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San Juan

$84+ Cheap flights from Ontario (ONT) to San Juan

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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Ontario to San Juan are usually found in June or September, booked 59 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap 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 20, 2024.

Popular in

December

Cheapest in

June

Round-trip from

$240
(Trip.com)

One-way from

$85
(Frontier)
High demand for flights, 42% potential price rise
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Best time to find cheap flights, 35% potential price drop
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From Ontario to San Juan
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One-way flight from Ontario to San Juan
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Find flight deals from Ontario to San Juan

Cheapest flights from Ontario to San Juan
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 20, 2024.

This Trip.com deal was found by Cheapflights users on 11/19. 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.
Wed 12/117:45 amONT - SJU
2 stops24h 38mFrontier
Wed 12/1810:18 amSJU - ONT
2 stops17h 41mFrontier
Deal found 11/19$240
This eDestinos deal was found by Cheapflights users on 11/18. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/256:30 amONT - SJU
1 stop26h 09mMultiple Airlines
Tue 12/39:15 pmSJU - ONT
2 stops50h 44mMultiple Airlines
Deal found 11/18$380
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/77:10 amONT - SJU
1 stop12h 13mDelta
Tue 12/173:30 pmSJU - ONT
1 stop11h 32mDelta
Deal found 11/19$499
This American Airlines deal was found by Cheapflights users on 11/19. 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 12/1712:53 pmONT - SJU
2 stops19h 07mAmerican Airlines
Tue 12/245:18 amSJU - ONT
2 stops19h 19mAmerican Airlines
Deal found 11/19$549
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/106:10 amONT - SJU
1 stop11h 16mUnited Airlines
Tue 1/143:46 pmSJU - ONT
1 stop10h 11mUnited Airlines
Deal found 11/20$618
This Southwest deal was found by Cheapflights users on 11/19. 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 11/248:40 amONT - SJU
2 stops12h 05mSouthwest
Fri 11/296:10 amSJU - ONT
2 stops13h 45mSouthwest
Deal found 11/19$799
This Alaska Airlines deal was found by Cheapflights users on 11/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/76:00 amONT - SJU
2 stops29h 15mAlaska Airlines
Thu 12/124:05 pmSJU - ONT
2 stops31h 55mAlaska Airlines
Deal found 11/18$998

Find flights from Ontario to San Juan within your budget

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 12/11

7:45 am-12:23 pm

2 stops24h 38m

San Juan Luis Munoz Marin Intl

Wed 12/18

10:18 am-11:59 pm

2 stops17h 41m

$240

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 1/28

7:00 am-11:45 pm

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Tue 2/4

2:02 pm-10:52 pm

1 stop12h 50m

$354

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 2/5

2:44 pm-1:35 pm

2 stops18h 51m

San Juan Luis Munoz Marin Intl

Mon 2/10

6:00 am-6:24 pm

2 stops16h 24m

$424

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 1/22

6:15 am-10:22 pm

2 stops12h 07m

San Juan Luis Munoz Marin Intl

Mon 1/27

2:05 am-12:41 pm

2 stops14h 36m

$434

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 3/18

11:30 am-12:10 am

2 stops9h 40m

San Juan Luis Munoz Marin Intl

Wed 3/26

5:35 am-4:10 pm

2 stops13h 35m

$444

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 12/15

8:04 am-5:43 pm

2 stops29h 39m

San Juan Luis Munoz Marin Intl

Sat 1/4

8:10 pm-7:09 am

3 stops38h 59m

$524

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 12/7

6:00 am-3:15 pm

2 stops29h 15m

San Juan Luis Munoz Marin Intl

Thu 12/12

4:05 pm-8:00 pm

2 stops31h 55m

$998

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 12/31

4:48 pm-6:30 am

1 stop9h 42m

$84

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 1/8

12:48 pm-12:00 pm

2 stops19h 12m

$177

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 12/17

12:53 pm-5:40 pm

2 stops24h 47m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 14 results
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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.
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.

Travel insights for flights from Ontario to San Juan

Get recent, data-driven insights about flights from Ontario to San Juan including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ontario to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to San Juan. Price data was last updated on November 15, 2024.

To ensure you get the cheapest price possible for a flight from Ontario to San Juan, you should look to book at least 59 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.

What is the cheapest month to book a flight from Ontario to San Juan?

Currently, September is the cheapest month in which you can book a flight from Ontario to San Juan (average of $254). Flying from Ontario to San Juan in March is currently the most expensive (average of $335). 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.

What is the cheapest time of day to fly from ONT to SJU?

Find hourly flight availability from Ontario to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

One of the essential ways to save on airfare from Ontario to San Juan is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 14% on airfare.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 20, 2024.
Read through reviews of airlines operating flights from Ontario to San Juan, such as Frontier, Delta and Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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.

  • What airport do you fly from for flights from Ontario to San Juan?

    If you book a flight to San Juan from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to San Juan per day from 5 different airlines.

  • What are the cheapest airlines flying from Ontario to San Juan round-trip?

    Frontier, at $240, was found to be the cheapest airline from Ontario to San Juan.Alternate airlines to your destination round-trip include Delta and American Airlines. Frontier is currently priced 58% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ontario to San Juan one-way?

    $85 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $177 and $217, respectively.

  • Can I find deals for flights from Ontario to San Juan that include hotel bookings?

    Yes. In addition to deals on Ontario to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Juan.

  • Can I find deals for business class flights from Ontario to San Juan?

    Yes. Cheapflights offers flight deals from Ontario to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Ontario to San Juan (average of $254). Flying from Ontario to San Juan in March is currently the most expensive (average of $335). 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.

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Top 5 airlines flying from Ontario to San Juan

Discover the top 5 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$260Average$328FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$577FlexibilityNo cancel feeOn-time62%
DeltaCheapest$334Average$473FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$363Average$667FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$403Average$667FlexibilityNo cancel feeOn-time69%
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