$179+ Cheap flights from Ontario (ONT) to San Juan
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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
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 Ontario to San Juan 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 Ontario to San Juan
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to San JuanExplore the most affordable flight options available from Ontario to San Juan. 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 Ontario to San Juan. 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 11/2. 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 12/12:00 pm -
2 stops16h 40m
Tue 12/85:01 am -
2 stops21h 16m
Deal found 11/2![Frontier logo]()
$331
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 12/22:00 pm -
2 stops16h 40m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/4![Frontier logo]()
$332
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.
Mon 12/711:00 am -
2 stops19h 37m
Tue 12/155:01 am -
2 stops21h 16m
Deal found 11/2![Frontier logo]()
$333
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.
Wed 12/22:00 pm -
2 stops19h 46m
Tue 12/811:48 am -
2 stops23h 56m
Deal found 11/1![Frontier logo]()
$362
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.
Fri 12/42:00 pm -
2 stops16h 37m
Tue 12/85:01 am -
2 stops21h 16m
Deal found 11/1![Frontier logo]()
$366
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.
Tue 12/86:00 am -
2 stops15h 58m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/1![Frontier logo]()
$387
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.
Sun 12/611:00 am -
2 stops22h 29m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/3![Frontier logo]()
$400
Best flights from Ontario to San JuanDiscover carefully curated flight deals from Ontario to San Juan 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 Ontario to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Sat 11/145:07 pm -
2 stops13h 08m
Wed 11/183:55 pm -
2 stops23h 21m
Deal found 10/30![Frontier logo]()
$493
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/179:15 am -
2 stops11h 20m
Thu 1/215:35 am -
2 stops12h 35m
Deal found 11/3![Southwest logo]()
$504
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.
Wed 1/136:00 am -
1 stop11h 24m
Mon 2/18:25 am -
2 stops16h 35m
Deal found 11/2![United Airlines logo]()
$538
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:00 am -
1 stop13h 16m
Wed 11/181:53 pm -
1 stop12h 19m
Deal found 10/30![American Airlines logo]()
$610
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.
Tue 1/196:00 am -
1 stop11h 24m
Tue 1/262:21 pm -
1 stop10h 39m
Deal found 11/2![United Airlines logo]()
$594
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.
Mon 1/257:00 am -
1 stop10h 00m
Sat 1/303:46 pm -
1 stop10h 29m
Deal found 11/1![United Airlines logo]()
$594
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.
Fri 1/297:00 am -
1 stop10h 00m
Tue 2/93:46 pm -
1 stop10h 29m
Deal found 11/1![United Airlines logo]()
$594
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.
Tue 12/85:00 am -
2 stops15h 36m
Thu 12/102:21 pm -
1 stop10h 50m
Deal found 11/3![United Airlines logo]()
$614
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 11/265:00 am -
1 stop9h 25m
Sat 12/57:40 am -
2 stops13h 56m
Deal found 11/3![United Airlines logo]()
$654
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.
Fri 1/221:42 pm -
2 stops12h 33m
Fri 1/297:40 am -
2 stops13h 55m
Deal found 11/1![United Airlines logo]()
$676
Last-minute flights from Ontario to San JuanDiscover last-minute flight deals from Ontario to San Juan. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to San Juan. Data last updated November 5, 2026 and is based on user searches.
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 12/12:00 pm -
2 stops16h 40m
Tue 12/85:01 am -
2 stops21h 16m
Deal found 11/2![Frontier logo]()
$331
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 12/22:00 pm -
2 stops16h 40m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/4![Frontier logo]()
$332
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.
Wed 12/22:00 pm -
2 stops19h 46m
Tue 12/811:48 am -
2 stops23h 56m
Deal found 11/1![Frontier logo]()
$362
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.
Fri 12/42:00 pm -
2 stops16h 37m
Tue 12/85:01 am -
2 stops21h 16m
Deal found 11/1![Frontier logo]()
$366
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.
Sun 12/611:00 am -
2 stops22h 29m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/3![Frontier logo]()
$400
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.
Mon 12/711:00 am -
2 stops19h 37m
Tue 12/155:01 am -
2 stops21h 16m
Deal found 11/2![Frontier logo]()
$333
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.
Tue 12/86:00 am -
2 stops15h 58m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/1![Frontier logo]()
$387
One-way flights from Ontario to San JuanSearch for one-way flight options from Ontario to San Juan. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Ontario to San Juan. 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 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:00 pm -
2 stops16h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$179
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.
Sat 12/511:00 am -
2 stops19h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$182
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/146:30 am -
2 stops15h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$200
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:30 am -
2 stops22h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$206
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.
Wed 11/185:07 pm -
2 stops21h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$218
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 11/105:33 pm -
2 stops20h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$219
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.
Mon 11/98:03 pm -
2 stops24h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 1/96:09 am -
2 stops15h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Frontier logo]()
$230
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/136:30 am -
2 stops15h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$240
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 11/175:07 pm -
2 stops13h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$243
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:45 pm -
2 stops10h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![American Airlines logo]()
$247
Find flight deals from Ontario to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to San Juan (PR1). 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 | $331 (Mytrip) |
|---|---|
One-way from | $179 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $925 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to San Juan 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 Ontario to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Wed 11/18
10:35 am-6:21 pm
2 stops27h 46m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$222
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Sat 1/9
6:09 am-1:39 am
2 stops15h 30m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$230
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Tue 1/19
6:00 am-9:24 pm
1 stop11h 24m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Wed 3/3
6:00 am-9:24 pm
1 stop11h 24m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Sat 2/27
6:00 am-9:24 pm
1 stop11h 24m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Mon 2/1
7:00 am-9:00 pm
1 stop10h 00m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Wed 4/21
5:00 am-5:38 pm
1 stop9h 38m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Sat 12/12
4:17 pm-11:50 am
2 stops15h 33m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Fri 4/30
6:00 am-8:38 pm
1 stop11h 38m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$297
OntarioSan Juan
ONT Ontario - SJU San Juan Luis Munoz Marin Intl
ONTSJU
Ontario
Wed 1/13
6:00 am-9:24 pm
1 stop11h 24m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$307
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Ontario to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Ontario with our price prediction graph.
ONT-PR1
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
ONT-PR1
ONT-SJU
What is the cheapest month to book a flight from Ontario to San Juan?
Currently, August is the cheapest month in which you can book a flight from Ontario to San Juan (average of $456). Flying from Ontario to San Juan in November is currently the most expensive (average of $925). 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?
Airfare is below average for this route at the moment.
Ontario to San Juan flights typically cost between $655 and $1,255 in December.The cheapest round-trip price found within the last 5 days was $331 on Frontier (Dec 1-Dec 8).
How far ahead should I book a flight from Ontario to San Juan?
To ensure you get the cheapest price possible for a flight from Ontario to San Juan, you should look to book at least 55 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated November 5, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to San Juan. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to San Juan. 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
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Juan by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to San Juan by cabin class
Find flights from Ontario to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and San Juan flights
Browse other Ontario and San Juan flight options. Last updated on November 5, 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 November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to San Juan
Discover the top 4 airlines that operate flights from Ontario to San Juan. 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$168 | Average$552 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$558 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$382 | Average$565 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$419 | Average$562 | FlexibilityNo cancel fee | On-time63% |