What airlines fly to Puerto Rico?

American Airlines, Frontier and United Airlines are the top three most popular airlines that fly to Puerto Rico from Ontario according to our data. American Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Puerto Rico. Keep in mind that there are 6 different airlines that fly to Puerto Rico on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Puerto Rico?

American Airlines, United Airlines, and JetBlue are the most popular carriers operating 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?

There are 6 operators available for flights from Ontario Airport to Puerto Rico as of June 2026.

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.

$187 Cheap Flights from Ontario to Puerto Rico in 2026

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Find the cheapest flights from Ontario to Puerto Rico

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:13 pm - 12:13 pm

ONT

SJU

16h 00m

2 stops

7:30 am - 6:33 pm

SJU

ONT

14h 03m

1 stop

$374Delta

Sa, Sep 19 - Sa, Sep 26

2:27 pm - 2:38 pm

ONT

SJU

21h 11m

2 stops

7:24 pm - 9:34 am

SJU

ONT

17h 10m

2 stops

$379American Airlines

Mi, Aug 26 - Mo, Aug 31

12:59 pm - 12:48 pm

ONT

SJU

20h 49m

2 stops

7:22 pm - 9:34 am

SJU

ONT

17h 12m

2 stops

$381American Airlines

Sa, Aug 22 - Fr, Aug 28

11:00 am - 11:50 pm

ONT

SJU

9h 50m

2 stops

5:00 am - 3:15 pm

SJU

ONT

13h 15m

2 stops

$404Southwest

Fr, Aug 28 - Mo, Aug 31

10:10 pm - 2:51 pm

ONT

SJU

13h 41m

1 stop

3:44 pm - 10:58 pm

SJU

ONT

10h 14m

1 stop

$418American Airlines

Fr, Aug 28 - Mo, Aug 31

6:50 pm - 11:50 am

ONT

SJU

13h 00m

2 stops

5:35 am - 2:05 pm

SJU

ONT

12h 30m

2 stops

$422Southwest

So, Nov 8 - Fr, Nov 13

7:05 am - 10:00 pm

ONT

SJU

11h 55m

1 stop

7:30 am - 6:33 pm

SJU

ONT

14h 03m

1 stop

$432Delta

Di, Sep 22 - Sa, Sep 26

12:59 pm - 9:43 am

ONT

SJU

17h 44m

2 stops

3:44 pm - 10:59 pm

SJU

ONT

10h 15m

1 stop

$454American Airlines

Sa, Aug 22 - Fr, Aug 28

6:00 am - 8:38 pm

ONT

SJU

11h 38m

1 stop

1:00 am - 12:41 pm

SJU

ONT

14h 41m

2 stops

$464United Airlines

Di, Sep 22 - Mo, Sep 28

6:00 am - 11:09 pm

ONT

BQN

14h 09m

2 stops

12:15 am - 12:12 pm

BQN

ONT

14h 57m

2 stops

$602United Airlines

Di, Sep 29 - Mi, Sep 30

American Airlines flights from Ontario to Puerto Rico

Our best American Airlines deals on Ontario to Puerto Rico flight tickets

American Airlines

Aug 26

ONT2:27 pmOntario

21h 11m

2 stops

SJU2:38 pmSan Juan Luis Munoz Marin Intl

Aug 31

SJU7:24 pmSan Juan Luis Munoz Marin Intl

17h 10m

2 stops

ONT9:34 amOntario

$379

American Airlines

Aug 22

ONT12:59 pmOntario

20h 49m

2 stops

SJU12:48 pmSan Juan Luis Munoz Marin Intl

Aug 28

SJU7:22 pmSan Juan Luis Munoz Marin Intl

17h 12m

2 stops

ONT9:34 amOntario

$381

American Airlines

Aug 28

ONT10:10 pmOntario

13h 41m

1 stop

SJU2:51 pmSan Juan Luis Munoz Marin Intl

Aug 31

SJU3:44 pmSan Juan Luis Munoz Marin Intl

10h 14m

1 stop

ONT10:58 pmOntario

$418

United Airlines flights from Ontario to Puerto Rico

Our best United Airlines deals on Ontario to Puerto Rico flight tickets

United Airlines

Sep 22

ONT6:00 amOntario

11h 38m

1 stop

SJU8:38 pmSan Juan Luis Munoz Marin Intl

Sep 28

SJU1:00 amSan Juan Luis Munoz Marin Intl

14h 41m

2 stops

ONT12:41 pmOntario

$464

United Airlines

Sep 20

ONT6:00 amOntario

11h 38m

1 stop

SJU8:38 pmSan Juan Luis Munoz Marin Intl

Sep 28

SJU2:00 pmSan Juan Luis Munoz Marin Intl

9h 52m

1 stop

ONT8:52 pmOntario

$488

United Airlines

Sep 20

ONT7:13 pmOntario

15h 32m

2 stops

SJU1:45 pmSan Juan Luis Munoz Marin Intl

Sep 28

SJU2:55 pmSan Juan Luis Munoz Marin Intl

10h 03m

1 stop

ONT9:58 pmOntario

$492

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sa 9/19

5:13 pm-12:13 pm

2 stops16h 00m

San Juan Luis Munoz Marin Intl

Sa 9/26

7:30 am-6:33 pm

1 stop14h 03m

$374

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mi 8/26

2:27 pm-2:38 pm

2 stops21h 11m

San Juan Luis Munoz Marin Intl

Mo 8/31

7:24 pm-9:34 am

2 stops17h 10m

$379

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sa 8/22

12:59 pm-12:48 pm

2 stops20h 49m

San Juan Luis Munoz Marin Intl

Fr 8/28

7:22 pm-9:34 am

2 stops17h 12m

$381

Quickest round-trip

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fr 8/28

11:00 am-11:50 pm

2 stops9h 50m

San Juan Luis Munoz Marin Intl

Mo 8/31

5:00 am-3:15 pm

2 stops13h 15m

$404

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fr 8/28

10:10 pm-2:51 pm

1 stop13h 41m

