$168+ Cheap flights from Ontario (ONT) to Caribbean
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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Apr 11 — Apr 181
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Caribbean 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
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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 Ontario to Caribbean
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Cheapest flights from Ontario to CaribbeanExplore the most affordable flight options available from Ontario to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.
Explore the most affordable flight options available from Ontario to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Wed 8/196:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/8![Frontier logo]()
$276
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Sat 8/226:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/10![Frontier logo]()
$296
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.
Sun 4/265:10 am
ONT
- SJU
1 stop9h 28m
United Airlines
Tue 5/57:20 am
SJU
- ONT
2 stops16h 16m
United Airlines
Deal found 3/8![United Airlines logo]()
$314
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Sat 8/226:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/9![Frontier logo]()
$316
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:52 pm
ONT
- SJU
2 stops13h 21m
American Airlines
Thu 5/711:59 pm
SJU
- ONT
1 stop13h 10m
American Airlines
Deal found 3/10![American Airlines logo]()
$334
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Wed 8/196:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/10![Frontier logo]()
$336
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.
Mon 4/205:10 am
ONT
- SJU
1 stop9h 28m
United Airlines
Wed 4/227:40 am
SJU
- ONT
2 stops18h 05m
United Airlines
Deal found 3/8![United Airlines logo]()
$340
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/184:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Sun 8/236:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/9![Frontier logo]()
$351
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:00 am
ONT
- SJU
1 stop12h 13m
Delta
Wed 11/181:55 pm
SJU
- ONT
1 stop12h 19m
Delta
Deal found 3/9![Delta logo]()
$353
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- SJU
1 stop11h 38m
United Airlines
Sat 5/97:40 am
SJU
- ONT
1 stop13h 21m
United Airlines
Deal found 3/9![United Airlines logo]()
$354
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Wed 8/56:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/9![Frontier logo]()
$356
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
ONT
- SJU
2 stops12h 24m
United Airlines
Wed 5/61:00 am
SJU
- ONT
2 stops14h 22m
United Airlines
Deal found 3/10![United Airlines logo]()
$359
Best flights from Ontario to CaribbeanDiscover carefully curated flight deals from Ontario to Caribbean that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.
Discover carefully curated flight deals from Ontario to Caribbean that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
ONT
- SJU
2 stops12h 24m
United Airlines
Wed 5/61:00 am
SJU
- ONT
2 stops14h 22m
United Airlines
Deal found 3/10![United Airlines logo]()
$359
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/314:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Sun 6/76:15 am
SJU
- ONT
1 stop12h 10m
Frontier
Deal found 3/7![Frontier logo]()
$391
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:55 pm
ONT
- SJU
1 stop9h 30m
Southwest
Fri 5/85:05 am
SJU
- ONT
2 stops13h 10m
Southwest
Deal found 3/8![Southwest logo]()
$429
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:15 pm
ONT
- SJU
1 stop10h 30m
Delta
Fri 5/82:48 pm
SJU
- ONT
1 stop10h 00m
Delta
Deal found 3/9![Delta logo]()
$513
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:26 pm
ONT
- GCM
1 stop11h 05m
American Airlines
Thu 5/72:10 pm
GCM
- ONT
2 stops20h 29m
American Airlines
Deal found 3/11![American Airlines logo]()
$540
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:00 pm
ONT
- PUJ
1 stop10h 50m
JetBlue
Mon 6/111:10 am
PUJ
- ONT
1 stop12h 35m
JetBlue
Deal found 3/7![JetBlue logo]()
$603
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:00 am
ONT
- SJU
1 stop10h 34m
United Airlines
Fri 5/87:20 am
SJU
- ONT
2 stops18h 15m
United Airlines
Deal found 3/9![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 4/276:49 pm
ONT
- SJU
2 stops15h 56m
United Airlines
Wed 4/291:00 am
SJU
- ONT
2 stops14h 22m
United Airlines
Deal found 3/11![United Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:08 pm
ONT
- SXM
2 stops18h 29m
American Airlines
Tue 4/144:35 pm
SXM
- ONT
2 stops20h 34m
American Airlines
Deal found 3/12![American Airlines logo]()
$552
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
ONT
- SJU
1 stop10h 34m
United Airlines
Fri 5/87:20 am
SJU
- ONT
2 stops18h 15m
United Airlines
Deal found 3/9![United Airlines logo]()
$464
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.
