Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Puerto Rico from $147

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 4/18. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:15 pm - 5:53 am
ONT
-
SJU
10h 38m
1 stop
Frontier Logo
6:15 am - 3:25 pm
SJU
-
ONT
12h 10m
1 stop
$276Frontier
Tue, Aug 11 - Wed, Aug 19
United Airlines Logo
7:00 am - 8:34 pm
ONT
-
SJU
10h 34m
1 stop
United Airlines Logo
7:20 am - 8:36 pm
SJU
-
ONT
16h 16m
2 stops
$294United Airlines
Sat, Apr 25 - Wed, Apr 29
Frontier Logo
4:15 pm - 5:53 am
ONT
-
SJU
10h 38m
1 stop
Frontier Logo
6:15 am - 3:25 pm
SJU
-
ONT
12h 10m
1 stop
$296Frontier
Wed, Aug 12 - Wed, Aug 19
Frontier Logo
4:15 pm - 5:53 am
ONT
-
SJU
10h 38m
1 stop
Frontier Logo
6:15 am - 3:25 pm
SJU
-
ONT
12h 10m
1 stop
$316Frontier
Sat, Aug 1 - Wed, Aug 12
United Airlines Logo
6:49 pm - 12:34 pm
ONT
-
SJU
14h 45m
2 stops
United Airlines Logo
7:00 am - 5:52 pm
SJU
-
ONT
13h 52m
2 stops
$318United Airlines
Sun, Apr 26 - Wed, May 6
Delta Logo
7:05 am - 11:13 pm
ONT
-
SJU
13h 08m
1 stop
Delta Logo
7:30 am - 6:36 pm
SJU
-
ONT
14h 06m
1 stop
$336Delta
Sun, May 3 - Fri, May 8
Frontier Logo
4:15 pm - 5:53 am
ONT
-
SJU
10h 38m
1 stop
Frontier Logo
6:15 am - 3:25 pm
SJU
-
ONT
12h 10m
1 stop
$351Frontier
Sun, Aug 2 - Wed, Aug 12
Multiple Airlines Logo
8:15 am - 11:10 pm
ONT
-
SJU
11h 55m
1 stop
Multiple Airlines Logo
7:17 pm - 11:55 pm
SJU
-
ONT
55h 38m
2 stops
$353Multiple Airlines
Wed, Apr 15 - Thu, Apr 23
JetBlue Logo
11:59 pm - 2:22 pm
ONT
-
BQN
11h 23m
1 stop
JetBlue Logo
8:37 am - 10:40 pm
BQN
-
ONT
17h 03m
2 stops
$1,816JetBlue
Fri, Jun 19 - Fri, Jun 26
JetBlue Logo
11:59 pm - 2:22 pm
ONT
-
BQN
11h 23m
1 stop
JetBlue Logo
8:37 am - 10:40 pm
BQN
-
ONT
17h 03m
2 stops
$1,889JetBlue
Thu, Jun 18 - Fri, Jun 26

United Airlines flights from Ontario to Puerto Rico

Our best United Airlines deals on Ontario to Puerto Rico flight tickets
United Airlines
Apr 25
ONT7:00 amOntario
10h 34m
1 stop
SJU8:34 pmSan Juan Luis Munoz Marin Intl
Apr 29
SJU7:20 amSan Juan Luis Munoz Marin Intl
16h 16m
2 stops
ONT8:36 pmOntario
$294
United Airlines
Apr 25
ONT6:05 amOntario
14h 45m
2 stops
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Apr 29
SJU7:20 amSan Juan Luis Munoz Marin Intl
13h 27m
2 stops
ONT5:47 pmOntario
$372
United Airlines
May 3
ONT5:00 amOntario
9h 38m
1 stop
SJU5:38 pmSan Juan Luis Munoz Marin Intl
May 5
SJU1:00 amSan Juan Luis Munoz Marin Intl
14h 38m
2 stops
ONT12:38 pmOntario
$384

