ONT - SJU

$142 Find Cheap Flights from Ontario to San Juan - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$343
Typical prices: $474-$686
Frontier
Fri 11/30Sat 12/15
ONT - SJU • 2 stops
Cheapest one-way
$142
Typical prices: $219-$353
Frontier
Sat 1/6
ONT - SJU • 2 stops
Nonstop flights
There are currently no direct flights between Ontario and San Juan Luis Munoz Marin Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 16 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $516 (round-trip)
Shortest trip • 9h 44m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Juan Luis Munoz Marin Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to San Juan (ONT-SJU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to San Juan

Mon, Nov 30 - Tue, Dec 15
Frontier Logo
2:01 pm - 1:58 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
31h 57m2 stops Las Vegas Harry Reid Intl Miami
Frontier Logo
5:01 am - 10:17 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
21h 16m2 stops Atlanta Hartsfield-Jackson Denver Intl
$343Frontier
Wed, Dec 9 - Wed, Dec 16
Frontier Logo
8:44 am - 10:37 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
21h 53m2 stops Las Vegas Harry Reid Intl Orlando
Frontier Logo
5:01 am - 8:05 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
31h 04m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$357Frontier
Sat, Feb 6 - Sat, Feb 13
American Airlines Logo
7:00 am - 9:54 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
10h 54m1 stop Dallas/Fort Worth
American Airlines Logo
1:20 am - 1:26 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
16h 06m1 stop Dallas/Fort Worth
$504American Airlines
Sun, Jan 24 - Sat, Jan 30
American Airlines Logo
6:56 pm - 2:22 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
15h 26m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
11:28 am - 11:13 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
15h 45m2 stops Miami Dallas/Fort Worth
$504American Airlines
Thu, Feb 18 - Tue, Feb 23
United Airlines Logo
6:00 am - 9:24 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
11h 24m1 stop Houston George Bush Intcntl
United Airlines Logo
3:46 pm - 9:59 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
10h 13m1 stop Houston George Bush Intcntl
$504United Airlines
Fri, Dec 4 - Fri, Dec 11
United Airlines Logo
6:40 pm - 11:50 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
13h 10m2 stops San Francisco Newark
United Airlines Logo
2:05 am - 12:34 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
14h 29m2 stops Newark Denver Intl
$504United Airlines
Thu, Feb 18 - Tue, Feb 23
Southwest Logo
8:00 am - 11:45 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
11h 45m2 stops Austin Bergstrom Orlando
Southwest Logo
5:35 am - 2:10 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
12h 35m2 stops Orlando Austin Bergstrom
$616Southwest
Fri, Feb 26 - Sun, Mar 7
Southwest Logo
9:05 am - 11:45 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
10h 40m2 stops Nashville Intl Orlando
Southwest Logo
5:35 am - 1:50 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
12h 15m2 stops Orlando Denver Intl
$670Southwest
Mon, Dec 28 - Tue, Jan 12
Delta Logo
10:35 pm - 11:59 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
9h 24m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:48 pm - 9:44 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
11h 56m1 stop Atlanta Hartsfield-Jackson
$1,478Delta
Tue, Dec 29 - Tue, Jan 12
Delta Logo
10:35 pm - 11:59 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
9h 24m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:48 pm - 9:44 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
11h 56m1 stop Atlanta Hartsfield-Jackson
$1,478Delta
Booking Insights

Price, demand and travel trends for Ontario to San Juan Luis Munoz Marin Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to San Juan Luis Munoz Marin Intl Airport?

Round-trip flights from Ontario to San Juan Luis Munoz Marin Intl Airport typically range from $474 to $686. The lowest price found in the past 5 days was $343, on Frontier.

What's the cheapest day of the week to fly from Ontario to San Juan Luis Munoz Marin Intl Airport?

Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Ontario to San Juan Luis Munoz Marin Intl Airport. It’s 12% cheaper than the average day, while Friday is the most expensive, with prices 28% higher.

What’s the cheapest month to fly from Ontario to San Juan Luis Munoz Marin Intl Airport?

•October is the cheapest month to fly from Ontario to San Juan Luis Munoz Marin Intl Airport at $456 round-trip.
•November ($941) and July ($666) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 106% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Ontario to San Juan Luis Munoz Marin Intl Airport the cheapest?

