
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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
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Cheapest flights from San Diego to OntarioExplore the most affordable flight options available from San Diego to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2026.
Explore the most affordable flight options available from San Diego to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2026.
This Trip.com deal was found by Cheapflights users on 8/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:04 pm -
2 stops21h 16m
Sun 9/277:20 am -
1 stop9h 50m
Deal found 8/10![Multiple Airlines logo]()
$341
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:30 pm -
1 stop12h 35m
Thu 9/247:15 am -
1 stop9h 55m
Deal found 8/12![WestJet logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Tue 9/155:54 pm -
1 stop23h 15m
Mon 9/219:00 am -
2 stops14h 17m
Deal found 8/8![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/27:04 pm -
1 stop21h 15m
Tue 10/69:30 am -
1 stop30h 23m
Deal found 8/11![Multiple Airlines logo]()
$364
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:30 pm -
1 stop29h 15m
Tue 9/87:15 am -
1 stop9h 55m
Deal found 8/13![WestJet logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/57:04 pm -
1 stop21h 15m
Sun 10/113:50 pm -
2 stops23h 50m
Deal found 8/11![Multiple Airlines logo]()
$371
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:30 pm -
1 stop12h 35m
Sun 9/207:15 am -
1 stop9h 55m
Deal found 8/13![WestJet logo]()
$371
This Justfly.com deal was found by Cheapflights users on 8/13. 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.
Sat 9/193:30 pm -
1 stop12h 35m
Sun 10/47:15 am -
1 stop9h 55m
Deal found 8/13![WestJet logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 9/107:04 pm -
2 stops27h 01m
Wed 9/169:55 am -
1 stop10h 04m
Deal found 8/8![Multiple Airlines logo]()
$377
This FlightHub deal was found by Cheapflights users on 8/10. 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.
Tue 9/153:30 pm -
1 stop11h 15m
Sat 9/196:00 am -
1 stop11h 10m
Deal found 8/10![WestJet logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/17:04 pm -
1 stop21h 15m
Mon 10/53:50 pm -
2 stops20h 53m
Deal found 8/11![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 9/289:03 pm -
1 stop20h 06m
Thu 10/19:45 am -
1 stop11h 34m
Deal found 8/8![Multiple Airlines logo]()
$381
Best flights from San Diego to OntarioDiscover carefully curated flight deals from San Diego to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
Discover carefully curated flight deals from San Diego to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
This WestJet deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:30 pm -
1 stop24h 50m
Fri 9/257:20 am -
1 stop9h 50m
Deal found 8/12![WestJet logo]()
$436
This Air Canada deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 9/197:00 am -
Nonstop5h 27m
Thu 9/245:45 pm -
Nonstop5h 51m
Deal found 8/12![Air Canada logo]()
$478
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 9/185:45 pm -
1 stop17h 40m
Sun 9/201:45 pm -
1 stop23h 15m
Deal found 8/12![Multiple Airlines logo]()
$481
This Delta deal was found by Cheapflights users on 8/8. 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.
Tue 9/811:54 am -
1 stop8h 50m
Fri 9/117:00 am -
1 stop9h 18m
Deal found 8/8![Delta logo]()
$550
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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.
Fri 10/23:50 pm -
1 stop20h 55m
Wed 10/74:55 pm -
2 stops18h 50m
Deal found 8/8![Alaska Airlines logo]()
$592
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/2011:19 am -
1 stop17h 57m
Wed 10/2111:23 am -
1 stop11h 20m
Deal found 8/11![United Airlines logo]()
$611
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
Wed 9/93:30 pm -
1 stop22h 45m
Tue 9/156:10 pm -
1 stop23h 00m
Deal found 8/12![WestJet logo]()
$444
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
Wed 9/93:30 pm -
1 stop22h 45m
Thu 9/176:10 pm -
1 stop23h 00m
Deal found 8/12![WestJet logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Mon 8/318:59 pm -
1 stop17h 20m
Tue 9/86:00 am -
2 stops17h 15m
Deal found 8/9![Multiple Airlines logo]()
$492
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:10 pm -
1 stop17h 10m
Thu 10/15:40 am -
1 stop9h 36m
Deal found 8/10![Air Canada logo]()
$542
This WestJet deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:30 pm -
1 stop22h 45m
Thu 9/176:10 pm -
1 stop23h 00m
Deal found 8/12![WestJet logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:59 pm -
1 stop17h 20m
Thu 9/177:20 am -
2 stops15h 57m
Deal found 8/10![Multiple Airlines logo]()
$512
This Delta deal was found by Cheapflights users on 8/8. 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.
