$150+ Cheap flights from Ontario (ONT) to Puerto Rico
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
May 9 — May 161
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Puerto Rico 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 Puerto Rico
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Cheapest flights from Ontario to Puerto RicoExplore the most affordable flight options available from Ontario to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
Explore the most affordable flight options available from Ontario to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 5/169:15 am
ONT
- SJU
1 stop25h 17m
Multiple Airlines
Sat 5/239:45 pm
SJU
- ONT
2 stops39h 20m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/2610:26 pm
ONT
- SJU
1 stop19h 25m
American Airlines
Tue 4/285:45 am
SJU
- ONT
2 stops13h 37m
American Airlines
Deal found 4/4![American Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:59 pm
ONT
- SJU
1 stop12h 03m
American Airlines
Mon 9/217:05 pm
SJU
- ONT
2 stops19h 43m
American Airlines
Deal found 4/5![American Airlines logo]()
$354
This American Airlines deal was found by Cheapflights users on 4/7. 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 8/196:17 am
ONT
- SJU
2 stops14h 23m
American Airlines
Tue 8/2510:32 am
SJU
- ONT
2 stops13h 56m
American Airlines
Deal found 4/7![American Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Fri 5/11:59 pm
ONT
- SJU
1 stop30h 11m
Multiple Airlines
Sun 5/103:12 pm
SJU
- ONT
2 stops43h 23m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 4/8. 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.
Fri 9/1811:59 pm
ONT
- SJU
1 stop12h 03m
American Airlines
Fri 9/253:42 pm
SJU
- ONT
1 stop10h 24m
American Airlines
Deal found 4/8![American Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/258:00 am
ONT
- SJU
1 stop12h 10m
Multiple Airlines
Sun 5/33:31 pm
SJU
- ONT
2 stops45h 34m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:59 pm
ONT
- SJU
1 stop9h 57m
Delta
Fri 8/211:06 pm
SJU
- ONT
1 stop11h 50m
Delta
Deal found 4/5![Delta logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:15 am
ONT
- SJU
1 stop11h 55m
Multiple Airlines
Tue 4/2811:30 am
SJU
- ONT
2 stops39h 25m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:05 am
ONT
- BQN
2 stops14h 04m
United Airlines
Fri 4/2412:15 am
BQN
- ONT
2 stops15h 23m
United Airlines
Deal found 4/6![United Airlines logo]()
$470
This Trip.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:00 am
ONT
- BQN
2 stops35h 53m
Frontier
Sun 4/128:27 pm
BQN
- ONT
2 stops49h 22m
Frontier
Deal found 4/6![Frontier logo]()
$648
This United Airlines deal was found by Cheapflights users on 4/7. 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 4/256:05 am
ONT
- BQN
2 stops14h 04m
United Airlines
Fri 5/112:15 am
BQN
- ONT
2 stops23h 21m
United Airlines
Deal found 4/7![United Airlines logo]()
$732
Best flights from Ontario to Puerto RicoDiscover carefully curated flight deals from Ontario to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
Discover carefully curated flight deals from Ontario to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
This Southwest deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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.
Wed 8/56:50 am
ONT
- SJU
2 stops12h 10m
Southwest
Tue 8/115:15 am
SJU
- ONT
2 stops11h 50m
Southwest
Deal found 4/4![Southwest logo]()
$452
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 4/6![United Airlines logo]()
$464
This Southwest deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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.
Sat 4/259:55 pm
ONT
- SJU
1 stop15h 35m
Southwest
Sun 5/35:00 am
SJU
- ONT
1 stop13h 10m
Southwest
Deal found 4/4![Southwest logo]()
$468
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:05 am
ONT
- BQN
2 stops14h 04m
United Airlines
Fri 4/2412:15 am
BQN
- ONT
2 stops15h 23m
United Airlines
Deal found 4/6![United Airlines logo]()
$470
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:45 pm
ONT
- SJU
2 stops10h 50m
Southwest
Fri 4/242:00 pm
SJU
- ONT
2 stops12h 05m
Southwest
Deal found 4/5![Southwest logo]()
$470
This United Airlines deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 9/67:13 pm
ONT
- SJU
2 stops17h 29m
United Airlines
Sat 9/192:55 pm
SJU
- ONT
1 stop10h 04m
United Airlines
Deal found 4/4![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 5/45:00 am
ONT
- SJU
1 stop9h 38m
United Airlines
Wed 5/62:55 pm
SJU
- ONT
1 stop10h 03m
United Airlines
Deal found 4/4![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:10 am
ONT
- SJU
1 stop9h 28m
United Airlines
Sat 4/257:00 am
SJU
- ONT
2 stops13h 47m
United Airlines
Deal found 4/5![United Airlines logo]()
$560
This United Airlines deal was found by Cheapflights users on 4/7. 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.
