SJU - ONT

$144 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
$466
Typical prices: $387-$537
Frontier
Tue 12/11Thu 12/13
SJU - ONT • 2 stops
Cheapest one-way
$144
Typical prices: $228-$382
Frontier
Sun 12/9
SJU - ONT • 2 stops
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 43% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 34% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Baltimore/Washington (BWI)
Cheapest • Avg $433 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 10h 39m (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, Dec 11 - Sun, Dec 13
Frontier Logo
6:25 am - 7:44 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
29h 19m2 stops Fort Lauderdale Dallas/Fort Worth
Frontier Logo
7:26 pm - 1:29 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
14h 03m2 stops San Francisco Atlanta Hartsfield-Jackson
$466Frontier
Tue, Nov 24 - Mon, Nov 30
Frontier Logo
7:58 pm - 6:20 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
14h 22m1 stop Dallas/Fort Worth
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
$469Frontier
Mon, Dec 7 - Mon, Dec 14
American Airlines Logo
5:17 pm - 9:42 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
20h 25m1 stop Dallas/Fort Worth
American Airlines Logo
10:30 pm - 9:12 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
18h 42m1 stop Charlotte Douglas
$504American Airlines
Fri, Dec 11 - Sun, Dec 13
American Airlines Logo
7:00 am - 10:53 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
19h 53m1 stop Charlotte Douglas
American Airlines Logo
11:59 pm - 4:27 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
12h 28m1 stop Dallas/Fort Worth
$504American Airlines
Fri, Dec 11 - Sun, Dec 13
United Airlines Logo
8:05 am - 8:38 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
16h 33m2 stops Washington, D.C. Dulles Intl San Francisco
United Airlines Logo
5:00 am - 6:25 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
9h 25m1 stop Denver Intl
$504United Airlines
Thu, Dec 10 - Tue, Dec 15
American Airlines Logo
5:17 pm - 9:42 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
20h 25m1 stop Dallas/Fort Worth
American Airlines Logo
1:02 pm - 10:44 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
17h 42m2 stops Dallas/Fort Worth Miami
$504American Airlines
Thu, Dec 10 - Tue, Dec 15
American Airlines Logo
6:28 am - 3:35 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
13h 07m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
1:23 pm - 10:44 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
17h 21m2 stops Phoenix Sky Harbor Intl Miami
$504American Airlines
Mon, Dec 7 - Mon, Dec 14
American Airlines Logo
7:00 am - 10:07 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
19h 07m1 stop Charlotte Douglas
American Airlines Logo
11:59 pm - 6:03 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
14h 04m2 stops Dallas/Fort Worth Miami
$504American Airlines
Thu, Dec 3 - Mon, Dec 7
Frontier Logo
4:07 pm - 9:37 amSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
21h 30m2 stops Orlando Dallas/Fort Worth
Frontier Logo
12:36 pm - 10:37 amONT  Ontario-SJU San Juan Luis Munoz Marin Intl
18h 01m2 stops Dallas/Fort Worth Orlando
$517Frontier
Thu, Dec 17 - Wed, Dec 30
Frontier Logo
5:35 am - 6:15 pmSJU  San Juan Luis Munoz Marin Intl-ONT Ontario
16h 40m2 stops Tampa Dallas/Fort Worth
Frontier Logo
10:48 pm - 11:44 pmONT  Ontario-SJU San Juan Luis Munoz Marin Intl
20h 56m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
$523Frontier
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 $387 to $537. The lowest price found in the past 5 days was $466, 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 11% cheaper than the average day, while Saturday is the most expensive, with prices 26% 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 43% 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

$144
Beat the crowds with an average 75% drop in travelers.
The most popular month to fly with an average 201% 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 about 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 $387 to $537, with an average of $435 over the past 12 months. Anything below $387 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 35% above the $435 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 $201, which is 34% 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 averaging $60 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Alamo
    • Dollar

  • 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) - 41% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 23% of one-stop connections
    • Charlotte Douglas (CLT) - 12% of one-stop connections
    • Baltimore/Washington (BWI) - 11% 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 30% 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 Saturday is the most expensive at $551, a difference of $163.

    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 Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 10h 39m, compared with 10h 49m via Houston George Bush Intcntl (IAH) and 11h 10m via Dallas/Fort Worth (DFW).

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

    Ontario is 4 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 Saturday. On this route, Friday flights average $388, about $163 less than Saturday fares (30% 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 43% 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.

    • Ontario Airport Inn
    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • Holiday Inn Ontario Airport By IHG

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