Fri 10/212:52 pm -
1 stop8h 07m
Wed 10/71:34 pm -
1 stop11h 28m
Deal found 8/8![Delta logo]()
$582
This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/237:27 pm -
1 stop17h 18m
Tue 10/275:15 pm -
2 stops19h 41m
Deal found 8/11![Alaska Airlines logo]()
$603
This Air Canada deal was found by Cheapflights users on 8/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
2 stops13h 03m
Sat 9/2611:45 am -
2 stops11h 51m
Deal found 8/8![Air Canada logo]()
$551
This oojo deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 9/173:30 pm -
1 stop25h 20m
Thu 9/248:40 pm -
1 stop20h 30m
Deal found 8/12![WestJet logo]()
$462
This United Airlines deal was found by Cheapflights users on 8/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:30 pm -
1 stop9h 10m
Fri 9/119:45 am -
2 stops14h 00m
Deal found 8/10![United Airlines logo]()
$635
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:00 pm -
1 stop7h 49m
Thu 10/226:15 am -
1 stop7h 58m
Deal found 8/10![Delta logo]()
$582
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Mon 9/78:59 pm -
1 stop12h 58m
Mon 9/143:45 pm -
1 stop22h 27m
Deal found 8/9![Multiple Airlines logo]()
$533
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:05 am -
2 stops12h 31m
Sat 11/145:00 am -
1 stop10h 00m
Deal found 8/10![Air Canada logo]()
$572
This Justfly.com deal was found by Cheapflights users on 8/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:30 pm -
1 stop25h 20m
Sat 9/198:40 pm -
1 stop20h 30m
Deal found 8/9![WestJet logo]()
$475
This United Airlines deal was found by Cheapflights users on 8/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:41 pm -
2 stops11h 59m
Wed 10/72:20 pm -
1 stop9h 09m
Deal found 8/10![United Airlines logo]()
$635
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:38 pm -
1 stop8h 21m
Sun 11/86:33 pm -
1 stop7h 51m
Deal found 8/10![Delta logo]()
$582
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 9/118:59 pm -
1 stop12h 58m
Fri 9/188:50 am -
1 stop15h 40m
Deal found 8/12![Multiple Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 9/226:15 am -
2 stops14h 39m
Fri 9/256:25 am -
1 stop8h 00m
Deal found 8/8![United Airlines logo]()
$635
This oojo deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 9/173:30 pm -
1 stop22h 45m
Thu 9/246:10 pm -
1 stop23h 00m
Deal found 8/12![WestJet logo]()
$478
This Delta deal was found by Cheapflights users on 8/8. 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.
Sat 10/247:47 am -
2 stops12h 35m
Wed 10/287:00 am -
1 stop8h 44m
Deal found 8/8![Delta logo]()
$597
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sat 11/79:04 pm -
1 stop9h 50m
Sat 11/142:20 pm -
1 stop10h 08m
Deal found 8/8![Multiple Airlines logo]()
$546
This Air Canada deal was found by Cheapflights users on 8/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
1 stop9h 45m
Fri 9/252:45 pm -
1 stop8h 51m
Deal found 8/8![Air Canada logo]()
$621
This FlightHub deal was found by Cheapflights users on 8/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:30 pm -
1 stop25h 20m
Sun 9/278:40 pm -
1 stop20h 30m
Deal found 8/8![WestJet logo]()
$483
Last-minute flights from San Diego to OntarioDiscover last-minute flight deals from San Diego to Ontario. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Ontario. Data last updated August 13, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:30 pm -
1 stop29h 15m
Tue 9/87:15 am -
1 stop9h 55m
Deal found 8/13![WestJet logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sat 9/56:25 am -
2 stops14h 34m
Thu 9/108:35 pm -
1 stop26h 42m
Deal found 8/9![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Mon 9/78:59 pm -
1 stop30h 40m
Mon 9/1410:30 pm -
2 stops21h 29m
Deal found 8/9![Multiple Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 9/107:04 pm -
2 stops27h 01m
Wed 9/169:55 am -
1 stop10h 04m
Deal found 8/8![Multiple Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Tue 9/155:54 pm -
1 stop23h 15m
Mon 9/219:00 am -
2 stops14h 17m
Deal found 8/8![Multiple Airlines logo]()
$362
This FlightHub deal was found by Cheapflights users on 8/10. 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.
