$187+ Cheap flights from Ontario (ONT) to Luis Munoz Marin Intl (SJU)
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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Jun 9 — Jun 161
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl
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Cheapest flights from Ontario to Luis Munoz Marin IntlExplore the most affordable flight options available from Ontario to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.
Explore the most affordable flight options available from Ontario to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.
This Delta deal was found by Cheapflights users on 5/7. 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.
Mon 8/1710:00 pm
ONT
- SJU
1 stop12h 42m
Delta
Mon 8/242:59 pm
SJU
- ONT
1 stop9h 53m
Delta
Deal found 5/7![Delta logo]()
$374
This American Airlines deal was found by Cheapflights users on 5/6. 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 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 stops17h 24m
American Airlines
Deal found 5/6![American Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Sun 8/238:01 pm
ONT
- SJU
2 stops15h 37m
American Airlines
Fri 8/286:51 am
SJU
- ONT
2 stops14h 24m
American Airlines
Deal found 5/8![American Airlines logo]()
$425
This Delta deal was found by Cheapflights users on 5/10. 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 7/3110:00 pm
ONT
- SJU
1 stop10h 46m
Delta
Thu 8/62:11 pm
SJU
- ONT
2 stops12h 23m
Delta
Deal found 5/10![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 5/7. 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 8/105:00 am
ONT
- SJU
1 stop9h 38m
United Airlines
Tue 8/187:00 am
SJU
- ONT
2 stops16h 04m
United Airlines
Deal found 5/7![United Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:00 pm
ONT
- SJU
1 stop10h 46m
Delta
Mon 8/311:06 pm
SJU
- ONT
2 stops13h 38m
Delta
Deal found 5/6![Delta logo]()
$430
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:00 am
ONT
- SJU
2 stops9h 50m
Southwest
Mon 8/315:00 am
SJU
- ONT
2 stops12h 00m
Southwest
Deal found 5/6![Southwest logo]()
$434
This Southwest deal was found by Cheapflights users on 5/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:20 am
ONT
- SJU
2 stops10h 45m
Southwest
Mon 8/245:00 am
SJU
- ONT
2 stops13h 15m
Southwest
Deal found 5/7![Southwest logo]()
$452
This American Airlines deal was found by Cheapflights users on 5/7. 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 8/1011:59 pm
ONT
- SJU
1 stop11h 55m
American Airlines
Tue 8/183:44 pm
SJU
- ONT
1 stop10h 14m
American Airlines
Deal found 5/7![American Airlines logo]()
$454
This Priceline deal was found by Cheapflights users on 5/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:50 pm
ONT
- SJU
1 stop13h 08m
Multiple Airlines
Sat 8/226:25 am
SJU
- ONT
1 stop13h 23m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 5/6. 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 8/45:45 am
ONT
- SJU
1 stop11h 53m
United Airlines
Tue 8/187:00 am
SJU
- ONT
2 stops16h 04m
United Airlines
Deal found 5/6![United Airlines logo]()
$464
Best flights from Ontario to Luis Munoz Marin IntlDiscover carefully curated flight deals from Ontario to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 10, 2026.
Discover carefully curated flight deals from Ontario to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 10, 2026.
This Delta deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:00 pm
ONT
- SJU
1 stop10h 46m
Delta
Mon 8/242:59 pm
SJU
- ONT
1 stop9h 53m
Delta
Deal found 5/7![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:13 pm
ONT
- SJU
2 stops17h 29m
United Airlines
Tue 8/252:20 pm
SJU
- ONT
1 stop10h 39m
United Airlines
Deal found 5/6![United Airlines logo]()
$464
This Southwest deal was found by Cheapflights users on 5/8. 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.
