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Cheap Flights from San Francisco International to San Juan

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      Travellers and cabin class, 1 Adult, Economy

      Compare San Francisco International to San Juan flight deals

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

      Book the best San Juan fare with no extra fees

      Flight deals from San Francisco International to San Juan

      Looking for a cheap last-minute deal or the best return flight from San Francisco International Airport to San Juan? If you want to travel next month, return fares start from Rs97,820. Find the lowest prices on one-way and return tickets right here.
      San Juan.Rs46,479 per passenger.Departing Sat, 31 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Francisco International on Sat, 31 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs46,479, select.
      San Juan.Rs47,293 per passenger.Departing Mon, 9 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Francisco International on Mon, 9 Nov, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs47,293, select.
      San Juan.Rs49,317 per passenger.Departing Mon, 28 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Francisco International on Mon, 28 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs49,317, select.
      San Juan.Rs60,101 per passenger.Departing Sun, 13 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Francisco International on Sun, 13 Dec, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs60,101, select.
      San Juan.Rs73,195 per passenger.Departing Thu, 28 Jan.One-way flight with United.Outbound indirect flight with United, departs from San Francisco International on Thu, 28 Jan, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs73,195, select.
      San Juan.Rs73,195 per passenger.Departing Wed, 5 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Wed, 5 May, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs73,195, select.
      San Juan.Rs73,195 per passenger.Departing Tue, 2 Feb.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from San Francisco International on Tue, 2 Feb, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs73,195, select.
      San Juan.Rs73,394 per passenger.Departing Tue, 20 Apr.One-way flight with United.Outbound indirect flight with United, departs from San Francisco International on Tue, 20 Apr, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs73,394, select.
      San Juan.Rs76,284 per passenger.Departing Mon, 1 Mar.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Mon, 1 Mar, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs76,284, select.
      San Juan.Rs143,478 per passenger.Departing Thu, 1 Jul.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from San Francisco International on Thu, 1 Jul, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs143,478, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from San Francisco International to San Juan found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from San Francisco 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 Francisco International to San Juan flights are currently cheapest in October.
      Sep
      from Rs49,364
      Oct
      from Rs46,523
      Nov
      from Rs47,338
      Dec
      from Rs60,158
      Jan
      from Rs73,265
      Feb
      from Rs73,265
      Mar
      from Rs76,356
      Apr
      from Rs73,464
      May
      from Rs73,265
      Jun
      Find prices
      Jul
      from Rs143,615
      Aug
      Find prices

      Alternative San Francisco International to San Juan routes

      Looking for the cheapest, fastest or easiest route from San Francisco 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 Rs46,479
      Search flights

      Roosevelt Roads

      55km from central San Juan
      Search flights

      Ponce

      70km from central San Juan
      from Rs112,053
      Search flights

      Vieques

      82km from central San Juan
      Search flights

      Culebra

      85km from central San Juan
      from Rs82,988
      Search flights

      San Francisco to San Juan: Flight information

      The things to know before you go.
      Cheapest flight foundRs46,479
      Cheapest month to flyOctober

      Finding cheap flights from San Francisco 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 Francisco International to San Juan is Rs85,215. 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 Francisco International to San Juan. But we found flights with one or more stops from Rs85,215.
      As of September 2026, there are no flights flying from San Francisco International to San Juan.
      The cheapest month to fly from San Francisco International to San Juan is usually October.
      If you're flying from San Francisco 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 Rs85,215.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to San Juan on Saturday, 31 October 2026.
      No airlines currently offer direct flights between San Francisco 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 September, the average temperature is usually around 28°C. August is typically the warmest month in San Juan, when it usually averages around 30°C. You can expect the least rain in January. The coldest month is February, with temperatures averaging 22°C. The rainiest month is September.
      Currently, Frontier Airlines offers the cheapest flight tickets to San Juan.

      Flying from San Francisco International Airport (SFO) to San Juan: what you need to know

      • San Francisco International Airport is located in San Francisco. Based in the UTC-4 timezone, San Juan is four hours ahead of San Francisco.

      • Leave enough time to get on your SFO to San Juan flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

      • During popular months such as July, you'll want to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead of an international flight when you travel during a peak period in general.

      • Consider adding a stopover to potentially save on your plane ticket from SFO to San Juan. Simply uncheck 'Direct flights only' during your search. Break up your journey by stopping at one of these airports:

        • Denver International Airport (DEN)

        • Miami International Airport (MIA)

        • Fort Lauderdale-Hollywood International Airport (FLL)

      • Travelling from central San Francisco to SFO takes about 35 minutes by public transport. If you ride-share, drive or take a taxi, you'll cover the 18 kilometres in 25 minutes or so, depending on traffic.

      • Looking for a hotel near SFO? If you're catching an early flight from San Francisco International Airport to San Juan, these stays will put you moments from check-in:

      • Of the flights that depart from San Francisco International Airport, 78% touch down on time at their destination.

      How to find the cheapest flights from San Francisco International Airport (SFO) to San Juan

      • Rs46,479 is the cheapest price we've seen for a one-way San Francisco International Airport to San Juan flight. A round-trip ticket right now is Rs85,215. Depending on how early you book and the availability, these fares can change.

      • To find cheap flights from SFO to San Juan, book early. Airlines usually offer lower prices when tickets are first released.

      • If you can be flexible with your travel dates, try using the 'Whole month' tool. It'll show you the cheapest price across every month when looking for a San Francisco International Airport to San Juan ticket.

      • Finding a cheap flight from SFO to San Juan is a breeze with Price Alerts. Simply set up one of these automatic notifications and we'll let you know when there's a better deal.

      • Find a cheap flight from San Francisco 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)

      • Luis Munoz Marin International Airport (SJU) is around 11 kilometres from the centre of San Juan. If you're opting for a ride-share or a taxi, the drive takes roughly 20 minutes.

      • If you're taking public transport, expect a journey time of around 1 hour.

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

      • Secure the lowest price by reserving your vehicle from Luis Munoz Marin International Airport around two weeks in advance of your flight from SFO to San Juan.

      Best time to go to San Juan

      • March is the busiest month for flights from San Francisco International Airport to San Juan. To avoid the crowds, head to San Juan in December.

      • The warmest month in San Juan is August, with temperatures ranging between 24ºC and 32ºC. Lock in your San Francisco International Airport to San Juan plane ticket then if that's your idea of comfortable weather.

      • For cooler conditions, look for a cheap ticket from SFO to San Juan in February when temperatures average between 21ºC and 28ºC.

      More about San Juan

      • Once you've booked your flight from San Francisco International Airport to San Juan, choose a hotel that puts you right where the action is. Make one of these accommodation options your base for exploring San Juan:

      • Every great holiday has to include some sightseeing. Esperanza Beach, Balneario El Escambron and Escambron Green are must-visits when exploring San Juan.

      Explore more of Puerto Rico

      • Aguadilla is just one of the many places in Puerto Rico waiting to be discovered once you've seen San Juan. Around 113 kilometres away to the west, top sights here include Silla Aguadilla, Bridges Surf Beach and Playa Rompe Olas.

      • If you're interested in discovering another great destination in Puerto Rico, consider Isabela, roughly 105 kilometres west of San Juan. Playa montones, Shore Island Beach and Guajataca Forest Reserve are among its highlights.

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

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.