Wed 5/61:29 pm
ONT
- GCM
2 stops20h 25m
Delta
Mon 5/181:19 pm
GCM
- ONT
1 stop10h 29m
Delta
Deal found 3/8![Delta logo]()
$602
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:59 pm
ONT
- SXM
2 stops14h 22m
American Airlines
Tue 4/144:35 pm
SXM
- ONT
2 stops20h 34m
American Airlines
Deal found 3/12![American Airlines logo]()
$552
This KAYAK deal was found by Cheapflights users on 3/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1010:00 pm
ONT
- STI
1 stop16h 33m
JetBlue
Tue 7/1411:05 am
STI
- ONT
1 stop14h 35m
JetBlue
Deal found 3/11![JetBlue logo]()
$624
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.
Sat 4/251:34 pm
ONT
- MBJ
2 stops23h 36m
United Airlines
Wed 4/294:12 pm
MBJ
- ONT
2 stops22h 10m
United Airlines
Deal found 3/7![United Airlines logo]()
$487
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:08 pm
ONT
- SXM
2 stops18h 29m
American Airlines
Wed 4/154:35 pm
SXM
- ONT
2 stops31h 32m
American Airlines
Deal found 3/12![American Airlines logo]()
$552
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
ONT
- SJU
1 stop10h 34m
United Airlines
Sat 5/97:40 am
SJU
- ONT
1 stop13h 21m
United Airlines
Deal found 3/9![United Airlines logo]()
$504
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:30 am
ONT
- STI
2 stops25h 53m
American Airlines
Tue 4/141:32 pm
STI
- ONT
2 stops23h 37m
American Airlines
Deal found 3/9![American Airlines logo]()
$561
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:55 pm
ONT
- STI
2 stops15h 45m
Delta
Sun 6/148:50 pm
STI
- ONT
2 stops18h 39m
Delta
Deal found 3/12![Delta logo]()
$693
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:10 am
ONT
- MBJ
2 stops29h 40m
United Airlines
Wed 4/294:12 pm
MBJ
- ONT
2 stops22h 10m
United Airlines
Deal found 3/10![United Airlines logo]()
$507
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1211:59 pm
ONT
- STI
1 stop16h 42m
JetBlue
Sat 7/2511:05 am
STI
- ONT
1 stop14h 35m
JetBlue
Deal found 3/9![JetBlue logo]()
$766
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:15 pm
ONT
- SDQ
1 stop11h 57m
Delta
Tue 5/57:59 pm
SDQ
- ONT
2 stops19h 15m
Delta
Deal found 3/12![Delta logo]()
$728
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:34 pm
ONT
- MBJ
2 stops21h 16m
United Airlines
Tue 4/214:12 pm
MBJ
- ONT
2 stops27h 35m
United Airlines
Deal found 3/9![United Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 pm
ONT
- KIN
2 stops19h 54m
American Airlines
Tue 6/98:00 am
KIN
- ONT
2 stops13h 56m
American Airlines
Deal found 3/12![American Airlines logo]()
$648
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:30 pm
ONT
- MBJ
2 stops22h 00m
United Airlines
Sat 5/232:40 pm
MBJ
- ONT
2 stops24h 07m
United Airlines
Deal found 3/10![United Airlines logo]()
$529
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/111:59 pm
ONT
- KIN
1 stop18h 33m
JetBlue
Thu 7/99:05 am
KIN
- ONT
1 stop15h 35m
JetBlue
Deal found 3/8![JetBlue logo]()
$894
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 5/77:00 am
ONT
- SJU
1 stop10h 34m
United Airlines
Sat 5/97:40 am
SJU
- ONT
1 stop13h 21m
United Airlines
Deal found 3/7![United Airlines logo]()
$539
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:26 pm
ONT
- AUA
1 stop12h 34m
American Airlines
Wed 5/65:25 pm
AUA
- ONT
2 stops19h 44m
American Airlines
Deal found 3/7![American Airlines logo]()
$756
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:45 am
ONT
- MBJ
1 stop7h 41m
United Airlines
Wed 6/174:12 pm
MBJ
- ONT
2 stops31h 43m
United Airlines
Deal found 3/12![United Airlines logo]()
$547
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:05 am
ONT
- KIN
1 stop10h 55m
Delta
Sat 5/29:00 am
KIN
- ONT
2 stops15h 43m
Delta
Deal found 3/11![Delta logo]()
$1,009
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.