Wed 8/56:30 am
ONT
- SJU
1 stop11h 04m
United Airlines
Tue 8/112:20 pm
SJU
- ONT
1 stop10h 39m
United Airlines
Deal found 4/7![United Airlines logo]()
$560
This United Airlines deal was found by Cheapflights users on 4/7. 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 4/256:05 am
ONT
- BQN
2 stops14h 04m
United Airlines
Fri 5/112:15 am
BQN
- ONT
2 stops23h 21m
United Airlines
Deal found 4/7![United Airlines logo]()
$732
This United Airlines deal was found by Cheapflights users on 4/7. 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 4/265:10 am
ONT
- BQN
2 stops14h 59m
United Airlines
Fri 5/112:15 am
BQN
- ONT
2 stops23h 21m
United Airlines
Deal found 4/7![United Airlines logo]()
$862
Last-minute flights from Ontario to Puerto RicoDiscover last-minute flight deals from Ontario to Puerto Rico. Data last updated April 9, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Puerto Rico. Data last updated April 9, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:00 am
ONT
- BQN
2 stops35h 53m
Frontier
Sun 4/128:27 pm
BQN
- ONT
2 stops49h 22m
Frontier
Deal found 4/6![Frontier logo]()
$648
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 am
ONT
- BQN
2 stops14h 09m
United Airlines
Fri 4/1712:15 am
BQN
- ONT
2 stops15h 05m
United Airlines
Deal found 4/6![United Airlines logo]()
$830
This United Airlines deal was found by Cheapflights users on 4/7. 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.
Mon 4/136:00 am
ONT
- BQN
2 stops14h 09m
United Airlines
Thu 4/1612:15 am
BQN
- ONT
2 stops15h 05m
United Airlines
Deal found 4/7![United Airlines logo]()
$843
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 4/218:15 am
ONT
- SJU
1 stop11h 55m
Multiple Airlines
Tue 4/283:08 am
SJU
- ONT
2 stops23h 47m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:05 am
ONT
- BQN
2 stops14h 04m
United Airlines
Fri 4/2412:15 am
BQN
- ONT
2 stops15h 23m
United Airlines
Deal found 4/6![United Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:15 am
ONT
- SJU
1 stop11h 55m
Multiple Airlines
Tue 4/2811:30 am
SJU
- ONT
2 stops39h 25m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 4/7. 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 4/226:15 am
ONT
- SJU
2 stops13h 47m
American Airlines
Tue 4/287:25 am
SJU
- ONT
2 stops13h 59m
American Airlines
Deal found 4/7![American Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/258:00 am
ONT
- SJU
1 stop12h 10m
Multiple Airlines
Sun 5/33:31 pm
SJU
- ONT
2 stops45h 34m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 4/7. 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 4/256:05 am
ONT
- BQN
2 stops14h 04m
United Airlines
Fri 5/112:15 am
BQN
- ONT
2 stops23h 21m
United Airlines
Deal found 4/7![United Airlines logo]()
$732
This American Airlines deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/2610:26 pm
ONT
- SJU
1 stop19h 25m
American Airlines
Tue 4/285:45 am
SJU
- ONT
2 stops13h 37m
American Airlines
Deal found 4/4![American Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Fri 5/11:59 pm
ONT
- SJU
1 stop30h 11m
Multiple Airlines
Sun 5/103:12 pm
SJU
- ONT
2 stops43h 23m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 5/169:15 am
ONT
- SJU
1 stop25h 17m
Multiple Airlines
Sat 5/239:45 pm
SJU
- ONT
2 stops39h 20m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$339
One-way flights from Ontario to Puerto RicoSearch for one-way flight options from Ontario to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
Search for one-way flight options from Ontario to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Fri 5/88:06 pm
ONT
- SJU
2 stops32h 58m
Frontier
Deal found 4/8![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:59 am
ONT
- SJU
2 stops43h 30m
Frontier
Deal found 4/6![Frontier logo]()
$173
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 pm
ONT
- SJU
1 stop11h 01m
Delta
Deal found 4/6![Delta logo]()
$177
This Delta deal was found by Cheapflights users on 4/8. 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 5/810:00 pm
ONT
- SJU
1 stop11h 01m
Delta
Deal found 4/8![Delta logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Fri 5/810:50 am
ONT
- SJU
3 stops29h 09m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$188
This American Airlines deal was found by Cheapflights users on 4/7. 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.