Tue 9/153:30 pm -
1 stop11h 15m
Sat 9/196:00 am -
1 stop11h 10m
Deal found 8/10![WestJet logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/155:54 pm -
1 stop23h 15m
Tue 9/229:45 am -
1 stop11h 34m
Deal found 8/11![Multiple Airlines logo]()
$383
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:30 pm -
1 stop12h 35m
Sun 9/207:15 am -
1 stop9h 55m
Deal found 8/13![WestJet logo]()
$371
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:30 pm -
1 stop12h 35m
Thu 9/247:15 am -
1 stop9h 55m
Deal found 8/12![WestJet logo]()
$346
This Justfly.com deal was found by Cheapflights users on 8/13. 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.
Sat 9/193:30 pm -
1 stop12h 35m
Sun 10/47:15 am -
1 stop9h 55m
Deal found 8/13![WestJet logo]()
$373
This Trip.com deal was found by Cheapflights users on 8/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:04 pm -
2 stops21h 16m
Sun 9/277:20 am -
1 stop9h 50m
Deal found 8/10![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 9/289:03 pm -
1 stop20h 06m
Thu 10/19:45 am -
1 stop11h 34m
Deal found 8/8![Multiple Airlines logo]()
$381
One-way flights from San Diego to OntarioSearch for one-way flight options from San Diego to Ontario. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
Search for one-way flight options from San Diego to Ontario. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
This deal was found by Cheapflights users on 8/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 am -
Nonstop5h 27m
Deal found 8/8![Air Canada logo]()
$167
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:30 pm -
1 stop12h 35m
Deal found 8/13![WestJet logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 10/191:35 pm -
2 stops14h 30m
Deal found 8/8![Multiple Airlines logo]()
$177
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:30 pm -
1 stop12h 35m
Deal found 8/13![WestJet logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:04 pm -
2 stops33h 01m
Deal found 8/10![Multiple Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/81:35 pm -
2 stops14h 30m
Deal found 8/11![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 9/107:04 pm -
2 stops21h 16m
Deal found 8/8![Multiple Airlines logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/257:04 pm -
2 stops31h 31m
Deal found 8/11![Multiple Airlines logo]()
$196
This Trip.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2912:35 pm -
1 stop24h 42m
Deal found 8/11![WestJet logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 8/318:59 pm -
3 stops59h 36m
Deal found 8/8![Multiple Airlines logo]()
$215
This Trip.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:30 pm -
1 stop22h 45m
Deal found 8/12![WestJet logo]()
$218
This FlightHub deal was found by Cheapflights users on 8/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:30 pm -
1 stop11h 05m
Deal found 8/8![WestJet logo]()
$233
Find flight deals from San Diego to Ontario
Keep the following information in mind while searching for San Diego to Ontario flight deals. Data was last updated August 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $336 (Kiwi.com) |
One-way from | $167 |
Popular in | October |
Cheapest in | January |
Average price | $614 |
Good round-trip deal | $502 or less |
Good one-way deal | $302 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego 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 August 13, 2026.
