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$148+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SAN
Oct 18 — Oct 251
Sat 10/18
Sat 10/25
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to San Diego are usually found in September or January, 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 September 18, 2025.

Round-trip from

$287
(Frontier)

One-way from

$148
(United Airlines)

Popular in

February

Cheapest in

September

Average price

$460
From San Juan to San Diego
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One-way flight from San Juan to San Diego
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Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 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 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 September 18, 2025.

This Frontier deal was found by Cheapflights users on 9/17. 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.
Fri 10/249:06 pmSJU - SAN
2 stops19h 22mFrontier
Sun 11/97:59 pmSAN - SJU
2 stops17h 55mFrontier
Deal found 9/17$287
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:46 pmSJU - SAN
1 stop13h 28mDelta
Tue 10/286:15 amSAN - SJU
1 stop12h 44mDelta
Deal found 9/16$295
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:00 pmSJU - SAN
1 stop19h 26mAmerican Airlines
Sat 11/89:54 pmSAN - SJU
1 stop19h 04mAmerican Airlines
Deal found 9/17$297
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/11:50 pmSJU - SAN
2 stops12h 09mAmerican Airlines
Sat 11/1510:49 pmSAN - SJU
1 stop13h 04mAmerican Airlines
Deal found 9/17$300
This Frontier deal was found by Cheapflights users on 9/16. 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.
Fri 10/249:06 pmSJU - SAN
2 stops19h 22mFrontier
Mon 10/277:43 pmSAN - SJU
2 stops19h 11mFrontier
Deal found 9/16$317
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:05 amSJU - SAN
1 stop12h 00mUnited Airlines
Tue 11/187:00 amSAN - SJU
1 stop10h 00mUnited Airlines
Deal found 9/17$321
This Frontier deal was found by Cheapflights users on 9/16. 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.
Fri 10/246:22 amSJU - SAN
2 stops20h 28mFrontier
Thu 10/306:25 amSAN - SJU
2 stops16h 07mFrontier
Deal found 9/16$327
This Frontier deal was found by Cheapflights users on 9/17. 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.
Fri 10/179:06 pmSJU - SAN
2 stops19h 22mFrontier
Sat 10/252:24 pmSAN - SJU
2 stops20h 45mFrontier
Deal found 9/17$331
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/252:31 pmSJU - SAN
1 stop11h 43mDelta
Wed 10/298:00 amSAN - SJU
1 stop10h 59mDelta
Deal found 9/16$334
This Frontier deal was found by Cheapflights users on 9/16. 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.
Fri 10/249:06 pmSJU - SAN
2 stops19h 22mFrontier
Fri 10/313:59 pmSAN - SJU
2 stops22h 55mFrontier
Deal found 9/16$345
This Frontier deal was found by Cheapflights users on 9/17. 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.
Fri 10/249:06 pmSJU - SAN
2 stops19h 22mFrontier
Sat 11/15:28 pmSAN - SJU
2 stops18h 14mFrontier
Deal found 9/17$346

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 September 18, 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

Fri 11/14

2:05 am-10:05 am

1 stop12h 00m

San Diego

Tue 11/18

7:00 am-9:00 pm

1 stop10h 00m

$321

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Sat 11/15

6:25 am-6:59 pm

1 stop16h 34m

San Diego

Tue 11/18

10:23 pm-3:47 pm

2 stops13h 24m

$334

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Wed 10/29

1:05 am-12:45 pm

2 stops14h 40m

San Diego

Sat 11/8

10:00 pm-1:17 pm

1 stop11h 17m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 10/24

1:05 am-11:40 am

2 stops13h 35m

San Diego

Sat 11/8

10:00 pm-1:17 pm

1 stop11h 17m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 10/24

1:05 am-9:33 am

1 stop11h 28m

San Diego

Mon 11/3

10:00 pm-1:17 pm

1 stop11h 17m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 10/28

7:10 am-4:02 pm

1 stop11h 52m

San Diego

Sat 11/8

10:00 pm-1:17 pm

1 stop11h 17m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 10/7

1:05 am-9:33 am

1 stop11h 28m

San Diego

Tue 10/14

10:30 pm-12:00 pm

1 stop10h 30m

$385

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 11/18

6:25 am-6:59 pm

1 stop16h 34m

San Diego

Tue 12/16

6:30 am-11:52 pm

1 stop13h 22m

$419

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 10/21

1:06 pm-11:47 pm

1 stop13h 41m

San Diego

Wed 10/29

6:15 am-9:59 pm

1 stop12h 44m

$420

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 10/7

1:05 am-9:33 am

1 stop11h 28m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 16 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 September 12, 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, August is the cheapest month in which you can book a flight from San Juan to San Diego (average of $286). Flying from San Juan to San Diego in March is currently the most expensive (average of $366). 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 September 18, 2025.

It’s typically best to fly out from San Juan to San Diego at noon. Doing so could potentially save you 16% 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 September 18, 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
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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
2,914 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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 $321, United Airlines can have you in San Diego from San Juan in 12h. 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 38% below the average price you’ll pay for this route.

  • 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, August is the cheapest month in which you can book a flight from San Juan to San Diego (average of $286). Flying from San Juan to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City

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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 September 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$310Average$495FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$341Average$499FlexibilityNo cancel feeOn-time69%
DeltaCheapest$351Average$568FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$398Average$459FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$408Average$489FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$464Average$574FlexibilityNo cancel feeOn-time75%

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