Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.
ONTSJUSat, 03 Oct
Fare checked before payment No hidden charges Transparent cancellation policy 24×7 booking support
Lowest fareUS$272United Airlines
Fastest9h 38mgate to gate
Options found21flights on this route
Find your flightONT → SJU
Available Flights & Fares
Compare fares, timings and baggage. Pick the flight that suits your trip.
Prices in USD
21 flight options
Fares are checked again before payment.
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Today's Airfare Highlights
Selected flight highlights for 03 Oct 2026.
Lowest fare$272United Airlines05:00
Earliest departure$272United Airlines05:00
Shortest duration$272United Airlines05:00
Night
00:00-05:59
$272United Airlines at 05:00Morning
06:00-11:59
$272United Airlines at 06:00Afternoon
12:00-17:59
$287American Airlines at 13:05Evening
18:00-23:59
No optionOpen full search for more
Departure & Arrival Airport Details
Ontario (ONT)
Ontario International
United States
GMT -8
Latitude: 34.055999755859375
Longitude: -117.60099792480469
San Juan (SJU)
Luis Munoz Marin Intl
Puerto Rico
GMT -4
Latitude: 18.4393997192
Longitude: -66.0018005371
Distance: Ontario (ONT), United States to San Juan (SJU), Puerto Rico - 5,369.84 km
Flights shown for 03 Oct 2026. View all flights opens the complete search result.
Every option we can actually book for you, compared on price and journey time.
OptionFromJourney timeAvailability
Connecting flight₹25,969Longer — includes a stop21 options
Air distance is about 5,370 km. 3 airlines operate this route.
Road distance and coach duration are approximate estimates from the air distance, not a timetable.
Airlines flying from Ontario to San Juan
Compare fares, stops, baggage and refundability across the airlines flying this route.
UN
United Airlines Flights
from $27217 flights
Fares from
$272
Non-stop
None in these results
Departures
17 — compare timings in the list above
AM
American Airlines Flights
from $2873 flights
Fares from
$287
Non-stop
None in these results
Departures
3 — compare timings in the list above
Route Overview & Flight Facts
Fastest flight duration
9h 38m · United Airlines
First departure of the day
05:00 · United Airlines
Last departure of the day
13:22 · United Airlines
Options in this snapshot
21
Airport codes
Ontario–ONT, San Juan–SJU
Fares and timings are indicative — the exact price is confirmed with the airline when you search.
Flight Schedule, Timings & Airfare Insights
Daily Flight Schedule & Travel Duration
Around 21 flights appear in the dated route snapshot. Departures run through the day — the first flight leaves around 05:00 and the last around 13:22. The fastest flight takes about 9h 38m.
Morning vs Evening Departure Fares
Lowest fare by departure window: Night from $272, Morning from $272, Afternoon from $287. These observations do not predict the cheapest departure window on other dates.
Cheapest Airfare & Best Time to Book
Search your travel dates to compare current fares — prices update continuously with airline inventory.
One-Way vs Round-Trip Fare Comparison
Compare the complete cost and conditions of both options for your dates. A round-trip can have different fare and change rules from two one-way tickets. One booking may contain multiple airline PNRs; confirm baggage transfer and connection protection for separate tickets.
Online Web Check-In & Boarding Pass
Check the operating airline’s opening time and check-in deadline for each sector. Seat charges and availability depend on your fare. Use the airline reference and the links on Web Check-in.
How to Book Cheap Flights on FlyX
1
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Choose one-way or round-trip, pick your dates and travellers in the search form above.
2
Compare search results
Sort or filter the Ontario–San Juan results by price, departure time, stops and airline.
3
Open the fare choices
Check baggage allowance and refundability for each fare type before continuing.
4
Review the final price
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5
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UPI, cards, net banking and wallets supported; payment and ticket issuance have separate statuses. If issuance is pending, follow the booking status; the confirmed ticket is sent after issuance.
Why Book Your Flight with FlyX?
Compare the available Ontario to San Juan options by total price, stops, baggage and fare conditions. Search your dates for current availability, then review traveller details and the final price before paying.
Payment confirmation and ticket issuance are separate steps. If your booking is awaiting a PNR or ticket, follow its status and contact FlyX support when you need help. Your issued ticket contains the airline reference and itinerary. Change and cancellation charges depend on the purchased fare and any separately disclosed service fee.
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Frequently Asked Questions
Is it worth booking Ontario to San Juan flights in advance?
There is no guaranteed cheapest booking window. Compare your planned dates early, check nearby dates and consider baggage, connection time and change conditions as well as price. Across the dates currently loaded for Ontario to San Juan, Saturday shows the lowest fare at $272. That is an observed snapshot for these dates, not a rule that holds every week.
