SJU - SAN

$179 Find Cheap Flights from San Juan to San Diego - 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 Juan to San Diego departing on 8/26. 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: $425-$512
Delta
Thu 9/10Tue 9/15
SJU - SAN • 1 stop
Cheapest one-way
$179
Typical prices: $271-$383
Frontier
Wed 8/26
SJU - SAN • 2 stops
Top airlines
Cheapest • from $302 (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 Juan and San Diego. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $295 (round-trip)
Shortest trip • 9h 23m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
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We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to San Diego 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 Juan to San Diego

Thu, Sep 10 - Tue, Sep 15
Delta Logo
1:16 pm - 11:34 pm
SJU
-
SAN
13h 18m
1 stop
Delta Logo
7:30 am - 11:48 pm
SAN
-
SJU
13h 18m
1 stop
$302Delta
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
2:20 pm - 9:24 pm
SJU
-
SAN
10h 04m
1 stop
United Airlines Logo
9:05 pm - 11:57 am
SAN
-
SJU
11h 52m
1 stop
$323United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
1:00 am - 11:35 am
SJU
-
SAN
13h 35m
2 stops
United Airlines Logo
6:15 am - 8:38 pm
SAN
-
SJU
11h 23m
2 stops
$331United Airlines
Thu, Sep 17 - Mon, Sep 21
Southwest Logo
3:20 pm - 10:45 pm
SJU
-
SAN
10h 25m
1 stop
Southwest Logo
6:35 am - 10:50 pm
SAN
-
SJU
13h 15m
1 stop
$344Southwest
Wed, Aug 26 - Wed, Sep 16
Southwest Logo
6:00 am - 4:15 pm
SJU
-
SAN
13h 15m
1 stop
Southwest Logo
7:25 am - 10:00 pm
SAN
-
SJU
11h 35m
2 stops
$349Southwest
Sat, Aug 22 - Wed, Aug 26
JetBlue Logo
7:00 am - 5:05 pm
SJU
-
SAN
13h 05m
1 stop
JetBlue Logo
7:30 am - 11:52 pm
SAN
-
SJU
13h 22m
1 stop
$372JetBlue
Wed, Sep 9 - Mon, Sep 14
United Airlines Logo
1:00 am - 11:35 am
SJU
-
SAN
13h 35m
2 stops
United Airlines Logo
6:15 am - 8:38 pm
SAN
-
SJU
11h 23m
2 stops
$373United Airlines
Wed, Aug 19 - Tue, Sep 15
American Airlines Logo
7:30 am - 6:18 pm
SJU
-
SAN
13h 48m
2 stops
American Airlines Logo
10:46 pm - 3:40 pm
SAN
-
SJU
13h 54m
2 stops
$381American Airlines
Wed, Sep 16 - Sun, Sep 20
Southwest Logo
11:50 am - 8:45 pm
SJU
-
SAN
11h 55m
2 stops
Southwest Logo
9:00 am - 10:45 pm
SAN
-
SJU
10h 45m
1 stop
$382Southwest
Wed, Sep 16 - Sun, Sep 20
United Airlines Logo
7:00 am - 5:26 pm
SJU
-
SAN
13h 26m
2 stops
United Airlines Logo
10:25 pm - 1:45 pm
SAN
-
SJU
12h 20m
1 stop
$386United Airlines
Booking Insights

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

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

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

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 Juan Luis Munoz Marin Intl Airport to San Diego departing in September.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to San Diego, 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 Juan Luis Munoz Marin Intl Airport to San Diego is October, where tickets cost $385 (return) on average. On the other hand, the most expensive months are March and July, where the average cost of round-trip tickets is $566 and $554 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to San Diego, 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 Juan Luis Munoz Marin Intl Airport to San Diego, you should book around 3 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$179
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from San Juan to San Diego

When to book flights from San Juan to San Diego

Are your dates flexible? Find out the best times to travel from San Juan to San Diego 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 Juan to San Diego flights

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

    In the last 5 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to San Diego was $179 for a one-way ticket and $302 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Juan and on arrival in San Diego.

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

    San Juan and San Diego are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at San Diego.

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

    We unfortunately don’t have that data for this specific route.

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

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

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

    The two airlines most popular with KAYAK users for flights from San Juan to San Diego are Southwest and Delta. With an average price for the route of $489 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $506 and an overall rating of 7.8.

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

    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 Juan to San Diego.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from San Juan 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 Juan to San Diego?

    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 Diego with an airline and back to San Juan with another airline. Booking your flights between San Juan and SAN 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 Juan to San Diego?

    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 Diego from San Juan 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 Juan to San Diego

 
See real verified KAYAK customer reviews for airlines flying from San Juan to San Diego. 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 Juan to San Diego? 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 4249 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Our first flight was so delayed that we had 10 mins to board the next one. We requested if the flight attendant could allow us off there plane first and they denied our request even though I have seen this done before. Luck was on our side that we didn’t miss our next flight.

