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Cheap flights from Ontario to Puerto Rico from $232

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Puerto Rico departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 5:38 pm
ONT
-
SJU
9h 38m
1 stop
United Airlines Logo
7:25 am - 8:56 pm
SJU
-
ONT
16h 31m
2 stops
$384United Airlines
Thu, Oct 22 - Sat, Oct 31
United Airlines Logo
5:00 am - 5:38 pm
ONT
-
SJU
9h 38m
1 stop
United Airlines Logo
2:46 pm - 9:50 pm
SJU
-
ONT
10h 04m
1 stop
$404United Airlines
Mon, Oct 19 - Fri, Oct 30
Southwest Logo
12:05 pm - 1:20 am
ONT
-
SJU
10h 15m
2 stops
Southwest Logo
5:00 am - 2:25 pm
SJU
-
ONT
12h 25m
2 stops
$414Southwest
Mon, Oct 19 - Fri, Oct 30
United Airlines Logo
5:00 am - 5:38 pm
ONT
-
SJU
9h 38m
1 stop
United Airlines Logo
1:21 pm - 8:56 pm
SJU
-
ONT
10h 35m
1 stop
$429United Airlines
Thu, Oct 22 - Sat, Oct 31
American Airlines Logo
10:34 pm - 1:04 pm
ONT
-
SJU
10h 30m
1 stop
American Airlines Logo
6:44 am - 10:23 pm
SJU
-
ONT
19h 39m
1 stop
$436American Airlines
Sun, Nov 1 - Fri, Nov 13
United Airlines Logo
5:00 am - 5:25 pm
ONT
-
SJU
9h 25m
1 stop
United Airlines Logo
8:05 am - 8:06 pm
SJU
-
ONT
16h 01m
2 stops
$437United Airlines
Thu, Oct 29 - Mon, Nov 9
Delta Logo
5:52 pm - 12:36 pm
ONT
-
SJU
14h 44m
2 stops
Delta Logo
2:05 pm - 11:48 pm
SJU
-
ONT
13h 43m
2 stops
$442Delta
Sun, Nov 1 - Fri, Nov 13
Southwest Logo
6:55 am - 10:55 pm
ONT
-
SJU
12h 00m
2 stops
Southwest Logo
5:45 am - 12:50 pm
SJU
-
ONT
11h 05m
2 stops
$450Southwest
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
10:34 pm - 1:04 pm
ONT
-
SJU
10h 30m
1 stop
American Airlines Logo
6:44 am - 2:04 pm
SJU
-
ONT
11h 20m
1 stop
$456American Airlines
Sun, Nov 1 - Fri, Nov 13
Southwest Logo
8:35 am - 10:00 pm
ONT
-
SJU
10h 25m
2 stops
Southwest Logo
5:00 am - 2:00 pm
SJU
-
ONT
12h 00m
2 stops
$460Southwest
Tue, Aug 25 - Mon, Aug 31

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Frontier flights from Ontario to Puerto Rico

Our best Frontier deals on Ontario to Puerto Rico flight tickets
Frontier
Aug 5
ONT8:17 amOntario
17h 45m
1 stop
SJU5:02 amSan Juan Luis Munoz Marin Intl
Aug 12
SJU6:00 amSan Juan Luis Munoz Marin Intl
28h 32m
2 stops
ONT7:32 amOntario
$549
Frontier
Aug 6
ONT4:09 pmOntario
16h 34m
2 stops
SJU11:43 amSan Juan Luis Munoz Marin Intl
Aug 14
SJU6:32 amSan Juan Luis Munoz Marin Intl
29h 09m
1 stop
ONT8:41 amOntario
$567
Frontier
Jul 29
ONT8:17 amOntario
17h 45m
1 stop
SJU5:02 amSan Juan Luis Munoz Marin Intl
Aug 2
SJU6:44 amSan Juan Luis Munoz Marin Intl
30h 20m
2 stops
ONT10:04 amOntario
$705

American Airlines flights from Ontario to Puerto Rico

Our best American Airlines deals on Ontario to Puerto Rico flight tickets
American Airlines
Nov 1
ONT10:34 pmOntario
10h 30m
1 stop
SJU1:04 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU6:44 amSan Juan Luis Munoz Marin Intl
19h 39m
1 stop
ONT10:23 pmOntario
$436
American Airlines
Nov 1
ONT10:34 pmOntario
10h 30m
1 stop
SJU1:04 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU6:44 amSan Juan Luis Munoz Marin Intl
11h 20m
1 stop
ONT2:04 pmOntario
$456
American Airlines
Dec 5
ONT7:30 pmOntario
11h 05m
2 stops
SJU10:35 amSan Juan Luis Munoz Marin Intl
Dec 17
SJU10:26 amSan Juan Luis Munoz Marin Intl
12h 02m
2 stops
ONT6:28 pmOntario
$493