Flights from Ontario to San Juan Luis Munoz Marin Intl Airport are cheapest 16 weeks before departure. Booking in this window typically costs about 41% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Ontario to San Juan Luis Munoz Marin Intl Airport flights

Low season

October

Cheapest flight

$142
Beat the crowds with an average 41% drop in travelers.
The most popular month to fly with an average 59% increase in travelers.
One-way flight from Ontario to San Juan Luis Munoz Marin Intl Airport

When to book flights from Ontario to San Juan

Are your dates flexible? Find out the best times to travel from Ontario to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to San Juan Luis Munoz Marin Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to San Juan Luis Munoz Marin Intl Airport?

    Two cabin classes are available on flights from Ontario to San Juan Luis Munoz Marin Intl Airport:

    • Economy Class
    • First Class

  • How long is a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?

    A nonstop flight from Ontario to San Juan Luis Munoz Marin Intl Airport takes about 00m, covering 3,334 miles.

  • Do I need a passport to fly from Ontario to San Juan Luis Munoz Marin Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Ontario to San Juan Luis Munoz Marin Intl Airport flight?

    Round-trip flights from Ontario to San Juan Luis Munoz Marin Intl Airport range from $474 to $686, with an average of $561 over the past 12 months. Anything below $474 counts as a good deal.

  • How expensive are last-minute Ontario to San Juan Luis Munoz Marin Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 31% above the $561 route average. Book 16 weeks before departure for the lowest fares.

  • How are flight prices from Ontario to San Juan Luis Munoz Marin Intl Airport looking right now?

    One-way fares from Ontario to San Juan Luis Munoz Marin Intl Airport are currently in line with typical prices for this route. Average one-way fares are about $291.

  • What car rental options are available at San Juan Luis Munoz Marin Intl Airport (SJU)?

    San Juan Luis Munoz Marin Intl Airport (SJU) hosts 5 major car rental companies, with daily rates averaging $41 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • U-Save
    • Hertz
    • Payless
    • Europcar

  • Which airports can I use when flying from Ontario to San Juan Luis Munoz Marin Intl Airport?

    Flights from Ontario to San Juan Luis Munoz Marin Intl Airport usually depart from Ontario (ONT) and arrive at San Juan Luis Munoz Marin Intl (SJU).

  • Which airports do connecting flights from Ontario to San Juan Luis Munoz Marin Intl Airport pass through?

    One-stop flights from Ontario to San Juan Luis Munoz Marin Intl Airport most commonly connect through:

    • Denver Intl (DEN) - 23% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 20% of one-stop connections
    • Dallas/Fort Worth (DFW) - 19% of one-stop connections
    • Houston George Bush Intcntl (IAH) - 17% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to San Juan Luis Munoz Marin Intl Airport?

    Yes. Flexible dates can save you up to 31% on flights from Ontario to San Juan Luis Munoz Marin Intl Airport. Sunday is the cheapest departure day at $499 round-trip on average, while Friday is the most expensive at $723, a difference of $224.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different layover airport from Ontario to San Juan Luis Munoz Marin Intl Airport?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 9h 44m, compared with 10h 29m via Houston George Bush Intcntl (IAH) and 10h 44m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Ontario and San Juan Luis Munoz Marin Intl Airport?

    San Juan Luis Munoz Marin Intl Airport is 4 hours ahead of Ontario (Atlantic Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Juan Luis Munoz Marin Intl Airport?

    Some of the most popular sights in San Juan Luis Munoz Marin Intl Airport are Viejo San Juan, Puerto Rico Convention Center and Condado Beach. These are among the most viewed places in San Juan Luis Munoz Marin Intl Airport on KAYAK.

Your guide to booking Ontario to San Juan Luis Munoz Marin Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Friday. On this route, Sunday flights average $499, about $224 less than Friday fares (31% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 16 weeks before you fly. On this route, that window historically saves about 41% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Ontario to San Juan Luis Munoz Marin Intl Airport trip for October. Fares historically average $456 round-trip in that month - typically $485 less than the most expensive month, which is November (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Juan Luis Munoz Marin Intl Airport.

    • Coral by The Sea Hotel
    • San Juan Airport Hotel
    • Hampton Inn & Suites by Hilton San Juan

More options for your flight from Ontario to San Juan

Complete your trip to San Juan with a hotel stay or car rental