Everything was great except for the in-flight wifi that wasn't working.

It was great! The new boeing has much more space and charging ports!

Took a little longer than normal, but the process is clear and easy to understand.

Baggage check in would have been better if the service clerk told the other clerk that she was merging her two long lines of customers with her line so she could move luggage. Instead she only told the customers. When I told the agent and ask if she could direct who is next in line so we weren’t trying to cut in front of each other she said it’s not her problem and she can’t work three lines. I was shocked. Understood that they were working more than their share but some organization so the customers aren’t getting upset at each other would have gone a long way

Crew was real good, flight was smooth and came in early.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

Rough day of travel all the way around. Wrong info given to us multiple times and mistakes in their booking making our trip 10 hours longer than planned. I’m bummed because I fly Delta all the time and love them. Mistakes happen. Just bummed that this was a rare trip our whole family was traveling together.

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Was a great smooth flight from Detroit to San Diego.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

They made us check our bag…. Even though there was plenty of space up top… and then proceeded to shatter by brand new luggage 😞

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Awful. There was a minor problem with a fridge and they had us 2 hours in the runway before take off. The paper work alone took them half hour. There was no attemp to make up time up while in teansit and when we arrived, they had us another half hour in the plane because of traffic. I, and a bunch of people, lost their onnection flights for 5 to 10 minutes. Not even the attemp to wait given thar all delays, but the taxing, were United's fault. Then another 45 mins to get an agent and no flight alternatives for 2 days. Im am very disapointed with this "premium carrier".

Was a pain having to leave the plane and reboard but glad the plane was fixed

IT WAS A LONG TIME SINCE THE LAST TIME I TRAVELED. I THOUGHT I WAS TO BE LOST BUT EVERYONE WAS PRETTY NICE WITH ME AND MADE MY EXPERIENCE NICE. THANKS

Connecting flights were poor,especially in Naples.our Lufthansa air bus was a joke.way too small for that long of a flight.no room at all.couldn’t even get out of the seats to move around or go to the bathrooms.we thought we were getting an actual air bus,double decker.i will never fly that long in a plane like that again.kind of misleading to call it an air bus.we actually had more room on our buses that we used.

For a 22 minute flight all you expect is for it to be safe and comfortable

There was a delay that was unexpected. The seats were uncomfortable for the length of the flight.

Lost connnection had to stayON in Chicago Was a mess

Booked economy through United - air canada treated it as standby and was almost refused boarding.

The seat when "flat" was not flat and pad was too thin to cover it.

Delayed for mechanical and no updates on what was happening and how long the delay might be.

We are too tired and frustrated to comment politely at this point

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

The service and food needs to improve to catch up with other international flights

The flight crew was fantastic! Which the seats had a small TV.

also wi-fi never worked attendant said satellite coverage is spotty over water ..... but we were over land!

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

This time my flight was smooth and uneventful. They started boarding even earlier than it was scheduled. I was pleasantly surprised. Thank you!

Boarding was a mess - the agent basically called every group in rapid succession, so there was no organization at all. The economy seats are a joke, and main cabin extra seats were sold out when I purchased my flight. As such, I was locked in the same position for four hours. Being 6’6”, it was impossible to get my bag out from under the seat in front of me, and I couldn’t have used my laptop even if my bag were accessible due to the minuscule seat pitch. Also the wifi was broken. American is a joke - can’t wait until they merge with Spirit.

I will NEVER fly with this clown show airline again. Idiots. All of them. Unprepared. Unfriendly. Miserable employees. NEVER. EVER. AGAIN

Great price, easy check in, love the free drinks and snacks, and nice crew. The only negative part was waiting for your seat assignment 5 minutes before boarding, and the seats are a bit uncomfortable.

Easy experience even with the outbound flight being delayed. The seating and space was comfortable and the crew seemed very nice and helpful.

Flight was smooth, amenities (entertainment options and power outlets) were good, sears decent)

Disaster This is why I stick to delta You get what you pay for

Well, its a hit or miss when boarding most of the time your employees just let everyone enter immediately In one bum rush. Then out of know where tell the passengers only let A can enter then b then c etc. So make a decision and stick to it. Do it by alphabet and have famn strick compliance. Let the public know. That makes easier on passengers.

It was a pretty smooth flight, I tend to get mini anxiety attacks during flights, however, this time was pretty smooth and I was able to relax. The only thing, I was having issues to connect to the Flyfi internet. I was not able to connect at all, I turned off my phone a couple times and didnt work.

It took an hour to get my bag after landing. Not exaggerating

Everything was good instead change the gates! I missed my first flight because it was changed the gate and I didn’t know!

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

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

Information on your arrival and departure airports