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

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Puerto Rico to Ontario

How long does it take to fly to Ontario?

Average flight duration from Puerto Rico to Ontario depends on which airport you fly into and out of. Flying from San Juan to Los Angeles is 9h 56m on average, while flying from Ponce to Los Angeles is 11h 28m on average. Los Angeles is the most popular airport in Ontario.

What airlines fly to Ontario?

American Airlines, United Airlines and JetBlue are the top three most popular airlines that fly to Ontario from Puerto Rico according to our data. American Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Puerto Rico to Ontario Airport were last updated today.

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

The number of operators available for flights from Puerto Rico to Ontario Airport is 2 as of November 2025.

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

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 Puerto Rico to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$147 Cheap Flights from Puerto Rico to Ontario in 2025/26

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Find the cheapest flights from Puerto Rico to Los Angeles

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Recent round-trip flight deals from Puerto Rico to Los Angeles

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7:06 pm - 8:53 amSJU-ONT

17h 47m1 stop

6:00 pm - 1:42 amONT-SJU

27h 42m2 stops

$261Frontier

Find Deal

Wed, Dec 24 - Mon, Jan 5

3:54 am - 3:46 pmSJU-ONT

15h 52m2 stops

4:16 pm - 6:34 amONT-SJU

10h 18m1 stop

$352Frontier

Find Deal

Mon, Dec 22 - Thu, Jan 1

7:07 am - 6:20 pmSJU-ONT

15h 13m2 stops

7:16 am - 11:59 pmONT-SJU

12h 43m2 stops

$355American Airlines

Find Deal

Wed, Jan 21 - Sat, Jan 24

7:06 pm - 8:53 amSJU-ONT

17h 47m1 stop

8:14 am - 12:33 amONT-SJU

12h 19m1 stop

$368Multiple Airlines

Find Deal

Wed, Dec 24 - Mon, Jan 5

7:50 pm - 9:17 pmSJU-ONT

29h 27m2 stops

6:56 pm - 12:27 pmONT-SJU

13h 31m1 stop

$378Multiple Airlines

Find Deal

Wed, Jan 21 - Sun, Jan 25

5:24 am - 8:58 pmSJU-ONT

19h 34m2 stops

4:47 pm - 10:48 amONT-SJU

14h 01m2 stops

$414American Airlines

Find Deal

Wed, Dec 24 - Mon, Jan 5

6:15 am - 6:35 pmSJU-ONT

16h 20m1 stop

10:15 am - 12:30 amONT-SJU

10h 15m2 stops

$428Southwest

Find Deal

Sat, Dec 6 - Sat, Dec 13

3:46 pm - 9:49 pmSJU-ONT

10h 03m1 stop

6:00 am - 9:26 pmONT-SJU

11h 26m1 stop

$445United Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

6:15 am - 6:35 pmSJU-ONT

16h 20m1 stop

6:00 am - 11:15 pmONT-SJU

13h 15m1 stop

$470Southwest

Find Deal

Sat, Dec 6 - Sat, Dec 13

3:46 pm - 9:49 pmSJU-ONT

10h 03m1 stop

5:05 am - 10:22 pmONT-SJU

13h 17m2 stops

$480United Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

American Airlines flights from Puerto Rico to Ontario

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

American Airlines

Jan 21

SJU7:07 amSan Juan Luis Munoz Marin Intl

15h 13m

2 stops

ONT6:20 pmOntario

Jan 24

ONT7:16 amOntario

12h 43m

2 stops

SJU11:59 pmSan Juan Luis Munoz Marin Intl

$355

Find similar

American Airlines

Dec 24

SJU5:24 amSan Juan Luis Munoz Marin Intl

19h 34m

2 stops

ONT8:58 pmOntario

Jan 5

ONT4:47 pmOntario

14h 01m

2 stops

SJU10:48 amSan Juan Luis Munoz Marin Intl

$414

Find similar

American Airlines

Jan 21

SJU7:07 amSan Juan Luis Munoz Marin Intl

15h 38m

1 stop

ONT6:45 pmOntario

Jan 24

ONT6:00 amOntario

12h 26m

1 stop

SJU10:26 pmSan Juan Luis Munoz Marin Intl

$439

Find similar

United Airlines flights from Puerto Rico to Ontario

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

United Airlines

Dec 3

SJU3:46 pmSan Juan Luis Munoz Marin Intl

10h 03m

1 stop

ONT9:49 pmOntario

Dec 10

ONT6:00 amOntario

11h 26m

1 stop

SJU9:26 pmSan Juan Luis Munoz Marin Intl

$445

Find similar

United Airlines

Dec 3

