SJU - ONT

$168 Find Cheap Flights from San Juan to Ontario - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$386
Typical prices: $392-$558
Frontier
Tue 10/30Sun 11/4
SJU - ONT • 2 stops
Cheapest one-way
$165
Typical prices: $217-$352
Frontier
Wed 11/21
SJU - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between San Juan Luis Munoz Marin Intl Airport and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
23 weeks
in advance
Our data shows that travelers who book at least 23 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 37% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Baltimore/Washington (BWI)
Cheapest • Avg $433 (round-trip)
Denver Intl (DEN)
Shortest trip • 9h 35m (one-way)
Insights
Insights
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

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

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

Recent round-trip flight deals from San Juan to Ontario

Fri, Oct 30 - Wed, Nov 4
Frontier Logo
3:59 pm - 10:42 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
21h 43m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
11:52 am - 10:15 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
18h 23m2 stops Denver Intl Orlando
$386Frontier
Fri, Oct 23 - Tue, Nov 3
Frontier Logo
4:39 pm - 10:29 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
20h 50m2 stops Tampa Denver Intl
Frontier Logo
11:52 am - 10:15 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
18h 23m2 stops Denver Intl Orlando
$422Frontier
Fri, Nov 13 - Mon, Nov 16
Frontier Logo
3:59 pm - 10:42 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
22h 43m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
8:03 pm - 6:21 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
18h 18m2 stops Dallas/Fort Worth Orlando
$444Frontier
Wed, Nov 11 - Mon, Nov 16
Frontier Logo
4:52 pm - 10:35 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
21h 43m2 stops Miami Denver Intl
Frontier Logo
8:03 pm - 6:21 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
18h 18m2 stops Dallas/Fort Worth Orlando
$449Frontier
Thu, Oct 22 - Thu, Oct 29
American Airlines Logo
6:20 am - 6:43 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
15h 23m2 stops Miami Phoenix Sky Harbor Intl
American Airlines Logo
7:34 pm - 9:46 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
11h 12m2 stops Phoenix Sky Harbor Intl Miami
$454American Airlines
Sat, Oct 24 - Sun, Nov 1
American Airlines Logo
6:30 am - 6:44 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
15h 14m2 stops Miami Dallas/Fort Worth
American Airlines Logo
7:00 am - 12:16 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
13h 16m1 stop Dallas/Fort Worth
$454American Airlines
Sat, Oct 24 - Sun, Nov 1
American Airlines Logo
6:30 am - 6:44 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
15h 14m2 stops Miami Dallas/Fort Worth
American Airlines Logo
11:59 pm - 4:09 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
12h 10m1 stop Dallas/Fort Worth
$454American Airlines
Wed, Oct 21 - Sun, Nov 1
United Airlines Logo
2:55 pm - 9:59 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
10h 04m1 stop Houston George Bush Intcntl
United Airlines Logo
5:00 am - 6:25 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
9h 25m1 stop Denver Intl
$554United Airlines
Thu, Jan 28 - Mon, Feb 1
United Airlines Logo
7:40 am - 5:47 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
14h 07m2 stops Houston George Bush Intcntl San Francisco
United Airlines Logo
5:00 am - 6:25 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
9h 25m1 stop Denver Intl
$554United Airlines
Fri, Oct 23 - Mon, Oct 26
United Airlines Logo
2:00 pm - 8:58 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
9h 58m1 stop Denver Intl
United Airlines Logo
5:00 am - 5:25 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
9h 25m1 stop Denver Intl
$554United Airlines
Booking Insights

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

Round-trip flights from San Juan Luis Munoz Marin Intl Airport to Ontario typically range from $392 to $558. The lowest price found in the past 5 days was $386, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to Ontario. It’s 16% cheaper than the average day, while Monday is the most expensive, with prices 49% higher.

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

•January is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Ontario at $288 round-trip.
•July ($1,150) and March ($889) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 299% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from San Juan Luis Munoz Marin Intl Airport to Ontario are cheapest 23 weeks before departure. Booking in this window typically costs about 54% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

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

Low season

February

Cheapest flight

$165
Beat the crowds with an average 83% drop in travelers.
The most popular month to fly with an average 480% increase in travelers.
One-way flight from San Juan Luis Munoz Marin Intl Airport to Ontario

When to book flights from San Juan to Ontario

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

Your San Juan Luis Munoz Marin Intl Airport to Ontario 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 San Juan Luis Munoz Marin Intl Airport to Ontario?

    Only Economy Class is available on flights from San Juan Luis Munoz Marin Intl Airport to Ontario.

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

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

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

    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 San Juan Luis Munoz Marin Intl Airport to Ontario flight?

    Round-trip flights from San Juan Luis Munoz Marin Intl Airport to Ontario range from $392 to $558, with an average of $457 over the past 12 months. Anything below $392 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 59% above the $457 route average. Book 23 weeks before departure for the lowest fares.

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

    One-way fares from San Juan Luis Munoz Marin Intl Airport to Ontario are currently lower than usual. Average one-way flight prices are about $241, which is 17% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

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

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

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

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

    • New York John F Kennedy Intl (JFK) - 38% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 20% of one-stop connections
    • Dallas/Fort Worth (DFW) - 16% of one-stop connections
    • Charlotte Douglas (CLT) - 10% of one-stop connections

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

    Yes. Flexible dates can save you up to 44% on flights from San Juan Luis Munoz Marin Intl Airport to Ontario. Friday is the cheapest departure day at $388 round-trip on average, while Monday is the most expensive at $685, a difference of $297.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 9h 35m, compared with 10h 37m via Atlanta Hartsfield-Jackson (ATL) and 10h 48m via Houston George Bush Intcntl (IAH).

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

    Ontario is 3 hours behind San Juan Luis Munoz Marin Intl Airport (Pacific Time vs Atlantic Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking San Juan Luis Munoz Marin Intl Airport to Ontario 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 Friday departure and avoid flying on Monday. On this route, Friday flights average $388, about $297 less than Monday fares (43% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 23 weeks before you fly. On this route, that window historically saves about 54% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Juan Luis Munoz Marin Intl Airport to Ontario trip for January. Fares historically average $288 round-trip in that month - typically $862 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • La Quinta Inn & Suites by Wyndham Ontario Airport
    • Ontario Airport Inn

More options for your flight from San Juan to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario