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Cheap flights from Ontario to Puerto Rico from $153

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 12/30. 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
0 bags

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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
6:00 am - 9:26 pmONT-SJU
11h 26m1 stop
United Airlines Logo
7:45 am - 8:58 pmSJU-ONT
17h 13m2 stops
$283United Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 22
American Airlines Logo
7:16 am - 10:26 pmONT-SJU
11h 10m1 stop
American Airlines Logo
3:54 pm - 10:48 pmSJU-ONT
10h 54m1 stop
$308American Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 22
Multiple Airlines Logo
7:56 pm - 12:27 pmONT-SJU
12h 31m1 stop
Multiple Airlines Logo
4:36 pm - 11:24 pmSJU-ONT
34h 48m2 stops
$314Multiple Airlines
Find Deal
Sun, Jan 18 - Fri, Jan 23
United Airlines Logo
6:37 pm - 12:49 pmONT-SJU
14h 12m2 stops
United Airlines Logo
8:35 am - 8:50 pmSJU-ONT
16h 15m2 stops
$315United Airlines
Find Deal
Mon, Mar 2 - Fri, Mar 6
Multiple Airlines Logo
7:56 pm - 12:27 pmONT-SJU
12h 31m1 stop
Multiple Airlines Logo
8:05 pm - 12:20 amSJU-ONT
32h 15m2 stops
$325Multiple Airlines
Find Deal
Sun, Jan 18 - Sat, Jan 24
Multiple Airlines Logo
7:56 pm - 12:27 pmONT-SJU
12h 31m1 stop
Multiple Airlines Logo
8:00 am - 2:27 pmSJU-ONT
34h 27m2 stops
$331Multiple Airlines
Find Deal
Sun, Jan 18 - Wed, Jan 21
Multiple Airlines Logo
8:32 am - 12:27 pmONT-SJU
23h 55m1 stop
Multiple Airlines Logo
4:36 pm - 12:20 amSJU-ONT
35h 44m2 stops
$340Multiple Airlines
Find Deal
Fri, Jan 16 - Thu, Jan 22
Frontier Logo
8:31 am - 6:34 amONT-SJU
18h 03m1 stop
Frontier Logo
6:59 pm - 11:59 pmSJU-ONT
33h 00m2 stops
$341Frontier
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Fri, Jan 9 - Fri, Feb 13
Multiple Airlines Logo
7:56 pm - 12:27 pmONT-SJU
12h 31m1 stop
Multiple Airlines Logo
4:36 pm - 12:20 amSJU-ONT
35h 44m2 stops
$344Multiple Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
7:15 am - 1:36 pmONT-SJU
26h 21m2 stops
Multiple Airlines Logo
7:50 pm - 2:27 pmSJU-ONT
22h 37m1 stop
$351Multiple Airlines
Find Deal
Sat, Jan 17 - Wed, Jan 21

American Airlines flights from Ontario to Puerto Rico

Our best American Airlines deals on Ontario to Puerto Rico flight tickets
American Airlines
Jan 18
ONT7:16 amOntario
11h 10m
1 stop
SJU10:26 pmSan Juan Luis Munoz Marin Intl
Jan 22
SJU3:54 pmSan Juan Luis Munoz Marin Intl
10h 54m
1 stop
ONT10:48 pmOntario
$308
Find similar
American Airlines
Jan 21
ONT6:00 amOntario
12h 26m
1 stop
SJU10:26 pmSan Juan Luis Munoz Marin Intl
Jan 22
SJU7:07 amSan Juan Luis Munoz Marin Intl
11h 11m
1 stop
ONT2:18 pmOntario
$356
Find similar
American Airlines
Jan 26
ONT11:59 pmOntario
13h 02m
2 stops
SJU5:01 pmSan Juan Luis Munoz Marin Intl
Jan 29
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 18m
2 stops
ONT2:18 pmOntario
$361
Find similar

Delta flights from Ontario to Puerto Rico

Our best Delta deals on Ontario to Puerto Rico flight tickets
Delta
Dec 5
ONT10:25 pmOntario
10h 20m
1 stop
SJU12:45 pmSan Juan Luis Munoz Marin Intl
Dec 11
SJU1:55 pmSan Juan Luis Munoz Marin Intl
9h 44m
1 stop
ONT7:39 pmOntario
$465
Find similar
Delta
Nov 28
ONT7:05 amOntario
12h 08m
1 stop
SJU11:13 pmSan Juan Luis Munoz Marin Intl
Dec 2
SJU1:55 pmSan Juan Luis Munoz Marin Intl
13h 09m
1 stop
ONT11:04 pmOntario
$647
Find similar
Delta
Nov 27
ONT7:05 amOntario
12h 08m
1 stop
SJU11:13 pmSan Juan Luis Munoz Marin Intl
Dec 2
SJU1:55 pmSan Juan Luis Munoz Marin Intl
13h 09m
1 stop
ONT11:04 pmOntario
$692
Find similar

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 November 26, 2025.
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

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 1/18

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Thu 1/22

7:45 am-8:58 pm

2 stops17h 13m

$283

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 1/18

7:16 am-10:26 pm

1 stop11h 10m

San Juan Luis Munoz Marin Intl

Thu 1/22

3:54 pm-10:48 pm

1 stop10h 54m

$308

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 1/18

7:56 pm-12:27 pm

1 stop12h 31m

San Juan Luis Munoz Marin Intl

Fri 1/23

4:36 pm-11:24 pm

2 stops34h 48m

$314

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 3/2

6:37 pm-12:49 pm

2 stops14h 12m

San Juan Luis Munoz Marin Intl

Fri 3/6

8:35 am-8:50 pm

2 stops16h 15m

$315

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 1/18

7:56 pm-12:27 pm

1 stop12h 31m

San Juan Luis Munoz Marin Intl

Sat 1/24

8:05 pm-12:20 am

2 stops32h 15m

$325

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 1/18

7:56 pm-12:27 pm

1 stop12h 31m

San Juan Luis Munoz Marin Intl

Wed 1/21

8:00 am-2:27 pm

2 stops34h 27m

$331

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 1/16

8:32 am-12:27 pm

1 stop23h 55m

San Juan Luis Munoz Marin Intl

Thu 1/22

4:36 pm-12:20 am

2 stops35h 44m

$340

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 1/9

8:31 am-6:34 am

1 stop18h 03m

San Juan Luis Munoz Marin Intl

Fri 2/13

6:59 pm-11:59 pm

2 stops33h 00m

$341

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 1/15

7:56 pm-12:27 pm

1 stop12h 31m

San Juan Luis Munoz Marin Intl

Thu 1/22

4:36 pm-12:20 am

2 stops35h 44m

$344

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 1/17

7:15 am-1:36 pm

2 stops26h 21m

San Juan Luis Munoz Marin Intl

Wed 1/21

7:50 pm-2:27 pm

1 stop22h 37m

$351

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 October, then you should wait until April to fly from Ontario, when ticket prices are also cheap, with an average price of $477.

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from Ontario is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $413. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Thursday, with ticket prices averaging around $672.

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

Our most recent data shows that the best time of day to fly to Puerto Rico is in the evening. Flights from Ontario to Puerto Rico during this time can be as low as $532. In contrast, the most expensive time of day to depart to Puerto Rico is in the afternoon when prices are around $735.

How far in advance should I book a flight 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 $594 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 $494 on momondo.

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

You could potentially save up to 5% 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 20m

Direct flights

None
The fastest flight from Ontario to Puerto Rico takes 9h 20m
There are no direct flights from Ontario to Puerto Rico. There are no popular flight routes from Ontario to Puerto Rico.
Search flight deals

  • 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
FrontierPriceFrom $73Free CancellationRating
5.8
3,099 reviews
Search Frontier flights
DeltaPriceFrom $355Free CancellationRating
7.9
7,999 reviews
Search Delta flights
United AirlinesPriceFrom $355Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
American AirlinesPriceFrom $365Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $480Free CancellationRating
8.0
4,254 reviews
Search Southwest 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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