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Puerto Rico

$133+ Cheap flights from Riverside, CA to Puerto Rico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJU
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Riverside to Puerto Rico

Keep the following information in mind while searching for Riverside to Puerto Rico flight deals. Data was last updated September 15, 2025.

Round-trip from

$268
(CheapOair)

One-way from

$133
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$445
From Riverside to Puerto Rico
Search Deals
One-way flight from Riverside to Puerto Rico
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Highest demand for flights based on searches. 11% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Riverside to Puerto Rico

Cheapest flights from Riverside to Puerto Rico
Explore the most affordable flight options available from Riverside to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This CheapOair deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:27 pmLAX - PSE
1 stop15h 51mFrontier
Mon 10/1311:54 amPSE - LAX
1 stop23h 34mFrontier
Deal found 9/13$268
This Priceline deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:21 pmLAX - BQN
1 stop9h 06mFrontier
Sat 9/273:32 amBQN - LAX
1 stop31h 40mFrontier
Deal found 9/13$268
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/229:31 pmLAX - SJU
1 stop11h 30mFrontier
Sat 9/2712:28 amSJU - LAX
1 stop23h 08mFrontier
Deal found 9/15$275
This Cheapflightsfares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/182:27 pmLAX - SJU
1 stop9h 03mFrontier
Wed 10/226:22 amSJU - LAX
1 stop11h 18mFrontier
Deal found 9/13$276
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:35 amLAX - SJU
1 stop15h 23mMultiple Airlines
Mon 10/62:49 amSJU - LAX
1 stop32h 39mMultiple Airlines
Deal found 9/14$277
This Cheapflightsfares deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:27 pmLAX - SJU
1 stop9h 03mFrontier
Tue 10/216:22 amSJU - LAX
1 stop11h 18mFrontier
Deal found 9/12$278
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:20 amLAX - SJU
2 stops22h 36mSpirit Airlines
Wed 10/293:19 pmSJU - LAX
2 stops19h 47mSpirit Airlines
Deal found 9/13$279
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/212:27 pmLAX - SJU
1 stop9h 03mMultiple Airlines
Sun 10/264:04 pmSJU - LAX
1 stop10h 44mMultiple Airlines
Deal found 9/14$280
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:25 pmLAX - SJU
1 stop22h 34mMultiple Airlines
Thu 11/612:10 pmSJU - LAX
2 stops15h 56mMultiple Airlines
Deal found 9/13$281
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/119:20 amLAX - SJU
2 stops26h 39mMultiple Airlines
Fri 10/171:59 amSJU - LAX
1 stop21h 37mMultiple Airlines
Deal found 9/13$282
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:57 amLAX - SJU
1 stop15h 47mMultiple Airlines
Mon 11/104:31 pmSJU - LAX
1 stop20h 40mMultiple Airlines
Deal found 9/14$283
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/192:21 pmLAX - SJU
1 stop9h 13mFrontier
Fri 10/1012:02 pmSJU - LAX
1 stop11h 34mFrontier
Deal found 9/14$284

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Riverside to Puerto Rico that are best for you.

Fly from

Riverside

Fly to

Puerto Rico

Route

Depart

Return

Price

Los AngelesPonce

LAX - PSE

LAXPSE

Los Angeles

Thu 10/9

2:27 pm-9:18 am

1 stop15h 51m

Ponce Mercedita

Mon 10/13

11:54 am-8:28 am

1 stop23h 34m

$268

Los AngelesPonce

LAX - PSE

LAXPSE

Los Angeles

Thu 10/16

2:27 pm-9:18 am

1 stop15h 51m

Ponce Mercedita

Mon 10/20

10:44 am-8:28 am

1 stop24h 44m

$268

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Tue 10/28

5:00 am-5:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Sat 11/1

4:50 pm-12:59 am

1 stop11h 09m

$291

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Sun 10/26

5:00 am-5:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Tue 10/28

4:50 pm-12:59 am

1 stop11h 09m

$291

Los AngelesAguadilla

LAX - BQN

LAXBQN

Los Angeles

Fri 10/10

2:27 pm-2:04 am

1 stop8h 37m

Aguadilla Borinquen

Fri 11/14

3:59 am-1:15 pm

2 stops13h 16m

$317

Los AngelesAguadilla

LAX - BQN

LAXBQN

Los Angeles

Fri 10/3

2:21 pm-2:27 am

1 stop9h 06m

Aguadilla Borinquen

Sat 10/11

2:59 am-1:20 pm

2 stops13h 21m

$355

Los AngelesAguadilla

LAX - BQN

LAXBQN

Los Angeles

Fri 10/10

2:27 pm-10:08 am

1 stop16h 41m

Aguadilla Borinquen

Sat 11/15

4:25 pm-9:01 am

2 stops44h 36m

$364

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Tue 9/30

8:35 pm-12:42 pm

1 stop13h 07m

San Juan Luis Munoz Marin Intl

Wed 10/8

2:25 pm-1:41 am

1 stop14h 16m

$375

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Tue 12/2

11:40 pm-1:17 pm

1 stop9h 37m

San Juan Luis Munoz Marin Intl

Thu 12/4

2:05 am-10:17 am

1 stop12h 12m

$375

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Mon 11/3

5:00 am-6:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Mon 11/10

2:05 am-11:39 am

1 stop13h 34m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 50 results
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Best time to book a flight from Riverside to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Riverside with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Riverside to Puerto Rico

What is the cheapest month to book a flight from Riverside to Puerto Rico?

Currently, September is the cheapest month in which you can book a flight from Riverside to Puerto Rico (average of $254). Flying from Riverside to Puerto Rico in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from R1V to PR?

Find hourly flight availability from Riverside to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Riverside to Puerto Rico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and JetBlue from Riverside to Puerto Rico to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
JetBlue
7.2
Good
2,912 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Spirit Airlines
6.3
Okay
8,015 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Frontier
5.8
Fair
3,172 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Riverside to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Riverside to Puerto Rico?

    Airlines like Frontier, United Airlines, and JetBlue fly from Riverside to Puerto Rico in about 9h 25m. The time it takes to get you to your destination can typically vary by up to 6h 26m. The distance from Riverside to Puerto Rico is about 3380 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Riverside to Puerto Rico?

    The most popular route from Riverside to Puerto Rico is Los Angeles - San Juan Luis Munoz Marin Intl. You may also consider Los Angeles - Ponce Mercedita or Los Angeles - Aguadilla Borinquen.

  • Can I find deals for flights from Riverside to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Riverside to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Puerto Rico.

  • Can I find deals for business class flights from Riverside to Puerto Rico?

    Yes. Cheapflights offers flight deals from Riverside to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Riverside to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Riverside to Puerto Rico (average of $254). Flying from Riverside to Puerto Rico in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Riverside to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Riverside to Puerto Rico

Discover the top 7 airlines that operate flights from Riverside to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$376FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$193Average$349FlexibilityNo cancel feeOn-time65%
DeltaCheapest$247Average$544FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$275Average$583FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$317Average$541FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$331Average$583FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$398Average$630FlexibilityNo cancel feeOn-time63%

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