San Juan Luis Munoz Marin Intl

Mo 8/31

3:44 pm-10:58 pm

1 stop10h 14m

$418

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

So 11/8

6:50 pm-11:50 am

2 stops13h 00m

San Juan Luis Munoz Marin Intl

Fr 11/13

5:35 am-2:05 pm

2 stops12h 30m

$422

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Di 9/22

7:05 am-10:00 pm

1 stop11h 55m

San Juan Luis Munoz Marin Intl

Sa 9/26

7:30 am-6:33 pm

1 stop14h 03m

$432

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sa 8/22

12:59 pm-9:43 am

2 stops17h 44m

San Juan Luis Munoz Marin Intl

Fr 8/28

3:44 pm-10:59 pm

1 stop10h 15m

$454

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Di 9/22

6:00 am-8:38 pm

1 stop11h 38m

San Juan Luis Munoz Marin Intl

Mo 9/28

1:00 am-12:41 pm

2 stops14h 41m

$464

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Di 9/29

6:00 am-11:09 pm

2 stops14h 09m

Aguadilla Borinquen

Mi 9/30

12:15 am-12:12 pm

2 stops14h 57m

$602

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 June to fly from Ontario, when ticket prices are also cheap, with an average price of $137.

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 $554 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 27% 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 37m
Direct flights	None

The fastest flight from Ontario to Puerto Rico takes 9h 37m

There are no direct flights from Ontario to Puerto Rico. There are no popular flight routes from Ontario to Puerto Rico.

Search flight deals

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?
There are 6 operators available for flights from Ontario Airport to Puerto Rico as of June 2026.
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
Frontier	PriceFrom $137	Free Cancellation	Rating 5.6 2,918 reviews	Search Frontier flights
Delta	PriceFrom $292	Free Cancellation	Rating 7.9 8,402 reviews	Search Delta flights
United Airlines	PriceFrom $318	Free Cancellation	Rating 7.4 9,773 reviews	Search United Airlines flights
American Airlines	PriceFrom $360	Free Cancellation	Rating 7.1 11,643 reviews	Search American Airlines flights
Southwest	PriceFrom $419	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights
JetBlue	PriceFrom $455	Free Cancellation	Rating 7.1 2,984 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.

An easier way to manage your Puerto Rico trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities

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Complete your trip

Feeling lucky

Popular cities in Puerto Rico

Flights to San Juanfrom $158

Flights to Aguadillafrom $202

Flights to Poncefrom $197

Flights to Culebrafrom $531

Flights to Mayagüezfrom $414

Cheap flights from Ontario to Puerto Rico from $187

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 6/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Ontario to Puerto Rico

Our best American Airlines deals on Ontario to Puerto Rico flight tickets

United Airlines flights from Ontario to Puerto Rico

Our best United Airlines deals on Ontario to Puerto Rico flight tickets

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Use the filters below to find and compare flights from Ontario to Puerto Rico that are best for you.

See travel insights to Puerto Rico from

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

What is the cheapest month to fly to Puerto Rico?

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

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

What is the cheapest airline that flies from Ontario to Puerto Rico?

What airlines fly to Puerto Rico?

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

Direct flights

Frequently asked questions about flying from Ontario to Puerto Rico

Best airlines flying from Ontario to Puerto Rico

Compare and see reviews for airlines that fly from Ontario to Puerto Rico with momondo

Why use momondo?

An easier way to manage your Puerto Rico trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Puerto Rico

Popular cities in Puerto Rico

Popular flights according to clicks in the last 7 days on momondo

Ontario flight routes

According to popular flight searches on momondo this year

Puerto Rico flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Puerto Rico

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Puerto Rico

List of cabin classes available on flights landing in Puerto Rico. Availability may vary depending on flight origin and airline.

Complete your trip to Puerto Rico

Explore popular destinations other users love

According to popular flight searches on momondo this year