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$129+ Cheap flights from San Diego (SAN) 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SJU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to San Juan are usually found in January or October, booked 63 days in advance, depart on a Saturday or Tuesday and return on a Thursday

Cheap flight deals from San Diego to San Juan

Cheapest flights from San Diego to San Juan
Explore the most affordable flight options available from San Diego to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/10. 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 12/316:25 amSAN - SJU
1 stop14h 08mMultiple Airlines
Sat 1/107:10 amSJU - SAN
2 stops20h 06mMultiple Airlines
Deal found 12/10$359
This eDestinos deal was found by Cheapflights users on 12/10. 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.
Wed 12/314:47 pmSAN - SJU
2 stops28h 37mFrontier
Sat 1/107:35 amSJU - SAN
2 stops18h 23mFrontier
Deal found 12/10$388
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/316:25 amSAN - SJU
1 stop20h 09mFrontier
Wed 1/77:05 pmSJU - SAN
2 stops32h 54mFrontier
Deal found 12/11$400
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/313:00 pmSAN - SJU
1 stop11h 11mUnited Airlines
Tue 1/133:46 pmSJU - SAN
1 stop10h 10mUnited Airlines
Deal found 12/11$409
This Delta deal was found by Cheapflights users on 12/10. 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.
Tue 12/309:45 pmSAN - SJU
1 stop10h 11mDelta
Thu 1/82:15 pmSJU - SAN
1 stop13h 49mDelta
Deal found 12/10$419
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 12/309:14 pmSAN - SJU
2 stops19h 13mMultiple Airlines
Thu 1/87:44 pmSJU - SAN
1 stop31h 52mMultiple Airlines
Deal found 12/10$432
This eDestinos deal was found by Cheapflights users on 12/10. 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 12/295:31 pmSAN - SJU
2 stops28h 03mMultiple Airlines
Sun 1/116:30 amSJU - SAN
2 stops41h 07mMultiple Airlines
Deal found 12/10$445
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 12/309:14 pmSAN - SJU
2 stops25h 36mFrontier
Wed 1/77:05 pmSJU - SAN
1 stop32h 31mFrontier
Deal found 12/10$452
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Wed 12/316:20 amSAN - SJU
1 stop13h 39mAmerican Airlines
Sat 1/103:38 pmSJU - SAN
1 stop10h 48mAmerican Airlines
Deal found 12/10$479
This eDestinos deal was found by Cheapflights users on 12/11. 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.
Tue 12/231:06 pmSAN - SJU
2 stops32h 18mMultiple Airlines
Wed 1/217:07 amSJU - SAN
1 stop11h 07mMultiple Airlines
Deal found 12/11$497

Find flight deals from San Diego to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to San Juan (PR1). 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 December 12, 2025.

Round-trip from

$344
(Southwest)

One-way from

$129
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$681
From San Diego to San Juan
Search Deals
One-way flight from San Diego to San Juan
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 12, 2025.
Use the filters below to find and compare flights from San Diego to San Juan that are best for you.

