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San Juan

$98+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SJU
Jul 14 — Jul 211
Mon 7/14
Mon 7/21
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to San Juan are usually found in September or January, booked 19 days in advance, depart on a Saturday or Tuesday and return on a Thursday

Cheap 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 July 9, 2025.

Round-trip from

$368
(FlightHub)

One-way from

$121
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$550
From San Diego to San Juan
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One-way flight from San Diego to San Juan
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Highest demand for flights based on searches. 7% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 9, 2025.

This United Airlines deal was found by Cheapflights users on 7/9. 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.
Tue 9/96:15 amSAN - SJU
1 stop11h 23mUnited Airlines
Mon 9/151:05 amSJU - SAN
2 stops13h 35mUnited Airlines
Deal found 7/9$365
This FlightHub deal was found by Cheapflights users on 7/9. 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.
Thu 7/319:40 pmSAN - SJU
2 stops47h 42mSpirit Airlines
Tue 8/54:43 pmSJU - SAN
2 stops28h 12mSpirit Airlines
Deal found 7/9$368
This American Airlines deal was found by Cheapflights users on 7/9. 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 11/129:53 amSAN - SJU
1 stop9h 38mAmerican Airlines
Sun 11/236:30 amSJU - SAN
1 stop16h 00mAmerican Airlines
Deal found 7/9$383
This Southwest deal was found by Cheapflights users on 7/7. 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.
Tue 9/96:25 amSAN - SJU
1 stop13h 05mSouthwest
Tue 9/165:00 amSJU - SAN
2 stops12h 20mSouthwest
Deal found 7/7$408

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 July 9, 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 9/9

6:15 am-8:38 pm

1 stop11h 23m

San Juan Luis Munoz Marin Intl

Mon 9/15

1:05 am-11:40 am

2 stops13h 35m

$365

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Thu 7/31

9:40 pm-12:22 am

2 stops47h 42m

San Juan Luis Munoz Marin Intl

Tue 8/5

4:43 pm-5:55 pm

2 stops28h 12m

$368

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Wed 11/12

9:53 am-11:31 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Sun 11/23

6:30 am-6:30 pm

1 stop16h 00m

$383

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Tue 9/9

6:25 am-10:30 pm

1 stop13h 05m

San Juan Luis Munoz Marin Intl

Tue 9/16

5:00 am-2:20 pm

2 stops12h 20m

$408

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Tue 8/5

6:15 am-11:32 am

2 stops26h 17m

$98

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Mon 9/22

10:45 pm-11:11 am

1 stop9h 26m

$121

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Tue 11/18

7:00 am-12:36 am

2 stops13h 36m

$166

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Mon 7/28

7:00 pm-12:28 pm

2 stops38h 28m

$205

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Wed 7/30

6:15 am-11:25 pm

1 stop14h 10m

$217

San DiegoSan Juan

SAN - SJU

SANSJU

San Diego

Mon 7/14

1:12 pm-12:28 pm

2 stops20h 16m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 11 results
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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 June 27, 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 19 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, September is the cheapest month in which you can book a flight from San Diego to San Juan (average of $254). Flying from San Diego 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 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 July 9, 2025.

It’s typically best to fly out from San Diego to San Juan at noon. Doing so could potentially save you 15% on the flight price compared to flying in the afternoon, 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 September 22, 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 afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from San Diego to San Juan?

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 July 9, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and United Airlines 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
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,253 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,843 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Spirit Airlines
6.3
Okay
8,060 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 $368. Other airlines that can offer you cheap pricing are American Airlines, from $384, and United Airlines, from $386. These flights start at 29% 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?

    $121 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Spirit Airlines and Alaska Airlines, with prices starting from $138 and $217, 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 Reunion Tower. American Airlines Center, Dallas World Aquarium, and Reunion Tower can be visited by traveling about 15.0 mi, 15.5 mi, and 15.6 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 $51.

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

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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 July 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$168Average$322FlexibilityNo cancel feeOn-time65%
FrontierCheapest$225Average$418FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$280Average$435FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$318Average$480FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$320Average$527FlexibilityNo cancel feeOn-time71%
DeltaCheapest$377Average$640FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$383Average$586FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$479Average$583FlexibilityNo cancel feeOn-time75%

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