Delta flights from Ontario to Puerto Rico

Our best Delta deals on Ontario to Puerto Rico flight tickets
Delta
May 3
ONT7:05 amOntario
13h 08m
1 stop
SJU11:13 pmSan Juan Luis Munoz Marin Intl
May 8
SJU7:30 amSan Juan Luis Munoz Marin Intl
14h 06m
1 stop
ONT6:36 pmOntario
$336
Delta
May 9
ONT10:00 pmOntario
12h 38m
1 stop
SJU1:38 pmSan Juan Luis Munoz Marin Intl
May 16
SJU7:30 amSan Juan Luis Munoz Marin Intl
14h 06m
1 stop
ONT6:36 pmOntario
$397
Delta
Apr 30
ONT7:05 amOntario
10h 19m
1 stop
SJU8:24 pmSan Juan Luis Munoz Marin Intl
May 8
SJU7:30 amSan Juan Luis Munoz Marin Intl
14h 06m
1 stop
ONT6:36 pmOntario
$438

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 March 4, 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

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 8/11

4:15 pm-5:53 am

1 stop10h 38m

San Juan Luis Munoz Marin Intl

Wed 8/19

6:15 am-3:25 pm

1 stop12h 10m

$276

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 4/25

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Wed 4/29

7:20 am-8:36 pm

2 stops16h 16m

$294

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 8/12

4:15 pm-5:53 am

1 stop10h 38m

San Juan Luis Munoz Marin Intl

Wed 8/19

6:15 am-3:25 pm

1 stop12h 10m

$296

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 8/1

4:15 pm-5:53 am

1 stop10h 38m

San Juan Luis Munoz Marin Intl

Wed 8/12

6:15 am-3:25 pm

1 stop12h 10m

$316

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 4/26

6:49 pm-12:34 pm

2 stops14h 45m

San Juan Luis Munoz Marin Intl

Wed 5/6

7:00 am-5:52 pm

2 stops13h 52m

$318

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 5/3

7:05 am-11:13 pm

1 stop13h 08m

San Juan Luis Munoz Marin Intl

Fri 5/8

7:30 am-6:36 pm

1 stop14h 06m

$336

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 8/2

4:15 pm-5:53 am

1 stop10h 38m

San Juan Luis Munoz Marin Intl

Wed 8/12

6:15 am-3:25 pm

1 stop12h 10m

$351

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 4/15

8:15 am-11:10 pm

1 stop11h 55m

San Juan Luis Munoz Marin Intl

Thu 4/23

7:17 pm-11:55 pm

2 stops55h 38m

$353

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Fri 6/19

11:59 pm-2:22 pm

1 stop11h 23m

Aguadilla Borinquen

Fri 6/26

8:37 am-10:40 pm

2 stops17h 03m

$1,816

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Thu 6/18

11:59 pm-2:22 pm

1 stop11h 23m

Aguadilla Borinquen

Fri 6/26

8:37 am-10:40 pm

2 stops17h 03m

$1,889

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 February to fly from Ontario, when ticket prices are also cheap, with an average price of $485.

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 $573 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 $465 on momondo.

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

You could potentially save up to 43% 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 10m

Direct flights

None
The fastest flight from Ontario to Puerto Rico takes 9h 10m
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
5.7
3,041 reviews
Search Frontier flights
DeltaPriceFrom $292Free CancellationRating
7.9
8,246 reviews
Search Delta flights
United AirlinesPriceFrom $321Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights
American AirlinesPriceFrom $365Free CancellationRating
7.1
11,380 reviews
Search American Airlines flights
SouthwestPriceFrom $445Free CancellationRating
8.0
4,304 reviews
Search Southwest flights
JetBluePriceFrom $455Free CancellationRating
7.2
2,896 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 4/3
Fri 4/10
By creating a price alert you accept our terms of use and privacy policy.

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
Flights to San Juanfrom $89
Flights to Aguadillafrom $190
Flights to Mayagüezfrom $389