Wed 7/221:05 pm
ONT
- SJU
1 stop8h 40m
Southwest
Wed 7/295:00 am
SJU
- ONT
1 stop10h 05m
Southwest
Deal found 5/8![Southwest logo]()
$603
This JetBlue deal was found by Cheapflights users on 5/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:41 pm
ONT
- SJU
1 stop13h 49m
JetBlue
Fri 5/299:52 am
SJU
- ONT
1 stop13h 55m
JetBlue
Deal found 5/6![JetBlue logo]()
$622
This United Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am
ONT
- SJU
1 stop11h 38m
United Airlines
Thu 10/82:00 pm
SJU
- ONT
1 stop9h 52m
United Airlines
Deal found 5/8![United Airlines logo]()
$564
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:00 am
ONT
- SJU
1 stop9h 38m
United Airlines
Thu 8/67:40 am
SJU
- ONT
1 stop18h 11m
United Airlines
Deal found 5/6![United Airlines logo]()
$644
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:05 am
ONT
- SJU
1 stop12h 12m
Delta
Fri 6/52:48 pm
SJU
- ONT
1 stop10h 00m
Delta
Deal found 5/5![Delta logo]()
$781
This JetBlue deal was found by Cheapflights users on 5/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:50 pm
ONT
- SJU
1 stop13h 08m
JetBlue
Mon 7/201:30 pm
SJU
- ONT
1 stop12h 05m
JetBlue
Deal found 5/8![JetBlue logo]()
$808
This United Airlines deal was found by Cheapflights users on 5/7. 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 8/55:45 am
ONT
- SJU
1 stop11h 53m
United Airlines
Thu 8/61:40 pm
SJU
- ONT
1 stop10h 02m
United Airlines
Deal found 5/7![United Airlines logo]()
$677
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Tue 7/285:45 am
ONT
- SJU
1 stop11h 53m
United Airlines
Sun 8/21:40 pm
SJU
- ONT
1 stop10h 02m
United Airlines
Deal found 5/7![United Airlines logo]()
$745
This United Airlines deal was found by Cheapflights users on 5/5. 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 9/15:45 am
ONT
- SJU
1 stop11h 53m
United Airlines
Sat 9/52:55 pm
SJU
- ONT
1 stop10h 04m
United Airlines
Deal found 5/5![United Airlines logo]()
$760
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Wed 7/85:00 am
ONT
- SJU
1 stop9h 38m
United Airlines
Tue 7/281:40 pm
SJU
- ONT
1 stop10h 02m
United Airlines
Deal found 5/5![United Airlines logo]()
$791
Last-minute flights from Ontario to Luis Munoz Marin IntlDiscover last-minute flight deals from Ontario to Luis Munoz Marin Intl. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Luis Munoz Marin Intl. Data last updated May 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/8. 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 5/159:24 am
ONT
- SJU
2 stops10h 39m
American Airlines
Fri 5/227:00 am
SJU
- ONT
1 stop18h 36m
American Airlines
Deal found 5/8![American Airlines logo]()
$632
This Southwest deal was found by Cheapflights users on 5/5. 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.
Sat 5/169:55 pm
ONT
- SJU
1 stop11h 30m
Southwest
Sat 6/135:00 am
SJU
- ONT
1 stop17h 15m
Southwest
Deal found 5/5![Southwest logo]()
$570
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/169:55 pm
ONT
- SJU
1 stop11h 30m
Southwest
Sat 5/2310:00 am
SJU
- ONT
1 stop15h 00m
Southwest
Deal found 5/6![Southwest logo]()
$623
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Mon 5/1811:29 pm
ONT
- SJU
1 stop9h 34m
American Airlines
Sat 5/235:30 am
SJU
- ONT
1 stop20h 08m
American Airlines
Deal found 5/5![American Airlines logo]()
$592
This United Airlines deal was found by Cheapflights users on 5/8. 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 5/246:30 am
ONT
- SJU
1 stop11h 04m
United Airlines
Fri 5/291:00 am
SJU
- ONT
2 stops14h 12m
United Airlines
Deal found 5/8![United Airlines logo]()
$588
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Sun 5/247:12 pm
ONT
- SJU
2 stops11h 27m
American Airlines
Fri 5/297:00 am
SJU
- ONT
1 stop18h 36m
American Airlines
Deal found 5/5![American Airlines logo]()
$614
This JetBlue deal was found by Cheapflights users on 5/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:41 pm
