HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Juan

$136+ Cheap flights from Riverside, CA to San Juan

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJU
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Riverside to San Juan with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Riverside to San Juan are usually found in October or April, booked 13 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Riverside to San Juan

Keep the following information in mind while searching for Riverside to San Juan flight deals. Data was last updated August 1, 2025.

Round-trip from

$281
(Kiwi.com)

One-way from

$136
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$465
From Riverside to San Juan
Search Deals
One-way flight from Riverside to San Juan
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Riverside to San Juan

Cheapest flights from Riverside to San Juan
Explore the most affordable flight options available from Riverside to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Fri 9/129:31 pmLAX - SJU
1 stop22h 52mFrontier
Sun 9/219:07 amSJU - LAX
1 stop26h 05mFrontier
Deal found 7/30$281
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:20 pmLAX - SJU
1 stop9h 14mMultiple Airlines
Sun 10/192:48 pmSJU - LAX
1 stop11h 11mMultiple Airlines
Deal found 7/29$282
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:59 pmLAX - SJU
2 stops12h 12mSpirit Airlines
Fri 9/1211:59 amSJU - LAX
2 stops12h 59mSpirit Airlines
Deal found 7/30$286
This Southwest deal was found by Cheapflights users on 7/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:20 pmLAX - SJU
2 stops11h 05mSouthwest
Wed 12/1711:20 amSJU - LAX
1 stop10h 45mSouthwest
Deal found 7/31$313

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to San Juan 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 August 1, 2025.
Use the filters below to find and compare flights from Riverside to San Juan that are best for you.

Fly from

Riverside

Fly to

San Juan

Route

Depart

Return

Price

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Fri 9/12

9:31 pm-11:23 pm

1 stop22h 52m

San Juan Luis Munoz Marin Intl

Sun 9/21

9:07 am-8:12 am

1 stop26h 05m

$281

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Fri 10/17

2:20 pm-2:34 am

1 stop9h 14m

San Juan Luis Munoz Marin Intl

Sun 10/19

2:48 pm-10:59 pm

1 stop11h 11m

$282

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Fri 9/5

10:59 pm-2:11 pm

2 stops12h 12m

San Juan Luis Munoz Marin Intl

Fri 9/12

11:59 am-9:58 pm

2 stops12h 59m

$286

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Sun 9/21

10:59 pm-2:11 pm

2 stops12h 12m

$136

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Tue 9/30

12:56 am-3:42 pm

1 stop11h 46m

$138

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Thu 8/7

1:57 pm-12:32 am

1 stop31h 35m

$141

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Tue 9/30

7:25 pm-1:16 pm

2 stops14h 51m

$143

Los AngelesSan Juan

LAX - SJU

LAXSJU

Los Angeles

Tue 9/9

7:30 am-10:32 pm

1 stop12h 02m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Riverside to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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 San Juan

How far ahead should I book a flight from Riverside to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to San Juan. Price data was last updated on July 25, 2025.

The best time to book flights from Riverside to San Juan is 13 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Riverside to San Juan?

Currently, September is the cheapest month in which you can book a flight from Riverside to San Juan (average of $254). Flying from Riverside to San Juan 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 SJU?

Find hourly flight availability from Riverside to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2025.

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

What is the cheapest day to fly from Riverside to San Juan?

Use this chart to determine the cheapest time to fly round-trip from Riverside to San Juan. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Riverside to San Juan flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated August 1, 2025.
Read through reviews of airlines operating flights from Riverside to San Juan, such as Delta, United Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,904 reviews
Delta
8.0
Very good
7,983 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.3
Good
2,915 reviews
Delta
8.0
Very good
7,983 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Spirit Airlines
6.3
Okay
8,054 reviews
Delta
8.0
Very good
7,983 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Frontier
5.9
Fair
3,241 reviews
Delta
8.0
Very good
7,983 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

  • What are the cheapest airlines to fly from Riverside to San Juan one-way?

    $136 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Southwest and Frontier, with prices starting from $138 and $141, respectively.

  • Can I find deals for flights from Riverside to San Juan that include hotel bookings?

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

  • How can I find direct flights from Riverside to San Juan?

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

  • Can I find deals for business class flights from Riverside to San Juan?

    Yes. Cheapflights offers flight deals from Riverside to San Juan 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 San Juan?

    Currently, September is the cheapest month in which you can book a flight from Riverside to San Juan (average of $254). Flying from Riverside to San Juan 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Riverside to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Luis Munoz Marin Intl flights
San Francisco to Luis Munoz Marin Intl flights
Ontario to Luis Munoz Marin Intl flights
San Diego to Luis Munoz Marin Intl flights
Burbank to Luis Munoz Marin Intl flights
Las Vegas to Luis Munoz Marin Intl flights
San Jose to Luis Munoz Marin Intl flights
Santa Ana to Luis Munoz Marin Intl flights
Sacramento to Luis Munoz Marin Intl flights
Oakland to Luis Munoz Marin Intl flights
Fresno to Luis Munoz Marin Intl flights
Palm Springs to Luis Munoz Marin Intl flights
Reno to Luis Munoz Marin Intl flights
Los Angeles to Ponce flights
Los Angeles to Aguadilla flights
Medford to Luis Munoz Marin Intl flights
San Francisco to Aguadilla flights
San Francisco to Ponce flights
Santa Rosa to Luis Munoz Marin Intl flights
San Diego to Aguadilla flights
Long Beach to Luis Munoz Marin Intl flights
San Jose to Aguadilla flights
San Luis Obispo to Luis Munoz Marin Intl flights
San Francisco to Culebra flights
San Jose to Culebra flights
Los Angeles to Vieques flights
Los Angeles to Mayagüez flights
Los Angeles to Culebra flights
San Francisco to Vieques flights
Las Vegas to Ponce flights
Las Vegas to Aguadilla flights
San Jose to Mayagüez flights
San Jose to Vieques flights
Sacramento to Aguadilla flights
Sacramento to Culebra flights
San Francisco to Mayagüez flights
Santa Ana to Aguadilla flights
Ontario to Aguadilla flights
San Diego to Ponce flights
San Diego to Culebra flights
Reno to Aguadilla flights
Oakland to Aguadilla flights
Merced to Luis Munoz Marin Intl flights

Top 7 airlines flying from Riverside to San Juan

Discover the top 7 airlines that operate flights from Riverside to San Juan. 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$354FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$221Average$376FlexibilityNo cancel feeOn-time65%
DeltaCheapest$247Average$547FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$281Average$494FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$317Average$596FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$329Average$581FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$404Average$627FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.