$147+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJU
Jan 17 — Jan 241
1 adult, Economy
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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 35 days in advance, depart on a Tuesday or Monday and return on a Wednesday
Cheap flight deals from Riverside to San Juan
Cheapest flights from Riverside to San JuanExplore 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 December 18, 2025.
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 December 18, 2025.
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:37 amLAX - SJU
1 stop12h 57mFrontier
Wed 1/77:35 amSJU - LAX
1 stop10h 44mFrontier
Deal found 12/17![Frontier logo]()
$304
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:59 pmLAX - SJU
1 stop12h 00mFrontier
Wed 1/77:35 amSJU - LAX
1 stop10h 44mFrontier
Deal found 12/17![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2911:59 pmLAX - SJU
1 stop22h 51mFrontier
Wed 1/77:35 amSJU - LAX
1 stop10h 44mFrontier
Deal found 12/16![Frontier logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/308:37 amLAX - SJU
1 stop12h 57mMultiple Airlines
Fri 1/910:47 pmSJU - LAX
2 stops36h 28mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/308:37 amLAX - SJU
1 stop12h 57mFrontier
Sat 1/106:15 amSJU - LAX
2 stops15h 33mFrontier
Deal found 12/16![Frontier logo]()
$314
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:37 amLAX - SJU
1 stop12h 57mFrontier
Sun 1/117:35 amSJU - LAX
1 stop10h 32mFrontier
Deal found 12/16![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/3111:59 pmLAX - SJU
1 stop12h 00mFrontier
Sat 1/106:15 amSJU - LAX
2 stops15h 33mFrontier
Deal found 12/16![Frontier logo]()
$319
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:59 pmLAX - SJU
1 stop12h 00mFrontier
Sun 1/117:35 amSJU - LAX
1 stop10h 32mFrontier
Deal found 12/16![Frontier logo]()
$322
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:37 amLAX - SJU
1 stop13h 00mFrontier
Thu 12/2510:33 amSJU - LAX
1 stop11h 30mFrontier
Deal found 12/16![Frontier logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2311:59 pmLAX - SJU
1 stop16h 28mFrontier
Thu 12/257:00 amSJU - LAX
1 stop11h 03mFrontier
Deal found 12/16![Frontier logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/2211:59 pmLAX - SJU
1 stop9h 35mFrontier
Thu 12/2510:33 amSJU - LAX
1 stop11h 30mFrontier
Deal found 12/17![Frontier logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2411:59 pmLAX - SJU
1 stop9h 35mFrontier
Thu 12/259:37 pmSJU - LAX
1 stop24h 26mFrontier
Deal found 12/16![Frontier logo]()
$332
Find 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 December 18, 2025.
Round-trip from | $287 (Kiwi.com) |
|---|---|
One-way from | $147 (Booking.com) |
Popular in | December |
Cheapest in | October |
Average price | $574 |
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 December 18, 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
Wed 1/7
2:38 pm-12:27 pm
1 stop17h 49m
San Juan Luis Munoz Marin Intl
Wed 1/21
7:44 pm-7:15 am
1 stop15h 31m
$294
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Thu 1/22
8:30 am-11:45 pm
1 stop11h 15m
San Juan Luis Munoz Marin Intl
Fri 2/6
7:00 am-4:58 pm
1 stop13h 58m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Sun 1/25
10:20 pm-2:10 pm
1 stop11h 50m
San Juan Luis Munoz Marin Intl
Wed 2/4
7:00 am-2:25 pm
1 stop11h 25m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Tue 1/27
9:55 pm-1:06 pm
1 stop11h 11m
San Juan Luis Munoz Marin Intl
Wed 2/4
7:00 am-2:25 pm
1 stop11h 25m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Sat 1/24
10:20 pm-2:10 pm
1 stop11h 50m
San Juan Luis Munoz Marin Intl
Wed 2/4
7:00 am-6:53 pm
1 stop15h 53m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Thu 2/19
8:25 am-11:58 pm
1 stop11h 33m
San Juan Luis Munoz Marin Intl
Wed 2/25
7:00 am-4:49 pm
2 stops13h 49m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Wed 2/11
6:00 am-8:58 pm
1 stop10h 58m
San Juan Luis Munoz Marin Intl
Tue 2/24
7:30 am-1:22 pm
1 stop9h 52m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Fri 2/20
7:20 am-11:58 pm
1 stop12h 38m
San Juan Luis Munoz Marin Intl
Wed 2/25
7:00 am-4:49 pm
2 stops13h 49m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Thu 2/19
8:25 am-11:58 pm
1 stop11h 33m
San Juan Luis Munoz Marin Intl
Tue 2/24
7:00 am-4:49 pm
2 stops13h 49m
$295
Los AngelesSan Juan
LAX - SJU
LAXSJU
Los Angeles
Wed 1/21
8:00 am-11:59 pm
1 stop11h 59m
San Juan Luis Munoz Marin Intl
Thu 2/5
11:06 am-8:58 pm
1 stop13h 52m
$300
Showing 1-10 of 21 results
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 December 12, 2025.
The best time to book flights from Riverside to San Juan is 23 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, April is the cheapest month in which you can book a flight from Riverside to San Juan (average of $137). Flying from Riverside to San Juan in November is currently the most expensive (average of $286). 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 December 18, 2025.
One of the essential ways to save on airfare from Riverside to San Juan is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 52% on airfare.
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 Tuesday evenings 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 December 18, 2025.
Read through reviews of airlines operating flights from Riverside to San Juan, such as United Airlines, American Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Food
6.6
Entertainment
7.1
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Food
6.6
Entertainment
7.1
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Food
6.6
Entertainment
7.1
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Food
6.6
Entertainment
7.1
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Food
6.6
Entertainment
7.1
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Food
6.6
Entertainment
7.1
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
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.
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Alternative routes for Riverside to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
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 December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$73 | Average$401 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$226 | Average$373 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$272 | Average$519 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$292 | Average$569 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$307 | Average$504 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$328 | Average$583 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$388 | Average$637 | FlexibilityNo cancel fee | On-time63% |