Sat 4/45:10 am
ONT
- NAS
2 stops29h 37m
United Airlines
Thu 4/93:59 pm
NAS
- ONT
1 stop9h 32m
United Airlines
Deal found 3/7![United Airlines logo]()
$558
Last-minute flights from Ontario to CaribbeanDiscover last-minute flight deals from Ontario to Caribbean. Data last updated March 12, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Caribbean. Data last updated March 12, 2026 and is based on user searches.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/112:22 pm
ONT
- SXM
2 stops20h 07m
American Airlines
Wed 4/84:35 pm
SXM
- ONT
2 stops20h 34m
American Airlines
Deal found 3/9![American Airlines logo]()
$433
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.
Tue 4/75:18 pm
ONT
- SJU
1 stop14h 49m
Multiple Airlines
Tue 4/1411:00 am
SJU
- ONT
2 stops39h 55m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$407
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.
Mon 4/205:10 am
ONT
- SJU
1 stop9h 28m
United Airlines
Wed 4/227:40 am
SJU
- ONT
2 stops18h 05m
United Airlines
Deal found 3/8![United Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:26 pm
ONT
- MBJ
1 stop8h 47m
American Airlines
Thu 4/3012:25 pm
MBJ
- ONT
1 stop10h 42m
American Airlines
Deal found 3/12![American Airlines logo]()
$382
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:05 am
ONT
- SJU
1 stop11h 33m
United Airlines
Sat 5/27:40 am
SJU
- ONT
1 stop13h 21m
United Airlines
Deal found 3/10![United Airlines logo]()
$402
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.
Sat 4/257:05 am
ONT
- SJU
1 stop13h 07m
Delta
Wed 5/612:55 pm
SJU
- ONT
1 stop11h 05m
Delta
Deal found 3/7![Delta logo]()
$336
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.
Sat 4/256:05 am
ONT
- SJU
1 stop11h 33m
United Airlines
Tue 4/287:20 am
SJU
- ONT
2 stops16h 16m
United Airlines
Deal found 3/8![United Airlines logo]()
$382
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:19 pm
ONT
- SJU
2 stops13h 13m
American Airlines
Tue 4/286:45 am
SJU
- ONT
2 stops14h 39m
American Airlines
Deal found 3/8![American Airlines logo]()
$396
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.
Sun 4/265:10 am
ONT
- SJU
1 stop9h 28m
United Airlines
Tue 5/57:20 am
SJU
- ONT
2 stops16h 16m
United Airlines
Deal found 3/8![United Airlines logo]()
$314
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:50 pm
ONT
- SJU
2 stops14h 20m
Southwest
Tue 5/55:35 am
SJU
- ONT
2 stops13h 45m
Southwest
Deal found 3/8![Southwest logo]()
$414
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:52 pm
ONT
- SJU
2 stops13h 21m
American Airlines
Thu 5/711:59 pm
SJU
- ONT
1 stop13h 10m
American Airlines
Deal found 3/10![American Airlines logo]()
$334
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
ONT
- SJU
2 stops12h 24m
United Airlines
Wed 5/61:00 am
SJU
- ONT
2 stops14h 22m
United Airlines
Deal found 3/10![United Airlines logo]()
$359
One-way flights from Ontario to CaribbeanSearch for one-way flight options from Ontario to Caribbean. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
Search for one-way flight options from Ontario to Caribbean. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
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.
Sun 4/196:49 pm
ONT
- NAS
2 stops17h 08m
United Airlines
Deal found 3/7![United Airlines logo]()
$168
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:15 am
ONT
- SJU
2 stops16h 48m
Frontier
Deal found 3/10![Frontier logo]()
$170
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:59 pm
ONT
- SXM
2 stops12h 43m
American Airlines
Deal found 3/9![American Airlines logo]()
$173
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:29 pm
ONT
- SXM
1 stop10h 52m
American Airlines
Deal found 3/11![American Airlines logo]()
$175
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/64:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Deal found 3/9![Frontier logo]()
$176
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:29 pm
ONT
- SXM
2 stops13h 40m
American Airlines
Deal found 3/12![American Airlines logo]()
$177
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:19 pm
ONT
- SXM
2 stops20h 18m
American Airlines
Deal found 3/9![American Airlines logo]()
$183
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/94:15 pm
ONT
- SJU
1 stop10h 38m
Frontier
Deal found 3/10![Frontier logo]()
$188
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/242:23 pm
ONT
- SJU
2 stops20h 46m
Frontier
Deal found 3/10![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/76:00 am
ONT
- SJU
2 stops43h 01m
Frontier
Deal found 3/11![Frontier logo]()
$195
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.