How far is Ontario from San Juan by air?
The direct air distance between Ontario (ONT) and San Juan (SJU) is about 5,370 km. Actual flight time varies with the routing the airline files and with winds on the day.
Are there non-stop flights from ONT to SJU?
Not for the dates currently loaded - every Ontario to San Juan option showing right now has at least one stop. Non-stop service can differ by season and by day, so it is worth checking nearby dates before you decide.
Which airlines fly Ontario to San Juan?
United Airlines and American Airlines are showing on this route for the dates currently loaded. Fares, baggage allowance and refund rules differ by airline and by fare type, so compare the fare conditions and not only the headline price.
How long is the flight from Ontario to San Juan?
Every option currently loaded has at least one stop, and the shortest total journey time is about 9h 38m including the layover. Non-stop service on this route can vary by season and by day.
What is the cheapest Ontario to San Juan flight fare?
The lowest fare showing on Ontario to San Juan for the dates currently loaded is $272. Fares on the same dates run up to $467, depending on airline, timing and fare type. Airline pricing moves continuously, so treat this as a dated observation rather than a fixed price.
What time do Ontario to San Juan flights depart?
For the dates currently loaded the first departure is around 05:00 and the last is around 13:22, local time at Ontario. Use the departure-time filter on the results above to narrow to a morning, afternoon or evening slot.
Why does the price change after clicking Book Now?
Airline seat inventory and fares change continuously. Selecting Book Now runs a live fare verification with the airline so the price you approve is the price you pay - if it has moved, you see the new figure before any payment.
Before you book this route
Check the airport codes ONT–SJU, local departure and arrival dates, and every connecting airport. Connections can have different document and baggage requirements from your final destination.
Where these fares come from
The fares, durations, stops and baggage shown here come from real airline search results for this route. They are examples for the dates on this page, not a full timetable and not a locked price — run a search to see what is available for your own dates.
Last checked .
Check official travel requirements
Confirm passport, visa and transit rules for your nationality and full itinerary with the relevant government and operating airline. IATA travel-document information explains why requirements vary.
Planning more than the flight? Our United States guide covers the visa process for Indian passport holders, best time to go, how long to plan for, and which places are worth the days you have. Long-haul city breaks and national parks.
The ONT to SJU cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.
Approx route distance: 5,369.84 km.
Before you book
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Lowest Ontario to San Juan airfare today, in 30 days and in 90 days
Cheapest Fare
Fare
Date
Airline
Departure
Lowest Airfare Today
$272
03/10/2026
United Airlines
05:00
Cheapest Airfare Within 30 Days
$266
13/10/2026
United Airlines
05:00
Cheapest Airfare Within 90 Days
$258
12/12/2026
United Airlines
05:00
Book Ontario to San Juan Flight Tickets on FlyX
Planning to fly from Ontario to San Juan? FlyX lets you compare flight rates, airline timings, layovers, and baggage allowances all in one simple list. From quick non-stop routes to flexible connecting options, finding and booking cheap air tickets has never been easier.
Ontario to San Juan Flight Distance, Duration and Time
The aerial distance between Ontario and San Juan is approximately 5,370 KM. The flight duration ranges from 9H :38 M up to 31H :28 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
Ontario to San Juan Flight Schedule and Timing
Around 21 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from Ontario at 05:00, while the last night flight leaves at 13:22. Flights depart from Ontario International and land at Luis Munoz Marin Intl.
Flight Route Details & Analysis
Flight Details
Information
Route
Ontario to San Juan
Aerial Distance
5,370 KM
Flight Duration
9H :38 M - 31H :28 M
Airport Codes
Ontario - ONT, San Juan - SJU
Total Flights Available
21 flights (0 direct)
First Flight Departure
Departs at 05:00
Last Flight Departure
Departs at 13:22
Early Morning Flights (12 AM - 8 AM)
12 direct/indirect flights
Morning Flights (8 AM - 12 PM)
2 direct/indirect flights
Afternoon Flights (12 PM - 4 PM)
7 direct/indirect flights
Evening Flights (4 PM - 8 PM)
0 direct/indirect flights
Night Flights (8 PM - 12 AM)
0 direct/indirect flights
Airport Information & Terminals
ONT: Ontario airport. Ontario airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.
SJU: San Juan airport. Airport access in San Juan depends on arrival time, terminal, hotel location and local traffic. Confirm the airport name on the ticket, then choose between official taxi, app cab, airport bus, rail or hotel transfer based on luggage and time of day.
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Ontario International
Luis Munoz Marin Intl