Cheap flights from London Gatwick to San Juan Luis Munoz Marin

Compare London Gatwick to San Juan Luis Munoz Marin flight deals

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

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Flight deals from London Gatwick Airport to San Juan Luis Munoz Marin Airport

Looking for a cheap last-minute deal or the best round-trip flight from London Gatwick Airport to San Juan Luis Munoz Marin Airport? If you want to travel next month, round-trip fares start from $718. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from London Gatwick to San Juan Luis Munoz Marin

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Gatwick to San Juan Luis Munoz Marin flights are currently cheapest in May.

London to San Juan: Flight information

The things to know before you go.
Cheapest flight found$710
Cheapest month to flyMay

Finding cheap flights from London Gatwick to San Juan Luis Munoz Marin: Frequently asked questions

The best price we found for a round-trip flight from London Gatwick to San Juan Luis Munoz Marin is $710. 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 London Gatwick to San Juan Luis Munoz Marin. But we found flights with one or more stops from $710.
There are no flights flying from London Gatwick to San Juan Luis Munoz Marin, as of March 2026.
The cheapest month to fly from London Gatwick to San Juan Luis Munoz Marin is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Gatwick Airport to San Juan Luis Munoz Marin Airport on Friday, May 1, 2026.
No airlines currently offer direct flights between London Gatwick Airport and San Juan Luis Munoz Marin Airport. 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 Luis Munoz Marin 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.
Currently, Norse Atlantic Airways (UK) offers the cheapest flight tickets to San Juan Luis Munoz Marin.

Traveling from London Gatwick Airport (LGW) to Luis Munoz Marin International Airport (SJU): what you need to know

  • San Juan's timezone is UTC-4, making San Juan four hours behind London.

  • Arrive at the airport on time so you don't miss your LGW to SJU flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

  • Traveling during a peak month such as August? Public holidays and other high seasons can result in longer lines at airport checkpoints. Play it safe and arrive up to four hours before international flights and two hours before domestic departures.

  • If you want to add a stop to your trip, simply uncheck 'Direct flights only' when searching for your ticket from London Gatwick Airport to Luis Munoz Marin International Airport. Here are the top stopovers between LGW and SJU:

    • Punta Cana International Airport

    • Piarco International Airport

    • Adolfo Suarez Madrid-Barajas Airport

How to find the cheapest flights from London Gatwick Airport (LGW) to Luis Munoz Marin International Airport (SJU)

  • $368 is currently the lowest price for a one-way London Gatwick Airport to Luis Munoz Marin International Airport flight. A return flight starts at $710. These fares may change depending on availability and demand.

  • To get your hands on cheap tickets from LGW to SJU, book as early as you can. Airlines generally offer their best fares when flights are first made available.

  • If you can be flexible with your travel dates, try using the 'Whole month' search function. It'll find the cheapest price in every month when searching for a flight from London Gatwick Airport to Luis Munoz Marin International Airport.

  • There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll let you know the moment there's a new deal on cheap flights from LGW to SJU.

  • Choose your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from London Gatwick Airport to Luis Munoz Marin International Airport.

Handy information about London Gatwick Airport (LGW)

  • Of the flights that depart from London Gatwick Airport, 69.26% arrive as scheduled at their destination.

  • London Gatwick Airport is about 80 kilometers from central London. If you're catching a cab, ride-sharing or driving from the center, it'll take you 1 hour 20 minutes or so to get there, depending on the traffic.

  • Planning to catch public transport? You can expect a journey time of around 1 hour 25 minutes.

  • Booked an early flight from London Gatwick Airport to Luis Munoz Marin International Airport? Avoid rushing to the airport (and get some extra shut-eye) by picking one of these hotels near LGW:

Arriving at Luis Munoz Marin International Airport (SJU)

Getting from Luis Munoz Marin International Airport (SJU) to central San Juan

  • Luis Munoz Marin International Airport is roughly 8 kilometers from central San Juan. Driving there takes about 10 minutes.

  • Traveling to the center by public transport takes about 55 minutes.

When to fly to Luis Munoz Marin International Airport (SJU)

  • The quietest month for a flight from London Gatwick Airport to Luis Munoz Marin International Airport is May, while July is the most popular. Pick the best time to go to San Juan based on whether you prefer a more fast-paced or easygoing experience.

  • The warmest month in San Juan is September, with the temperature ranging between 23ºC (73ºF) and 33ºC (91ºF). Book your flights from London Gatwick Airport to Luis Munoz Marin International Airport in this month if this is the type of weather you like.

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

Explore more of Puerto Rico

  • San Juan has loads to offer, but there are so many other corners of Puerto Rico you should also see. About 10 kilometers west of San Juan, a visit to Bayamon will keep your itinerary busy. Start with leading sights like Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña, Monumento a los Trovadores and Parque Palm Court.

  • If you're interested in discovering another well-known destination in Puerto Rico, head for Carolina, roughly 11 kilometers east of San Juan. Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track are the start of reasons to visit.

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