$160+ Cheap flights from San Juan to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ONT
Dec 5 — Dec 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Juan to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Juan to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Juan to OntarioExplore the most affordable flight options available from San Juan to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
Explore the most affordable flight options available from San Juan to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:13 am -
2 stops24h 31m
Mon 12/78:44 am -
2 stops21h 53m
Deal found 11/5![Frontier logo]()
$409
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:26 pm -
2 stops25h 12m
Sat 11/1411:52 am -
2 stops20h 44m
Deal found 10/31![Frontier logo]()
$449
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:42 am -
2 stops17h 41m
Tue 12/12:00 pm -
2 stops16h 40m
Deal found 10/31![Frontier logo]()
$463
This Mytrip deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:19 pm -
2 stops19h 01m
Sat 12/126:00 am -
2 stops15h 58m
Deal found 11/1![Frontier logo]()
$477
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:21 pm -
2 stops23h 02m
Tue 12/12:00 pm -
2 stops16h 40m
Deal found 11/2![Frontier logo]()
$492
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/236:23 am -
1 stop16h 29m
Tue 12/17:45 pm -
2 stops13h 19m
Deal found 10/31![American Airlines logo]()
$494
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/203:54 am -
2 stops18h 21m
Wed 12/3010:48 pm -
2 stops20h 56m
Deal found 11/4![Frontier logo]()
$495
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:42 am -
2 stops17h 41m
Sat 12/511:00 am -
2 stops19h 37m
Deal found 10/31![Frontier logo]()
$514
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:59 am -
2 stops19h 39m
Sun 11/158:35 pm -
2 stops24h 24m
Deal found 10/31![Frontier logo]()
$531
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:59 am -
2 stops19h 39m
Mon 11/168:03 pm -
2 stops18h 18m
Deal found 11/3![Frontier logo]()
$537
Best flights from San Juan to OntarioDiscover carefully curated flight deals from San Juan to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from San Juan to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/236:23 am -
1 stop16h 29m
Tue 12/17:45 pm -
2 stops13h 19m
Deal found 10/31![American Airlines logo]()
$494
This Mytrip deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/266:31 pm -
1 stop15h 49m
Sat 12/126:00 am -
2 stops15h 58m
Deal found 11/1![Frontier logo]()
$566
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/37:40 am -
2 stops16h 58m
Mon 12/76:40 pm -
2 stops14h 52m
Deal found 11/2![United Airlines logo]()
$594
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 3/2412:20 am -
1 stop12h 22m
Mon 3/2910:40 pm -
1 stop14h 18m
Deal found 11/3![American Airlines logo]()
$553
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 3/92:21 pm -
1 stop10h 11m
Wed 3/176:00 am -
1 stop11h 24m
Deal found 11/1![United Airlines logo]()
$634
This Booking.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:58 pm -
1 stop14h 22m
Sat 12/56:00 am -
2 stops15h 58m
Deal found 10/31![Frontier logo]()
$706
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/193:46 pm -
1 stop9h 54m
Mon 11/236:00 am -
2 stops14h 36m
Deal found 11/3![United Airlines logo]()
$662
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:42 am -
2 stops17h 41m
Tue 11/242:01 pm -
2 stops18h 59m
Deal found 11/5![Frontier logo]()
$731
This United Airlines deal was found by Cheapflights users on 11/4. 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 5/31:40 pm -
1 stop9h 40m
Sun 5/95:00 am -
1 stop9h 38m
Deal found 11/4![United Airlines logo]()
$705
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/182:21 pm -
1 stop10h 30m
Sun 11/226:00 am -
1 stop11h 24m
Deal found 11/3![United Airlines logo]()
$710
Last-minute flights from San Juan to OntarioDiscover last-minute flight deals from San Juan to Ontario. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from San Juan to Ontario. Data last updated November 5, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:52 pm -
2 stops21h 50m
Sun 11/222:01 pm -
2 stops18h 59m
Deal found 10/31![Frontier logo]()
$550
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:26 pm -
2 stops25h 12m
Sat 11/1411:52 am -
2 stops20h 44m
Deal found 10/31![Frontier logo]()
$449
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:59 am -
2 stops19h 39m
Sun 11/158:35 pm -
2 stops24h 24m
Deal found 10/31![Frontier logo]()
$531
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:59 am -
2 stops19h 39m
Mon 11/168:03 pm -
2 stops18h 18m
Deal found 11/3![Frontier logo]()
$537
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:42 am -
2 stops17h 41m
Tue 12/12:00 pm -
2 stops16h 40m
Deal found 10/31![Frontier logo]()
$463
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:42 am -
2 stops17h 41m
Sat 12/511:00 am -
2 stops19h 37m
Deal found 10/31![Frontier logo]()
$514
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/236:23 am -
1 stop16h 29m
Tue 12/110:30 pm -
1 stop18h 42m
Deal found 10/31![American Airlines logo]()
$533
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:21 pm -
2 stops23h 02m
Tue 12/12:00 pm -
2 stops16h 40m
Deal found 11/2![Frontier logo]()
$492
This Mytrip deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:19 pm -
2 stops19h 01m
Sat 12/126:00 am -
2 stops15h 58m
Deal found 11/1![Frontier logo]()
$477
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/31:18 pm -