ONT
- SJU
1 stop13h 49m
JetBlue
Fri 5/299:52 am
SJU
- ONT
1 stop13h 55m
JetBlue
Deal found 5/6![JetBlue logo]()
$622
This American Airlines deal was found by Cheapflights users on 5/9. 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 5/275:44 am
ONT
- SJU
2 stops13h 15m
American Airlines
Thu 6/47:00 am
SJU
- ONT
1 stop18h 36m
American Airlines
Deal found 5/9![American Airlines logo]()
$539
This JetBlue deal was found by Cheapflights users on 5/5. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:41 pm
ONT
- SJU
1 stop13h 49m
JetBlue
Fri 6/59:52 am
SJU
- ONT
1 stop13h 55m
JetBlue
Deal found 5/5![JetBlue logo]()
$620
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Wed 6/105:45 am
ONT
- SJU
1 stop11h 53m
United Airlines
Mon 6/151:00 am
SJU
- ONT
2 stops14h 12m
United Airlines
Deal found 5/8![United Airlines logo]()
$627
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1310:30 am
ONT
- SJU
2 stops11h 45m
Southwest
Sat 6/205:00 am
SJU
- ONT
1 stop17h 15m
Southwest
Deal found 5/6![Southwest logo]()
$618
This Southwest deal was found by Cheapflights users on 5/5. 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 6/159:40 am
ONT
- SJU
1 stop11h 45m
Southwest
Sun 6/215:20 am
SJU
- ONT
1 stop13h 35m
Southwest
Deal found 5/5![Southwest logo]()
$625
One-way flights from Ontario to Luis Munoz Marin IntlSearch for one-way flight options from Ontario to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
Search for one-way flight options from Ontario to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This Delta deal was found by Cheapflights users on 5/8. 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 7/1410:00 pm
ONT
- SJU
1 stop12h 32m
Delta
Deal found 5/8![Delta logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Tue 6/236:00 am
ONT
- SJU
2 stops32h 33m
Frontier
Deal found 5/7![Frontier logo]()
$202
This United Airlines deal was found by Cheapflights users on 5/8. 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 8/85:00 am
ONT
- SJU
1 stop9h 38m
United Airlines
Deal found 5/8![United Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 5/276:00 am
ONT
- SJU
2 stops43h 01m
Frontier
Deal found 5/7![Frontier logo]()
$238
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Fri 6/56:30 pm
ONT
- SJU
2 stops14h 34m
United Airlines
Deal found 5/8![United Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 5/9. 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.
Mon 6/157:13 pm
ONT
- SJU
2 stops11h 26m
American Airlines
Deal found 5/9![American Airlines logo]()
$267
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Tue 5/194:52 pm
ONT
- SJU
2 stops13h 21m
American Airlines
Deal found 5/8![American Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 6/136:00 am
ONT
- SJU
2 stops39h 37m
Frontier
Deal found 5/9![Frontier logo]()
$288
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/297:13 pm
ONT
- SJU
2 stops11h 26m
American Airlines
Deal found 5/6![American Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:59 pm
ONT
- SJU
2 stops19h 00m
American Airlines
Deal found 5/6![American Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 5/9. 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 7/125:34 am
ONT
- SJU
1 stop15h 16m
American Airlines
Deal found 5/9![American Airlines logo]()
$302
This JetBlue deal was found by Cheapflights users on 5/5. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:41 pm
ONT
- SJU
1 stop13h 49m
JetBlue
Deal found 5/5![JetBlue logo]()
$304
Find flight deals from Ontario to Luis Munoz Marin Intl
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $374 (Delta) |
One-way from | $187 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $570 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Luis Munoz Marin Intl 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 May 10, 2026.
