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323 € Cheap Flights from San Diego International to San Juan

Compare San Diego International to San Juan flight deals

Find the cheapest month or even day of the year to fly to San Juan

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Flight deals from San Diego International to San Juan

Looking for a cheap last-minute deal or the best return flight from San Diego International Airport to San Juan? If you want to travel next month, return fares start from 362 €. Find the lowest prices on one-way and return tickets right here.
San Juan.323 € per passenger.Departing Fri, 21 Aug, returning Fri, 28 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 21 Aug, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Fri, 28 Aug, arriving in San Diego International.Price includes taxes and charges.From 323 €, select.
San Juan.328 € per passenger.Departing Mon, 19 Oct, returning Mon, 26 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Mon, 19 Oct, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Mon, 26 Oct, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.328 € per passenger.Departing Thu, 27 Aug, returning Tue, 1 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Thu, 27 Aug, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Tue, 1 Sep, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.328 € per passenger.Departing Mon, 7 Dec, returning Fri, 11 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Mon, 7 Dec, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Fri, 11 Dec, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.328 € per passenger.Departing Mon, 2 Nov, returning Wed, 11 Nov.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Mon, 2 Nov, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departs from San Juan Luis Munoz Marin on Wed, 11 Nov, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.328 € per passenger.Departing Tue, 1 Sep, returning Sat, 12 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Tue, 1 Sep, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Sat, 12 Sep, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.328 € per passenger.Departing Thu, 30 Jul, returning Sun, 20 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Diego International on Thu, 30 Jul, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Southwest Airlines, departs from San Juan Luis Munoz Marin on Sun, 20 Sep, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.328 € per passenger.Departing Mon, 18 Jan, returning Wed, 27 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Mon, 18 Jan, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Wed, 27 Jan, arriving in San Diego International.Price includes taxes and charges.From 328 €, select.
San Juan.329 € per passenger.Departing Wed, 27 Jan, returning Tue, 2 Feb.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Wed, 27 Jan, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departs from San Juan Luis Munoz Marin on Tue, 2 Feb, arriving in San Diego International.Price includes taxes and charges.From 329 €, select.
San Juan.330 € per passenger.Departing Sat, 31 Oct, returning Tue, 3 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Sat, 31 Oct, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Tue, 3 Nov, arriving in San Diego International.Price includes taxes and charges.From 330 €, select.
San Juan.342 € per passenger.Departing Fri, 29 May, returning Tue, 2 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 29 May, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Tue, 2 Jun, arriving in San Diego International.Price includes taxes and charges.From 342 €, select.
San Juan.354 € per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 29 Jul, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Wed, 5 Aug, arriving in San Diego International.Price includes taxes and charges.From 354 €, select.
San Juan.361 € per passenger.Departing Wed, 22 Jul, returning Wed, 29 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 22 Jul, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Wed, 29 Jul, arriving in San Diego International.Price includes taxes and charges.From 361 €, select.
San Juan.362 € per passenger.Departing Wed, 10 Jun, returning Wed, 17 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 10 Jun, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Wed, 17 Jun, arriving in San Diego International.Price includes taxes and charges.From 362 €, select.
San Juan.362 € per passenger.Departing Sun, 27 Sep, returning Mon, 5 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Diego International on Sun, 27 Sep, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Southwest Airlines, departs from San Juan Luis Munoz Marin on Mon, 5 Oct, arriving in San Diego International.Price includes taxes and charges.From 362 €, select.
San Juan.367 € per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Wed, 25 Nov, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Wed, 2 Dec, arriving in San Diego International.Price includes taxes and charges.From 367 €, select.

Find the cheapest month to fly from San Diego International to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego International to San Juan flights are currently cheapest in August.
May
from 412 €
Jun
from 362 €
Jul
from 361 €
Aug
from 323 €
Sep
from 328 €
Oct
from 328 €
Nov
from 328 €
Dec
from 328 €
Jan
from 328 €
Feb
from 405 €
Mar
from 542 €
Apr
Find prices

Alternative San Diego International to San Juan routes

Looking for the cheapest, fastest or easiest route from San Diego International to San Juan? You could fly into the following airports instead.

San Juan Isla Grande

1km from central San Juan
Closest
Search flights

San Juan Luis Munoz Marin

11km from central San Juan
Cheapest
from 323 €
Search flights

Roosevelt Roads

55km from central San Juan
Search flights

Ponce

70km from central San Juan
from 662 €
Search flights

Vieques

82km from central San Juan
Search flights

Culebra

85km from central San Juan
Search flights

San Diego to San Juan: Flight information

The things to know before you go.
Cheapest flight found323 €
Cheapest month to flyAugust

Finding cheap flights from San Diego International to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from San Diego International to San Juan is 323 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Diego International to San Juan. But we found flights with one or more stops from 323 €.
As of May 2026, there are no flights flying from San Diego International to San Juan.
The cheapest month to fly from San Diego International to San Juan is usually August.
If you're flying from San Diego International Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from 323 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Diego International Airport to San Juan on Friday, 21 August 2026.
No airlines currently offer direct flights between San Diego International Airport and San Juan. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 27°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
Currently, Frontier Airlines offers the cheapest flight tickets to San Juan.