Fly from

San Diego

Fly to

San Juan

Route

Depart

Return

Price

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Tue 4/14

7:25 am-9:05 pm

2 stops10h 40m

San Juan Luis Munoz Marin Intl

Sun 4/19

9:45 pm-8:55 am

1 stop14h 10m

$344

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Sat 2/21

6:35 pm-9:55 am

2 stops11h 20m

San Juan Luis Munoz Marin Intl

Wed 2/25

5:40 am-1:20 pm

2 stops11h 40m

$344

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Wed 4/15

7:35 pm-9:10 am

2 stops10h 35m

San Juan Luis Munoz Marin Intl

Sun 4/19

9:45 pm-8:55 am

1 stop14h 10m

$344

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Sat 2/7

7:45 pm-11:20 am

2 stops11h 35m

San Juan Luis Munoz Marin Intl

Wed 2/11

5:40 am-2:40 pm

2 stops13h 00m

$367

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Sat 2/28

10:05 pm-11:41 am

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Sun 3/8

1:30 am-8:39 am

1 stop10h 09m

$373

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Mon 3/30

3:25 pm-9:20 am

2 stops14h 55m

San Juan Luis Munoz Marin Intl

Wed 4/8

8:20 am-6:15 pm

2 stops12h 55m

$377

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Sun 5/31

5:42 pm-5:30 am

1 stop8h 48m

San Juan Luis Munoz Marin Intl

Fri 6/5

1:05 am-11:22 am

2 stops13h 17m

$385

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Sun 1/25

6:55 pm-1:17 pm

2 stops14h 22m

San Juan Luis Munoz Marin Intl

Thu 1/29

3:46 pm-9:56 pm

1 stop10h 10m

$385

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Thu 3/12

3:38 pm-5:28 am

1 stop10h 50m

San Juan Luis Munoz Marin Intl

Tue 3/17

1:30 am-1:06 pm

1 stop14h 36m

$400

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Mon 1/5

10:44 pm-1:37 pm

1 stop10h 53m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 19 results
1
2

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Diego to San Juan. Price data was last updated on December 5, 2025.

The price you pay for your flight from San Diego to San Juan may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from San Diego to San Juan (average of $137). Flying from San Diego to San Juan in July is currently the most expensive (average of $365). 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 SAN to SJU?

Find hourly flight availability from San Diego 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 12, 2025.

It’s typically best to fly out from San Diego to San Juan in the afternoon. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

Travelers seeking maximum savings on their San Diego to San Juan flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday at noon 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 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from San Diego to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,253 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from San Diego 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 airport do you fly from for flights from San Diego to San Juan?

    San Diego (SAN) is the airport you will fly out of if you book a flight from San Diego to San Juan. You should not have trouble finding flights to San Juan from San Diego; the airport handles an average of 0 outbound flights to San Juan per day. You should also have plenty of airline options to choose from since 8 airlines have flights from the San Diego airport to San Juan. It is only a 2.6 mi journey to San Diego (SAN) from San Diego’s city center.

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

    There are many flights that can get you from San Diego to San Juan in 9h 36m. Fly via Southwest or American Airlines to get the fastest option. There are 3304 mi between San Diego and San Juan. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from San Diego to San Juan round-trip from $125. Other airlines that can offer you cheap pricing are Delta, from $202, and Frontier, from $222. These flights start at 75% lower than the current average price 3 months from now.

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

    $65 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 United Airlines and American Airlines, with prices starting from $148 and $166, respectively.

  • Where are the most common layover locations when flying from San Diego to San Juan?

    The most popular layover on flights from San Diego to San Juan is Dallas.

  • What are some popular things to do or see while on a layover in Dallas?

    If you're on a layover in Dallas and looking for things to do, consider visiting American Airlines Center, Dallas World Aquarium, or Dos Equis Pavilion. American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion can be visited by traveling about 15.0 mi, 15.5 mi, and 18.3 mi respectively from Dallas/Fort Worth. Those on a layover in Dallas in need of a rental car can book one at Dallas/Fort Worth for about $50.

  • Where are the least popular layover locations for San Diego to San Juan flights?

    The least popular layover on flights from San Diego to San Juan is Miami.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from San Diego to San Juan (average of $137). Flying from San Diego to San Juan in July is currently the most expensive (average of $365). 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.

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Top 8 airlines flying from San Diego to San Juan

Discover the top 8 airlines that operate flights from San Diego 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$125Average$361FlexibilityNo cancel feeOn-time65%
FrontierCheapest$225Average$507FlexibilityNo cancel feeOn-time62%
DeltaCheapest$278Average$545FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$295Average$490FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$320Average$522FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$321Average$491FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$382Average$599FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$474Average$585FlexibilityNo cancel feeOn-time75%

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