Use the filters below to find and compare flights from Ontario to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Fri 8/21
10:00 pm-11:46 am
1 stop10h 46m
San Juan Luis Munoz Marin Intl
Mon 8/24
2:59 pm-9:52 pm
1 stop9h 53m
$374
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Fri 8/21
7:13 pm-3:42 pm
2 stops17h 29m
San Juan Luis Munoz Marin Intl
Tue 8/25
2:20 pm-9:59 pm
1 stop10h 39m
$464
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Thu 10/1
6:00 am-8:38 pm
1 stop11h 38m
San Juan Luis Munoz Marin Intl
Thu 10/8
2:00 pm-8:52 pm
1 stop9h 52m
$564
Quickest round-trip
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Wed 7/22
1:05 pm-12:45 am
1 stop8h 40m
San Juan Luis Munoz Marin Intl
Wed 7/29
5:00 am-12:05 pm
1 stop10h 05m
$603
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Tue 5/26
10:41 pm-3:30 pm
1 stop13h 49m
San Juan Luis Munoz Marin Intl
Fri 5/29
9:52 am-8:47 pm
1 stop13h 55m
$622
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Fri 7/31
5:00 am-5:38 pm
1 stop9h 38m
San Juan Luis Munoz Marin Intl
Thu 8/6
7:40 am-10:51 pm
1 stop18h 11m
$644
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Wed 8/5
5:45 am-8:38 pm
1 stop11h 53m
San Juan Luis Munoz Marin Intl
Thu 8/6
1:40 pm-8:42 pm
1 stop10h 02m
$677
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Tue 7/28
5:45 am-8:38 pm
1 stop11h 53m
San Juan Luis Munoz Marin Intl
Sun 8/2
1:40 pm-8:42 pm
1 stop10h 02m
$745
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Tue 9/1
5:45 am-8:38 pm
1 stop11h 53m
San Juan Luis Munoz Marin Intl
Sat 9/5
2:55 pm-9:59 pm
1 stop10h 04m
$760
OntarioSan Juan
ONT - SJU
ONTSJU
Ontario
Thu 5/28
7:05 am-10:17 pm
1 stop12h 12m
San Juan Luis Munoz Marin Intl
Fri 6/5
2:48 pm-9:48 pm
1 stop10h 00m
$781
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Ontario to Luis Munoz Marin Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Luis Munoz Marin Intl in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Ontario with our price prediction graph.
ONT-SJU
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 San Juan Luis Munoz Marin Intl Airport
Prices
More
How far ahead should I book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?
The best time to book flights from Ontario to San Juan Luis Munoz Marin Intl Airport is 18 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport (average of $391). Flying from Ontario to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $655). 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.
How much does it cost to fly round-trip from Ontario to San Juan Luis Munoz Marin Intl Airport?
What’s the top layover airport for flights from Ontario to San Juan Luis Munoz Marin Intl Airport?
Share of 1-stop round-trip flights from Ontario to San Juan Luis Munoz Marin Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Baltimore (BWI) – chosen by Cheapflights users on 50% of 1-stop itineraries from Ontario to San Juan Luis Munoz Marin Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Ontario to San Juan Luis Munoz Marin Intl Airport?
Average round-trip fare for 1-stop flights from Ontario to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $584.
What’s the fastest layover option from Ontario to San Juan Luis Munoz Marin Intl Airport?
Shortest average travel time for 1-stop one-way flights from Ontario to San Juan Luis Munoz Marin Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 9h 28m.
Which airport typically offers the quickest layover for flights from Ontario to San Juan Luis Munoz Marin Intl Airport?
Average layover duration for 1-stop one-way flights from Ontario to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 03m.
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated May 10, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Ontario to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
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 Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Luquillo
Rio Grande
Dorado
Humacao
Bayamón
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Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 10, 2026.
Ontario and Luis Munoz Marin Intl flights
Browse other Ontario and Luis Munoz Marin Intl flight options. Last updated on May 10, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on May 10, 2026.
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Top 6 airlines flying from Ontario to Luis Munoz Marin Intl
Discover the top 6 airlines that operate flights from Ontario to Luis Munoz Marin Intl. 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 May 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$467 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$292 | Average$552 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$321 | Average$555 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$360 | Average$577 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$419 | Average$555 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$455 | Average$561 | FlexibilityNo cancel fee | On-time62% |