Flying from San Diego International Airport (SAN) to San Juan: what you need to know

  • The timezone in San Juan is UTC-4. The city is three hours ahead of San Diego, where San Diego International Airport is located.

  • To avoid missing your SAN to San Juan flight, allow plenty of time to check in and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • Taking off during a peak period like a bank holiday? Expect longer lines at security and check-in. To give yourself peace of mind, arrive up to four hours before international flights and two hours before domestic departures.

  • We make it a breeze to book plane tickets from SAN to San Juan with a stopover. To see all your options, deselect 'Direct flights only.' Next, choose a flight with a stop long enough to tour your chosen city. Well-traveled stopover hubs include:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Dallas/Fort Worth International Airport (DFW)

    • George Bush Intercontinental Airport (IAH)

  • SAN is about 3 kilometres from central San Diego. If you're ride-sharing, catching a cab or driving from the centre, it'll take 10 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the trip time to be around 20 minutes.

  • Looking for a hotel close to SAN? If you've booked an early flight from San Diego International Airport to San Juan, these stays will put you moments from your departure gate:

  • 71.38% of flights that leave from San Diego International Airport land at their destination on schedule.

  • You'll find SAN at N Harbour Dr.

How to find the cheapest flights from San Diego International Airport (SAN) to San Juan

  • 159 € is currently the lowest price for a one-way San Diego International Airport to San Juan flight. Return plane tickets start from 323 €. These fares can change based on availability and demand.

  • To pick up cheap flights from SAN to San Juan, book early. Airlines tend to offer lower prices when flights are first released.

  • The 'Whole month' tool will show you the cheapest tickets from San Diego International Airport to San Juan across the month. It's an easy way to snap up a bargain if your dates are flexible.

  • Picking up a cheap flight from SAN to San Juan couldn't be easier with Price Alerts. All you need to do is set up one of these automatic notifications and we'll get in touch when a new discount appears.

  • Find an affordable flight from San Diego International Airport to San Juan with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • The distance from Luis Munoz Marin International Airport (SJU) to central San Juan is roughly 8 kilometres. It'll take you around 10 minutes to reach the centre driving.

  • It'll take around 55 minutes to get there using public transport.

  • The last thing you need is a lengthy journey to your hotel if you're landing late on a flight from San Diego International Airport to San Juan. Book one of these accommodation options near SJU instead:

  • Say yes to new adventures by picking up a Luis Munoz Marin International Airport rental car. Grab a set of wheels from Sixt, Ace Rent a Car or U-Save and explore beyond San Juan's usual tourist stops.

  • Lock in the best deal by booking your vehicle from Luis Munoz Marin International Airport about two weeks in advance of your flight from SAN to San Juan.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Fernando Luis Ribas Dominicci Airport (SIG) is about 8 kilometres from central San Juan. After your flight from San Diego International Airport to San Juan, it'll take you around 15 minutes to reach the heart of the city in a cab or ride-share.

  • You can expect the trip to take roughly 1 hour on public transport.

  • Following your SAN to San Juan flight, kick back at a hotel close to SIG. These are some great options that'll help you switch to relaxation mode:

Best time to go to San Juan

  • Visit San Juan in peak season if you like a busy atmosphere, but remember that hotel prices are usually higher. Alternatively, book your flights from San Diego International Airport to San Juan during low season when prices are cheaper and crowds are smaller.

  • Lock in a San Diego International Airport to San Juan plane ticket with a departure in September if you want to visit the city during its warmest month. You can expect temperatures to range from 23ºC (73ºF) to 33ºC (91ºF).

  • Look for cheap tickets from SAN to San Juan in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 20ºC (68ºF) and 28ºC (82ºF) on average.

More about San Juan

  • When it comes to searching for somewhere to lay your head, you'll find the best stays in San Juan right here. Explore these hotels as soon as you've locked in your flight from San Diego International Airport to San Juan:

  • La Garita del morro de san juan bahia and Castillo San Felipe del Morro are just the start of the top attractions to put on your San Juan itinerary. Continue your sightseeing adventures at Fortaleza Street.

Explore more of Puerto Rico

  • Aguadilla is just one of the many cities in Puerto Rico waiting to be discovered once you've seen the sights of San Juan. Around 113 kilometres away to the west, its top attractions include El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • Around 105 kilometres west of San Juan, Isabela is another favourite stop in Puerto Rico. Get a taste of what this destination has to offer at Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania.

Plan the rest of your trip from San Diego to San Juan

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.