2 stops13h 35m
Tue 12/152:22 pm -
2 stops16h 22m
Deal found 10/31![American Airlines logo]()
$494
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/203:54 am -
2 stops18h 21m
Wed 12/3010:48 pm -
2 stops20h 56m
Deal found 11/4![Frontier logo]()
$495
One-way flights from San Juan to OntarioSearch for one-way flight options from San Juan to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from San Juan to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 1/152:41 am -
2 stops25h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/217:58 pm -
1 stop14h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$178
This Priceline deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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.
Wed 11/257:58 pm -
1 stop14h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$208
This Mytrip deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:01 am -
2 stops23h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$212
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/95:01 am -
2 stops21h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$221
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:59 am -
2 stops22h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$223
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:59 am -
2 stops19h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$224
This OneTravel deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:01 am -
2 stops21h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$230
Find flight deals from San Juan to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Ontario (ONT). 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 November 5, 2026.
Round-trip from | $409 (Mytrip) |
|---|---|
One-way from | $160 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $546 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Juan to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from San Juan to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Fri 1/15
2:41 am-12:05 am
2 stops25h 24m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$160
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Wed 12/9
3:04 pm-11:57 pm
2 stops12h 53m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$257
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Thu 12/3
3:46 pm-9:59 pm
1 stop10h 13m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$297
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Wed 12/9
2:21 pm-9:11 pm
1 stop10h 50m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$297
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Thu 12/24
6:35 am-12:42 pm
1 stop10h 07m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$297
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Fri 1/15
2:05 am-5:35 pm
2 stops19h 30m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$297
Quickest round-trip
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Sat 11/14
3:46 pm-9:40 pm
1 stop9h 54m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$305
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Mon 3/22
2:48 pm-7:07 am
2 stops19h 19m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$314
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Fri 1/22
8:25 am-6:50 pm
1 stop14h 25m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$346
San JuanOntario
SJU San Juan Luis Munoz Marin Intl - ONT Ontario
SJUONT
San Juan Luis Munoz Marin Intl
Wed 11/11
3:46 pm-9:40 pm
1 stop9h 54m
Ontario
Wed 12/31
12:00 am-4:00 am
Nonstop0h 00m
$388
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from San Juan to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from San Juan with our price prediction graph.
PR1-ONT
SJU-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Juan to Ontario
PR1-ONT
SJU-ONT
What is the cheapest month to book a flight from San Juan to Ontario?
Currently, January is the cheapest month in which you can book a flight from San Juan to Ontario (average of $288). Flying from San Juan to Ontario in July is currently the most expensive (average of $1,150). 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 San Juan to Ontario?
Airfare is below average for this route at the moment.
San Juan to Ontario flights typically cost between $465 and $816 in December.The cheapest round-trip price found within the last 5 days was $409 on Frontier (Dec 4-Dec 7).
How far ahead should I book a flight from San Juan to Ontario?
The best time to book flights from San Juan to Ontario is 20 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.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated November 5, 2026.
Read through reviews of airlines operating flights from San Juan to Ontario, such as Southwest and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from San Juan to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Popular flights
Alternative routes for San Juan to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Juan to Ontario by cabin class
Find flights from San Juan to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.
San Juan and Ontario flights
Browse other San Juan and Ontario flight options. Last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from San Juan to Ontario
Discover the top 2 airlines that operate flights from San Juan to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$389 | Average$435 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$440 | Average$665 | FlexibilityNo cancel fee | On-time71% |