Cheap flights from San Antonio International to San Juan

Compare San Antonio 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 Antonio International to San Juan

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to San Juan? If you want to travel next month, return fares start from $514. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Antonio 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 Antonio International to San Juan flights are currently cheapest in July.

San Antonio to San Juan: Flight information

The things to know before you go.
Cheapest flight found$152
Cheapest month to flyJuly

Finding cheap flights from San Antonio 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 Antonio International to San Juan is $326. 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 Antonio International to San Juan. But we found flights with one or more stops from $326.
As of May 2026, there are no flights flying from San Antonio International to San Juan.
The cheapest month to fly from San Antonio International to San Juan is usually July.
If you're flying from San Antonio 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 $326.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to San Juan on Saturday, 18 July 2026.
No airlines currently offer direct flights between San Antonio 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 Antonio International Airport (SAT) to San Juan: what you need to know

  • Expect to be travelling for 5 hours 15 minutes. On average, that's the duration of a direct flight from San Antonio International Airport to San Juan.

  • San Antonio International Airport is located in San Antonio. Based in the UTC-4 timezone, San Juan is one hour ahead of San Antonio.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and one hour before domestic departures. That way, you won't have to rush to board your SAT to San Juan flight.

  • Heading away during a peak time like public or school holidays? Expect longer queues at check-in and security. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • Start your journey at SAT and fly straight to Luis Munoz Marin International Airport (SJU). That will be your arrival point when searching for San Antonio International Airport to San Juan tickets.

  • Book your seat with Spirit Airlines. This popular carrier operates direct flights from San Antonio International Airport to San Juan.

  • Think about adding a stopover to potentially save on your plane ticket from SAT to San Juan. Just uncheck 'Direct flights only' during your search. Take a break (and maybe save some cash) by stopping at one of these airports:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Cancun International Airport (CUN)

    • William P. Hobby Airport (HOU)

  • Located around 13 kilometres from the centre of San Antonio, SAT can be reached in about 20 minutes by car. Travelling on public transport takes roughly 1 hour 30 minutes.

  • Want an easy start to your travels? Stay near SAT. Whether you're taking an early flight from San Antonio International Airport to San Juan or just don't want to be rushed, these hotels are just the thing:

  • San Antonio International Airport has an excellent on-time record, making delays less likely. Departures from SAT land on schedule 83.17% of the time.

  • You'll find SAT at 9800 Airport Boulevard.

How to find the cheapest flights from San Antonio International Airport (SAT) to San Juan

  • $152 is currently the lowest price for a one-way San Antonio International Airport to San Juan flight. Return plane tickets start from $326. These prices can change based on demand and availability.

  • Book one month before you travel. Pricing trends suggest that this is the ideal window for finding cheap flights from SAT to San Juan.

  • May is the best month for scoring a fantastic deal on San Antonio International Airport to San Juan tickets. If you'd like to travel at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • Never miss a deal on cheap flights from SAT to San Juan by setting up a Price Alert. You'll receive an email or push notification on the app when a new low fare is offered.

  • Tailor your trip with filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from San Antonio International Airport to San Juan.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • Luis Munoz Marin International Airport (SJU) to the centre of San Juan takes around 10 minutes by car. The centre is roughly 8 kilometres away.

  • If you're using public transport, expect a journey time of about 55 minutes.

  • Consider staying in a hotel close to SJU if you're coming in on a late flight from San Antonio International Airport to San Juan. Check in to one of these accommodation options and avoid the hassle of a long transfer:

  • Go where the road takes you with a Luis Munoz Marin International Airport rental car. Pick up a set of wheels from Sixt, Ace Rent a Car or U-Save and find adventure across San Juan and beyond.

  • Reserving your ride from Luis Munoz Marin International Airport about two weeks in advance of your flight from SAT to San Juan can help you get the best possible rate.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Central San Juan is around 8 kilometres from Fernando Luis Ribas Dominicci Airport (SIG). After your flight from San Antonio International Airport to San Juan has hit the runway and you've made your way through the terminal, the drive should be around 15 minutes.

  • The trip will take about 1 hour on public transport.

  • There are some comfortable places to park your luggage (and yourself) near SIG. Kick back and get cosy after your SAT to San Juan flight at any of these perfectly located options:

Best time to go to San Juan

  • Carefully consider your dates before securing your flight from San Antonio International Airport to San Juan. The city comes alive in peak season, but hotel prices are typically higher and major attractions can get crowded. Go to San Juan in the low season for a more relaxed vibe.

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

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

More about San Juan

  • Once you've booked your flight from San Antonio International Airport to San Juan, find a hotel that offers both comfort and a great location. Make one of these options your base for exploring San Juan:

  • La Garita del morro de san juan bahia and Castillo San Felipe del Morro are just a couple of the top attractions to put on your San Juan must-do list. Keep the momentum going by heading to Fortaleza Street.

Explore more of Puerto Rico

  • San Juan has plenty to offer, but there are so many other parts of Puerto Rico waiting to be explored. About 113 kilometres west of San Juan, a visit to Aguadilla will keep you busy. Start with leading sights like El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • If you're interested in discovering another side of Puerto Rico, consider Isabela, about 105 kilometres west of San Juan. Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania are key highlights.

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