SAN - SJU

$166 Find Cheap Flights from San Diego to San Juan - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to San Juan departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$302
Typical prices: $365-$880
Delta
Wed 11/11Thu 11/19
SAN - SJU • 1 stop
Cheapest one-way
$166
Typical prices: $193-$341
Frontier
Mon 8/10
SAN - SJU • 2 stops
Top airlines
Cheapest • from $386 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between San Diego and San Juan. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $358 (round-trip)
Shortest trip • 8h 54m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 35% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to San Juan (SAN-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to San Juan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to San Juan

Wed, Nov 11 - Thu, Nov 19
Delta Logo
10:10 pm - 5:20 pm
SAN
-
SJU
15h 10m
1 stop
Delta Logo
1:55 pm - 9:41 pm
SJU
-
SAN
11h 46m
1 stop
$302Delta
Wed, Oct 28 - Tue, Nov 10
Delta Logo
6:15 am - 11:56 pm
SAN
-
SJU
14h 41m
2 stops
Delta Logo
3:10 pm - 9:52 pm
SJU
-
SAN
10h 42m
1 stop
$386Delta
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
9:15 am - 9:05 pm
SAN
-
SJU
8h 50m
1 stop
Southwest Logo
11:50 am - 8:30 pm
SJU
-
SAN
11h 40m
2 stops
$391Southwest
Sat, Sep 26 - Wed, Sep 30
United Airlines Logo
7:41 pm - 3:42 pm
SAN
-
SJU
17h 01m
2 stops
United Airlines Logo
2:00 pm - 8:39 pm
SJU
-
SAN
9h 39m
1 stop
$392United Airlines
Wed, Nov 11 - Thu, Nov 19
Delta Logo
6:20 am - 11:55 pm
SAN
-
SJU
13h 35m
2 stops
Delta Logo
3:10 pm - 9:52 pm
SJU
-
SAN
10h 42m
1 stop
$400Delta
Wed, Nov 11 - Mon, Nov 16
Delta Logo
10:10 pm - 5:20 pm
SAN
-
SJU
15h 10m
1 stop
Delta Logo
2:05 pm - 11:45 pm
SJU
-
SAN
13h 40m
1 stop
$406Delta
Fri, Oct 30 - Sun, Nov 1
United Airlines Logo
6:50 am - 8:00 pm
SAN
-
SJU
10h 10m
1 stop
United Airlines Logo
8:25 am - 5:17 pm
SJU
-
SAN
12h 52m
2 stops
$410United Airlines
Wed, Aug 19 - Wed, Aug 26
Southwest Logo
7:25 am - 10:00 pm
SAN
-
SJU
11h 35m
2 stops
Southwest Logo
6:00 am - 7:35 pm
SJU
-
SAN
16h 35m
1 stop
$411Southwest
Wed, Oct 7 - Sun, Oct 11
Southwest Logo
9:05 am - 11:45 pm
SAN
-
SJU
11h 40m
1 stop
Southwest Logo
5:00 am - 11:10 am
SJU
-
SAN
9h 10m
1 stop
$414Southwest
Fri, Nov 6 - Fri, Nov 13
Southwest Logo
10:35 pm - 11:20 am
SAN
-
SJU
8h 45m
1 stop
Southwest Logo
6:35 am - 6:20 pm
SJU
-
SAN
15h 45m
1 stop
$415Southwest
Booking Insights

KAYAK's insights & trends for San Diego to San Juan flights

Get data-powered insights and trends into flights from San Diego to San Juan to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Diego to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to San Juan Luis Munoz Marin Intl Airport departing in November.

What is the cheapest month to fly from San Diego to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to San Juan Luis Munoz Marin Intl Airport is October, where tickets cost $420 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $722 and $591 respectively.

How far in advance should I book a flight from San Diego to San Juan Luis Munoz Marin Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Diego to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Diego to San Juan Luis Munoz Marin Intl Airport, you should book around 5 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low season

February

Cheapest flight

$166
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 39% increase in price.
Flight from San Diego to San Juan

When to book flights from San Diego to San Juan

Are your dates flexible? Find out the best times to travel from San Diego to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Diego to San Juan flights

  • What is the cheapest flight from San Diego to San Juan Luis Munoz Marin Intl Airport?

