HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$141+ Cheap flights from San Juan to San Diego (SAN)

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SAN
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Juan to San Diego 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 San Juan to San Diego are usually found in October or September, booked 17 days in advance, depart on a Thursday or Tuesday and return on a Saturday

Cheap flight deals from San Juan to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 3, 2025.

Round-trip from

$329
(United Airlines)

One-way from

$141
(eDestinos)

Popular in

April

Cheapest in

October

Average price

$520
From San Juan to San Diego
Search Deals
One-way flight from San Juan to San Diego
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from San Juan to San Diego

Cheapest flights from San Juan to San Diego
Explore the most affordable flight options available from San Juan to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:05 amSJU - SAN
1 stop11h 54mUnited Airlines
Wed 12/106:30 amSAN - SJU
2 stops11h 52mUnited Airlines
Deal found 11/2$329
This American Airlines deal was found by Cheapflights users on 11/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:00 amSJU - SAN
1 stop15h 01mAmerican Airlines
Wed 12/1010:23 pmSAN - SJU
1 stop19h 42mAmerican Airlines
Deal found 11/2$334
This American Airlines deal was found by Cheapflights users on 11/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:39 pmSJU - SAN
1 stop11h 06mAmerican Airlines
Mon 1/510:44 pmSAN - SJU
1 stop10h 53mAmerican Airlines
Deal found 11/2$381
This Southwest deal was found by Cheapflights users on 11/2. 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.
Fri 12/55:45 amSJU - SAN
2 stops12h 40mSouthwest
Wed 12/107:35 amSAN - SJU
2 stops10h 30mSouthwest
Deal found 11/2$399
This eDestinos deal was found by Cheapflights users on 11/2. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:22 pmSJU - SAN
2 stops34h 37mFrontier
Mon 1/56:25 amSAN - SJU
2 stops24h 14mFrontier
Deal found 11/2$449
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/217:11 amSJU - SAN
2 stops36h 16mMultiple Airlines
Tue 11/256:25 amSAN - SJU
1 stop13h 30mMultiple Airlines
Deal found 11/2$452
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:25 amSJU - SAN
1 stop16h 34mAmerican Airlines
Fri 12/510:23 pmSAN - SJU
1 stop10h 42mAmerican Airlines
Deal found 11/3$453
This American Airlines deal was found by Cheapflights users on 11/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:25 amSJU - SAN
1 stop16h 34mAmerican Airlines
Wed 11/2610:35 pmSAN - SJU
1 stop13h 29mAmerican Airlines
Deal found 11/2$460
This American Airlines deal was found by Cheapflights users on 11/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:25 amSJU - SAN
1 stop16h 37mAmerican Airlines
Thu 1/16:15 amSAN - SJU
1 stop11h 50mAmerican Airlines
Deal found 11/2$461
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:05 amSJU - SAN
1 stop11h 54mUnited Airlines
Thu 1/15:10 pmSAN - SJU
1 stop9h 01mUnited Airlines
Deal found 11/2$490

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan to San Diego 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 November 3, 2025.
Use the filters below to find and compare flights from San Juan to San Diego that are best for you.

Fly from

San Juan

Fly to

San Diego

Route

Depart

Return

Price

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 12/4

2:05 am-9:59 am

1 stop11h 54m

San Diego

Wed 12/10

6:30 am-10:22 pm

2 stops11h 52m

$329

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 12/5

7:00 am-6:01 pm

1 stop15h 01m

San Diego

Wed 12/10

10:23 pm-10:05 pm

1 stop19h 42m

$334

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 2/12

6:00 am-6:55 pm

1 stop16h 55m

San Diego

Sun 2/15

3:23 pm-5:00 am

1 stop9h 37m

$374

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Wed 2/11

6:10 am-2:20 pm

1 stop12h 10m

San Diego

Sun 2/15

6:50 am-12:05 am

1 stop13h 15m

$382

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 2/10

2:05 am-3:36 pm

2 stops17h 31m

San Diego

Sun 2/15

3:40 pm-6:11 am

1 stop10h 31m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 1/16

8:10 am-3:40 pm

1 stop11h 30m

San Diego

Tue 1/20

8:10 am-10:22 pm

1 stop10h 12m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 1/16

8:10 am-3:40 pm

1 stop11h 30m

San Diego

Wed 1/21

6:30 am-12:36 am

2 stops14h 06m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 12/5

5:45 am-1:20 pm

2 stops11h 35m

San Diego

Wed 12/10

7:35 am-10:05 pm

2 stops10h 30m

$399

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 12/16

1:55 pm-11:35 pm

1 stop13h 40m

$148

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 1/27

7:30 am-8:50 pm

2 stops17h 20m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 17 results
1
2

Best time to book a flight from San Juan to San Diego

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Juan to San Diego. Price data was last updated on October 31, 2025.

Booking 17 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from San Juan to San Diego (average of $155). Flying from San Juan to San Diego in April is currently the most expensive (average of $401). 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 SJU to SAN?

Find hourly flight availability from San Juan to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s typically best to fly out from San Juan to San Diego at noon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

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

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated November 3, 2025.
Read through reviews of airlines operating flights from San Juan to San Diego, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,235 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
8,001 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,997 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
11,036 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
JetBlue
7.2
Good
2,907 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

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

  • What airport do you fly into for flights to San Diego from San Juan?

    Located just 2.6 mi from the city center, San Diego is the airport most travelers will use when flying to San Diego from San Juan. Booking flights from San Juan to San Diego (SAN) should be relatively easy as there are 0 daily inbound flights from San Juan from 6 different airlines.

  • How long is the flight from San Juan to San Diego?

    For as low as $329, United Airlines can have you in San Diego from San Juan in 11h 54m. The distance between San Juan and San Diego is about 3304 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Juan to San Diego round-trip?

    Currently priced at $310, American Airlines will fly you from San Juan to San Diego and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $341 and $351, respectively. American Airlines is currently priced 37% below the average price you’ll pay for this route.

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

    $148 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $187 and $187, respectively.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from San Juan to San Diego (average of $155). Flying from San Juan to San Diego in April is currently the most expensive (average of $401). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
National City

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 San Juan to San Diego

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

Top 6 airlines flying from San Juan to San Diego

Discover the top 6 airlines that operate flights from San Juan to San Diego. 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$310Average$489FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$341Average$492FlexibilityNo cancel feeOn-time69%
DeltaCheapest$351Average$537FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$408Average$489FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$422Average$483FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$481Average$574FlexibilityNo cancel feeOn-time75%

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.