Use the filters below to find and compare flights from San Diego to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoOttawa
SAN San Diego - YOW Ottawa
SANYOW
San Diego
Tue 9/22
3:30 pm-7:20 pm
1 stop24h 50m
Ottawa
Fri 9/25
7:20 am-2:10 pm
1 stop9h 50m
$436
San DiegoHamilton
SAN San Diego - YHM Hamilton
SANYHM
San Diego
Wed 9/9
3:30 pm-5:15 pm
1 stop22h 45m
Hamilton
Tue 9/15
6:10 pm-2:10 pm
1 stop23h 00m
$444
San DiegoHamilton
SAN San Diego - YHM Hamilton
SANYHM
San Diego
Wed 9/9
3:30 pm-5:15 pm
1 stop22h 45m
Hamilton
Thu 9/17
6:10 pm-2:10 pm
1 stop23h 00m
$444
San DiegoHamilton
SAN San Diego - YHM Hamilton
SANYHM
San Diego
Sat 9/12
3:30 pm-5:15 pm
1 stop22h 45m
Hamilton
Thu 9/17
6:10 pm-2:10 pm
1 stop23h 00m
$458
San DiegoToronto
SAN San Diego - YKF Toronto Region of Waterloo Intl
SANYKF
San Diego
Thu 9/17
3:30 pm-7:50 pm
1 stop25h 20m
Toronto Region of Waterloo Intl
Thu 9/24
8:40 pm-2:10 pm
1 stop20h 30m
$462
San DiegoToronto
SAN San Diego - YKF Toronto Region of Waterloo Intl
SANYKF
San Diego
Tue 9/15
3:30 pm-7:50 pm
1 stop25h 20m
Toronto Region of Waterloo Intl
Sat 9/19
8:40 pm-2:10 pm
1 stop20h 30m
$475
Quickest round-trip
San DiegoMontreal
SAN San Diego - YUL Montreal Pierre Elliott Trudeau Intl
SANYUL
San Diego
Sat 9/19
7:00 am-3:27 pm
Nonstop5h 27m
Montreal Pierre Elliott Trudeau Intl
Thu 9/24
5:45 pm-8:36 pm
Nonstop5h 51m
$478
San DiegoHamilton
SAN San Diego - YHM Hamilton
SANYHM
San Diego
Thu 9/17
3:30 pm-5:15 pm
1 stop22h 45m
Hamilton
Thu 9/24
6:10 pm-2:10 pm
1 stop23h 00m
$478
San DiegoToronto
SAN San Diego - YTZ Toronto Island
SANYTZ
San Diego
Fri 9/18
5:45 pm-2:25 pm
1 stop17h 40m
Toronto Island
Sun 9/20
1:45 pm-10:00 am
1 stop23h 15m
$481
San DiegoToronto
SAN San Diego - YKF Toronto Region of Waterloo Intl
SANYKF
San Diego
Wed 9/23
3:30 pm-7:50 pm
1 stop25h 20m
Toronto Region of Waterloo Intl
Sun 9/27
8:40 pm-2:10 pm
1 stop20h 30m
$483
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Diego to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from San Diego with our price prediction graph.
SAN-YOW
SAN-YUL
SAN-YYZ
SAN-YHM
SAN-YKF
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 San Diego to Ontario
SAN-CAON
SAN-YOW
SAN-YUL
SAN-YYZ
SAN-YHM
What is the cheapest month to book a flight from San Diego to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of $434). Flying from San Diego to Region of Ontario in August is currently the most expensive (average of $658). 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 SAN to ON?
Find hourly flight availability from San Diego 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 August 13, 2026.
When flying from San Diego to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from San Diego to Region of Ontario?
Airfare is below average for this route at the moment.
San Diego to Region of Ontario flights typically cost between $588 and $807 in September.The cheapest round-trip price found within the last 5 days was $336 on Multiple Airlines (Sep 8-Sep 18).
How far ahead should I book a flight from San Diego to Region of Ontario?
The price you pay for your flight from San Diego to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 August 13, 2026.
See what other customers who have flown with Delta,Qatar Airways, andUnited Airlines from San Diego to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Diego to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Diego to Ontario
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Complete your trip
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Search flights from San Diego to Ontario by cabin class
Find flights from San Diego to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Diego and Ontario flights
Browse other San Diego and Ontario flight options. Last updated on August 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Diego to Ontario flights
Consider these flights traveling from San Diego to Ontario.
Top 4 airlines flying from San Diego to Ontario
Discover the top 4 airlines that operate flights from San Diego 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 August 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$212 | Average$523 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$566 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$298 | Average$628 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$418 | Average$599 | FlexibilityNo cancel fee | On-time71% |