    In the last 5 days, the lowest price for a flight from San Diego to San Juan Luis Munoz Marin Intl Airport was $166 for a one-way ticket and $386 for a round-trip.

  • Do I need a passport to fly between San Diego and San Juan?

    Yes, you’ll need a passport to travel to San Juan from San Diego.

  • Which airports will I be using when flying from San Diego to San Juan?

    When flying out of San Diego you will be using San Diego. You will be landing at San Juan, also known as San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from San Diego to San Juan?

    The Boeing 737-800 is the aircraft model that flies most regularly on the San Diego to San Juan flight route.

  • Which airline alliances offer flights from San Diego to San Juan?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between San Diego and San Juan, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to San Juan from San Diego?

    Dallas is the most popular layover city among KAYAK users traveling from San Diego to San Juan.

  • Which is the best airline for flights from San Diego to San Juan, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from San Diego to San Juan are Southwest and Alaska Airlines. With an average price for the route of $573 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $631 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from San Diego to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to San Diego with another airline. Booking your flights between San Diego and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from San Diego to San Juan

 
See real verified KAYAK customer reviews for airlines flying from San Diego to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to San Juan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4242 reviews
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
8.6Crew
Airline reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

10.0 ExcellentK, Jun 2026
SAN - AUS
Read more Southwest reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

There was over a 9 hour delay for one thing after another. A toilet problem, they had to change the brakes, they had to refuel, three pilots times out, etc. We had to sit on the plane at the gate for over 5 hours with no air.

it was great. the crew is exceptional. the flight was on time.

Unfortunately it was not a good experience. There was a rude stewardess.

delay was longer than the entire flight. I didn’t stop flying with delta for this.

I missed it because Alaskan cancelled the original flight to San Diego

There were 5 delays IN TOTAL there and back. And we got a $12 food voucher, RIDICULOUS. Will never fly Alaska again!

Orderly boarding; engaged, attentive and detailed flight crew. Late out of the gate but time recovered during flight; super landing and deplaning.

My flight was several times rescheduled and then finally canceled.

Short trip, was nice to have a drink on the short flight still.

Flight got delayed like 5 times, then they put and ada passenger in the back of the plane.

Flight delayed no communication. The gate was changed so many times.

Alaska is by far the best airline to fly with 😍

Better complimentary food options. At least have a savory option along with the sweet.

Very good flight. Crew was great. No issues and we even arrived early.

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

It was good. The leg room was not great in Row 1.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

There was a loud squeaky sound the whole time we were flying.

When we checked in my friend and I were sitting seperate. By the time we got to boarding, they automatically switched our seats. I really liked that.

I trust Delta. I travel comfortable. The snacks could improve or could go to something as a little sandwich.

Service was professional and quick. Premium economy seat was comfortable given the class

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

Complimentary light meal would be appreciated. But great flight crew service on all legs

The food was terrible this time. Otherwise pleasant, quiet, on-time.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

My flight was completely full. Making me very stressful with people walking around all the time. I believe airlines can do better for entertain people during the flight.

As usual, United scheduling is completely misleading. A 54-minute layover at O’Hare is too short to make a lot of connections, especially since the flight landed “on time” but had to wait on the taxiway 15 minutes for a gate to open up. Then it takes another 10 minutes to exit the plane before one can run to another concourse to catch a connecting flight.

Flight was ok. Unfortunately it was a Boeing 737, which is a cramped / tight airplane. I prefer the Airbus as they are a more comfortable flight experience.

The United website was easy to use and had all the information I needed. I needed to change my flight and it was accomplished easily on line. I was also easily able to upgrade and for a reasonable price. Boarding went smoothly and the flight was in time. The service was good in board but the crew did not seem happy at all. Limited availability of meals - not much choice for purchase and in business class they ran out of one of the meal choices by row 4. .

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

The plane was broken so we had to change planes.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

Uncomfortable seats and flight attendant was rude as she insisted on waking up my husband to ask him if he wanted a drink. When he said that he was sleeping, she replied “without an attitude “. He was seated at 8c

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Airlines must do something with overweight people... Maybe reserve a business class seat for them, or you could pay the consequences if someone overweight seat side by side to you in economy.

Everything you need to know for your flight from San Diego to San Juan

Information on your arrival and departure airports