SJU3:46 pmSan Juan Luis Munoz Marin Intl

10h 03m

1 stop

ONT9:49 pmOntario

Dec 10

ONT5:05 amOntario

13h 17m

2 stops

SJU10:22 pmSan Juan Luis Munoz Marin Intl

$480

Find similar

United Airlines

Dec 3

SJU3:46 pmSan Juan Luis Munoz Marin Intl

10h 03m

1 stop

ONT9:49 pmOntario

Dec 9

ONT6:00 amOntario

11h 26m

1 stop

SJU9:26 pmSan Juan Luis Munoz Marin Intl

$515

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/24

7:06 pm-8:53 am

1 stop17h 47m

Ontario

Mon 1/5

6:00 pm-1:42 am

2 stops27h 42m

$261

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Mon 12/22

3:54 am-3:46 pm

2 stops15h 52m

Ontario

Thu 1/1

4:16 pm-6:34 am

1 stop10h 18m

$352

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 1/21

7:07 am-6:20 pm

2 stops15h 13m

Ontario

Sat 1/24

7:16 am-11:59 pm

2 stops12h 43m

$355

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/24

7:06 pm-8:53 am

1 stop17h 47m

Ontario

Mon 1/5

8:14 am-12:33 am

1 stop12h 19m

$368

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 1/21

7:50 pm-9:17 pm

2 stops29h 27m

Ontario

Sun 1/25

6:56 pm-12:27 pm

1 stop13h 31m

$378

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/24

5:24 am-8:58 pm

2 stops19h 34m

Ontario

Mon 1/5

4:47 pm-10:48 am

2 stops14h 01m

$414

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Sat 12/6

6:15 am-6:35 pm

1 stop16h 20m

Ontario

Sat 12/13

10:15 am-12:30 am

2 stops10h 15m

$428

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/3

3:46 pm-9:49 pm

1 stop10h 03m

Ontario

Wed 12/10

6:00 am-9:26 pm

1 stop11h 26m

$445

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Sat 12/6

6:15 am-6:35 pm

1 stop16h 20m

Ontario

Sat 12/13

6:00 am-11:15 pm

1 stop13h 15m

$470

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/3

3:46 pm-9:49 pm

1 stop10h 03m

Ontario

Wed 12/10

5:05 am-10:22 pm

2 stops13h 17m

$480

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

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

Other information

What is the cheapest month to fly to Ontario?

In general, July is the cheapest month to fly from Puerto Rico to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $333. If you aren’t able to travel during the month of July, then book flights to Ontario from Puerto Rico during March instead. Flights to Ontario in March, while not as cheap as those in July, still average around $351.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $364. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Puerto Rico to Ontario for around $734.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Puerto Rico to Ontario when you can find flight prices for as low as $363. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $665 on average. Flights to Ontario from Puerto Rico in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Puerto Rico to Ontario flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Puerto Rico to Ontario Airport?
Prices for flights from Puerto Rico to Ontario Airport were last updated today.
How many operators does momondo search for flights from Puerto Rico to Ontario Airport?
The number of operators available for flights from Puerto Rico to Ontario Airport is 2 as of November 2025.
How old do you have to be to fly from Puerto Rico to Ontario Airport?
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 Puerto Rico to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Puerto Rico to Ontario

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $355	Free Cancellation	Rating 7.2 11,040 reviews		Search American Airlines flights
United Airlines	PriceFrom $433	Free Cancellation	Rating 7.4 9,007 reviews		Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Puerto Rico to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Puerto Rico to Ontario.

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

Yes. momondo can track prices for Puerto Rico to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.