Mon 6/297:12 pm
ONT
- SJU
2 stops11h 27m
American Airlines
Deal found 4/7![American Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:26 am
ONT
- SJU
3 stops24h 57m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$212
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:00 pm
ONT
- SJU
1 stop11h 01m
Delta
Deal found 4/6![Delta logo]()
$217
This Trip.com deal was found by Cheapflights users on 4/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:12 am
ONT
- BQN
2 stops37h 31m
Frontier
Deal found 4/8![Frontier logo]()
$220
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:59 pm
ONT
- SJU
2 stops14h 35m
United Airlines
Deal found 4/6![United Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:44 pm
ONT
- SJU
3 stops26h 14m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$223
This Trip.com deal was found by Cheapflights users on 4/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:02 pm
ONT
- SJU
2 stops14h 29m
Frontier
Deal found 4/8![Frontier logo]()
$231
Find flight deals from Ontario to Puerto Rico
Keep the following information in mind while searching for Ontario to Puerto Rico flight deals. Data was last updated April 9, 2026.
Round-trip from | $349 (American Airlines) |
|---|---|
One-way from | $150 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $423 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Puerto Rico 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 April 9, 2026.
Use the filters below to find and compare flights from Ontario to Puerto Rico that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Wed 8/5
6:50 am-10:00 pm
2 stops12h 10m
San Juan Luis Munoz Marin Intl
Tue 8/11
5:15 am-2:05 pm
2 stops11h 50m
$452
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 4/25
9:55 pm-4:30 pm
1 stop15h 35m
San Juan Luis Munoz Marin Intl
Sun 5/3
5:00 am-3:10 pm
1 stop13h 10m
$468
OntarioAguadilla
ONT - BQN
ONTBQN
Ontario
Tue 4/21
6:05 am-11:09 pm
2 stops14h 04m
Aguadilla Borinquen
Fri 4/24
12:15 am-12:38 pm
2 stops15h 23m
$470
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Mon 4/20
8:45 pm-10:35 am
2 stops10h 50m
San Juan Luis Munoz Marin Intl
Fri 4/24
2:00 pm-11:05 pm
2 stops12h 05m
$470
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Sun 9/6
7:13 pm-3:42 pm
2 stops17h 29m
San Juan Luis Munoz Marin Intl
Sat 9/19
2:55 pm-9:59 pm
1 stop10h 04m
$524
Quickest round-trip
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Mon 5/4
5:00 am-5:38 pm
1 stop9h 38m
San Juan Luis Munoz Marin Intl
Wed 5/6
2:55 pm-9:58 pm
1 stop10h 03m
$524
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Tue 4/21
5:10 am-5:38 pm
1 stop9h 28m
San Juan Luis Munoz Marin Intl
Sat 4/25
7:00 am-5:47 pm
2 stops13h 47m
$560
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Wed 8/5
6:30 am-8:34 pm
1 stop11h 04m
San Juan Luis Munoz Marin Intl
Tue 8/11
2:20 pm-9:59 pm
1 stop10h 39m
$560
OntarioAguadilla
ONT - BQN
ONTBQN
Ontario
Sat 4/25
6:05 am-11:09 pm
2 stops14h 04m
Aguadilla Borinquen
Fri 5/1
12:15 am-8:36 pm
2 stops23h 21m
$732
Showing 1-10 of 27 resultsSorted by cheapest first
Best time to book a flight from Ontario to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Ontario with our price prediction graph.
ONT-SJU
ONT-BQN
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 Puerto Rico
ONT-PR0
ONT-SJU
ONT-BQN
What is the cheapest month to book a flight from Ontario to Puerto Rico?
Currently, October is the cheapest month in which you can book a flight from Ontario to Puerto Rico (average of $181). Flying from Ontario to Puerto Rico in February is currently the most expensive (average of $295). 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 Puerto Rico
Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated April 9, 2026.
Read through reviews of airlines operating flights from Ontario to Puerto Rico, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
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 Puerto Rico. 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 Ontario to Puerto Rico
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Puerto Rico by cabin class
Find flights from Ontario to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Puerto Rico flights
Browse other Ontario and Puerto Rico flight options. Last updated on April 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Ontario to Puerto Rico
Discover the top 6 airlines that operate flights from Ontario to Puerto Rico. 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 April 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$509 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$292 | Average$597 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$321 | Average$548 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$360 | Average$577 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$445 | Average$556 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$455 | Average$492 | FlexibilityNo cancel fee | On-time62% |