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Puerto Rico 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, momondo users made 832,500 searches. Data last updated July 16, 2026.
Use the filters below to find and compare flights from Ontario to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 10/22

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Sat 10/31

7:25 am-8:56 pm

2 stops16h 31m

$384
Quickest round-trip

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 10/19

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Fri 10/30

2:46 pm-9:50 pm

1 stop10h 04m

$404

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 10/19

12:05 pm-1:20 am

2 stops10h 15m

San Juan Luis Munoz Marin Intl

Fri 10/30

5:00 am-2:25 pm

2 stops12h 25m

$414

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 10/22

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Sat 10/31

1:21 pm-8:56 pm

1 stop10h 35m

$429

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 11/1

10:34 pm-1:04 pm

1 stop10h 30m

San Juan Luis Munoz Marin Intl

Fri 11/13

6:44 am-10:23 pm

1 stop19h 39m

$436

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 10/29

5:00 am-5:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Mon 11/9

8:05 am-8:06 pm

2 stops16h 01m

$437

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 11/1

5:52 pm-12:36 pm

2 stops14h 44m

San Juan Luis Munoz Marin Intl

Fri 11/13

2:05 pm-11:48 pm

2 stops13h 43m

$442

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 11/12

6:55 am-10:55 pm

2 stops12h 00m

San Juan Luis Munoz Marin Intl

Mon 11/16

5:45 am-12:50 pm

2 stops11h 05m

$450

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 11/1

10:34 pm-1:04 pm

1 stop10h 30m

San Juan Luis Munoz Marin Intl

Fri 11/13

6:44 am-2:04 pm

1 stop11h 20m

$456

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 8/25

8:35 am-10:00 pm

2 stops10h 25m

San Juan Luis Munoz Marin Intl

Mon 8/31

5:00 am-2:00 pm

2 stops12h 00m

$460

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Puerto Rico from

How to get the cheapest flight ticket from Ontario to Puerto Rico

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Puerto Rico?

If you don’t want to visit Puerto Rico in November, then you should wait until April to fly from Ontario, when ticket prices are also cheap, with an average price of $168.

How far in advance should I book a flight from Ontario to Puerto Rico?

You are more likely to see cheaper flights to Puerto Rico from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $546 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from Ontario for as low as $429 on momondo.

Can stopping save me money on Ontario to Puerto Rico flights?

You could potentially save up to 21% on your flight if you consider stops on a Ontario to Puerto Rico flight.

Cheap Ontario to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Puerto Rico

Fastest flight time

9h 38m

Direct flights

None
The fastest flight from Ontario to Puerto Rico takes 9h 38m
There are no direct flights from Ontario to Puerto Rico. There are no popular flight routes from Ontario to Puerto Rico.
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Frequently asked questions about flying from Ontario to Puerto Rico

  • When did momondo last update prices for flights from Ontario Airport to Puerto Rico?

    Prices for flights from Ontario Airport to Puerto Rico are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Puerto Rico?

  • How old do you have to be to fly from Ontario Airport to Puerto Rico?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The travel and health documents you'll need for your trip to Puerto Rico may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Puerto Rico. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Puerto Rico

Compare and see reviews for airlines that fly from Ontario to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $168Free CancellationRating
7.8
8,472 reviews
Search Delta flights
FrontierPriceFrom $176Free CancellationRating
5.6
2,794 reviews
Search Frontier flights
United AirlinesPriceFrom $318Free CancellationRating
7.4
9,994 reviews
Search United Airlines flights
American AirlinesPriceFrom $360Free CancellationRating
7.1
11,816 reviews
Search American Airlines flights
SouthwestPriceFrom $419Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
JetBluePriceFrom $455Free CancellationRating
7.1
3,012 reviews
Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Puerto Rico?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Puerto Rico for you.

Can I find flights from Ontario to Puerto Rico with flexible booking policies on momondo?

Yes. All flights to Puerto Rico from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Puerto Rico?

momondo helps you find the best flight between Ontario and Puerto Rico by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Puerto Rico right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Puerto Rico now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Puerto Rico and let you know when they change.

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