Sat 5/97:00 am
ONT
- SJU
1 stop10h 34m
United Airlines
Deal found 3/8![United Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/88:06 pm
ONT
- SJU
2 stops23h 37m
Frontier
Deal found 3/11![Frontier logo]()
$203
Find flight deals from Ontario to Caribbean
Keep the following information in mind while searching for Ontario to Caribbean flight deals. Data was last updated March 12, 2026.
Round-trip from | $276 (Frontier) |
|---|---|
One-way from | $168 (United Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $488 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Caribbean 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 12, 2026.
Use the filters below to find and compare flights from Ontario to Caribbean that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Tue 4/28
6:00 am-9:24 pm
2 stops12h 24m
San Juan Luis Munoz Marin Intl
Wed 5/6
1:00 am-12:22 pm
2 stops14h 22m
$359
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Sun 5/31
4:15 pm-5:53 am
1 stop10h 38m
San Juan Luis Munoz Marin Intl
Sun 6/7
6:15 am-3:25 pm
1 stop12h 10m
$391
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Sun 5/3
7:00 am-8:34 pm
1 stop10h 34m
San Juan Luis Munoz Marin Intl
Fri 5/8
7:20 am-10:35 pm
2 stops18h 15m
$424
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Fri 5/1
9:55 pm-10:25 am
1 stop9h 30m
San Juan Luis Munoz Marin Intl
Fri 5/8
5:05 am-3:15 pm
2 stops13h 10m
$429
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Mon 4/27
6:49 pm-1:45 pm
2 stops15h 56m
San Juan Luis Munoz Marin Intl
Wed 4/29
1:00 am-12:22 pm
2 stops14h 22m
$464
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Sat 5/2
7:00 am-8:34 pm
1 stop10h 34m
San Juan Luis Munoz Marin Intl
Fri 5/8
7:20 am-10:35 pm
2 stops18h 15m
$464
OntarioMontego Bay
ONT - MBJ
ONTMBJ
Ontario
Sat 4/25
1:34 pm-3:10 pm
2 stops23h 36m
Montego Bay Sangster Intl
Wed 4/29
4:12 pm-12:22 pm
2 stops22h 10m
$487
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Sat 5/2
7:00 am-8:34 pm
1 stop10h 34m
San Juan Luis Munoz Marin Intl
Sat 5/9
7:40 am-6:01 pm
1 stop13h 21m
$504
OntarioMontego Bay
ONT - MBJ
ONTMBJ
Ontario
Thu 4/23
5:10 am-12:50 pm
2 stops29h 40m
Montego Bay Sangster Intl
Wed 4/29
4:12 pm-12:22 pm
2 stops22h 10m
$507
Quickest round-trip
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Sat 5/2
10:15 pm-11:45 am
1 stop10h 30m
San Juan Luis Munoz Marin Intl
Fri 5/8
2:48 pm-9:48 pm
1 stop10h 00m
$513
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Caribbean
Have a flexible travel schedule? Discover the best time to fly to Caribbean from Ontario with our price prediction graph.
ONT-SJU
ONT-GCM
ONT-PUJ
ONT-SXM
ONT-STI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Caribbean
ONT-0CB
ONT-SJU
ONT-GCM
ONT-PUJ
ONT-SXM
What is the cheapest month to book a flight from Ontario to Caribbean?
Currently, April is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $141). Flying from Ontario to Caribbean in November is currently the most expensive (average of $286). 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.
Reviews of airlines servicing Caribbean
Get insights into the airlines that provide service to Caribbean. 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 Caribbean. Reviews last updated March 12, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andJetBlue from Ontario to Caribbean. 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.
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Caribbean. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Ontario to Caribbean
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Caribbean by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Caribbean by cabin class
Find flights from Ontario to Caribbean, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Caribbean flights
Browse other Ontario and Caribbean flight options. Last updated on March 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Caribbean countries
Consider these flights traveling to countries located in Caribbean.
Ontario to Caribbean flights
Consider these flights traveling from Ontario to Caribbean.
Top 6 airlines flying from Ontario to Caribbean
Discover the top 6 airlines that operate flights from Ontario to Caribbean. 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$73 | Average$467 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$292 | Average$597 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$321 | Average$644 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$365 | Average$669 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$421 | Average$579 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$445 | Average$660 | FlexibilityNo cancel fee | On-time63% |