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Cheap Flights from London Heathrow to San Juan Luis Munoz Marin

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Compare London Heathrow 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 Heathrow to San Juan Luis Munoz Marin

Looking for a cheap last-minute deal or the best return flight from London Heathrow to San Juan Luis Munoz Marin? Find the lowest prices on one-way and return tickets right here.
San Juan.620 € per passenger.Departing Sat, 8 Nov, returning Sat, 15 Nov.Return flight with Scandinavian Airlines and jetBlue.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Sat, 8 Nov, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Sat, 15 Nov, arriving in London Heathrow.Price includes taxes and charges.From 620 €, select.
San Juan.627 € per passenger.Departing Thu, 12 Jun, returning Wed, 25 Jun.Return flight with SWISS and jetBlue.Outbound indirect flight with SWISS, departs from London Heathrow on Thu, 12 Jun, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Wed, 25 Jun, arriving in London Heathrow.Price includes taxes and charges.From 627 €, select.
San Juan.658 € per passenger.Departing Sat, 20 Sep, returning Tue, 30 Sep.Return flight with TAP Air Portugal and jetBlue.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Sat, 20 Sep, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Tue, 30 Sep, arriving in London Heathrow.Price includes taxes and charges.From 658 €, select.
San Juan.679 € per passenger.Departing Tue, 1 Jul, returning Tue, 15 Jul.Return flight with SWISS and Frontier Airlines.Outbound indirect flight with SWISS, departs from London Heathrow on Tue, 1 Jul, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Tue, 15 Jul, arriving in London Heathrow.Price includes taxes and charges.From 679 €, select.
San Juan.692 € per passenger.Departing Fri, 3 Oct, returning Fri, 10 Oct.Return flight with Finnair and Frontier Airlines.Outbound indirect flight with Finnair, departs from London Heathrow on Fri, 3 Oct, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Fri, 10 Oct, arriving in London Heathrow.Price includes taxes and charges.From 692 €, select.
San Juan.700 € per passenger.Departing Thu, 30 Oct, returning Thu, 6 Nov.Return flight with Virgin Atlantic and jetBlue.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Thu, 30 Oct, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with jetBlue, departs from San Juan Luis Munoz Marin on Thu, 6 Nov, arriving in London Heathrow.Price includes taxes and charges.From 700 €, select.
San Juan.721 € per passenger.Departing Thu, 26 Feb, returning Mon, 9 Mar.Return flight with Vueling Airlines and Iberia.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Thu, 26 Feb, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Iberia, departs from San Juan Luis Munoz Marin on Mon, 9 Mar, arriving in London Heathrow.Price includes taxes and charges.From 721 €, select.
San Juan.730 € per passenger.Departing Sun, 25 Jan, returning Wed, 11 Feb.Return flight with Vueling Airlines and Iberia.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Sun, 25 Jan, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Iberia, departs from San Juan Luis Munoz Marin on Wed, 11 Feb, arriving in London Heathrow.Price includes taxes and charges.From 730 €, select.

Find the cheapest month to fly from London Heathrow 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 Heathrow to San Juan Luis Munoz Marin flights are currently cheapest in November.
Jun
from 627 €
Jul
from 679 €
Aug
from 974 €
Sep
from 658 €
Oct
from 692 €
Nov
from 620 €
Dec
from 772 €
Jan
from 743 €
Feb
from 743 €
Mar
from 830 €
Apr
from 893 €
May
from 990 €

London Heathrow to San Juan Luis Munoz Marin: Alternative routes

Compare routes from London Heathrow to San Juan below. You may find an airport to fly into that's cheaper, faster, or easier than San Juan Luis Munoz Marin.

London to San Juan: Flight information

The things to know before you go.
Cheapest flight found620 €
Cheapest month to flyNovember

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

The best price we found for a return flight from London Heathrow to San Juan Luis Munoz Marin is 620 €. 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 Heathrow to San Juan Luis Munoz Marin. But we found flights with one or more stops from 620 €.
As of June 2025, there are no flights flying from London Heathrow to San Juan Luis Munoz Marin.
The cheapest month to fly from London Heathrow to San Juan Luis Munoz Marin is usually June 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to San Juan Luis Munoz Marin Airport on Saturday, 8 November 2025.
No airlines currently offer direct flights between London Heathrow 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, Scandinavian Airlines offers the cheapest flight tickets to San Juan Luis Munoz Marin.

Flying from London Heathrow Airport (LHR) to Luis Munoz Marin International Airport (SJU): what you need to know

  • San Juan is four hours behind London and follows the UTC-4 timezone.

  • Arrive at the airport on time so you don't miss your LHR 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.

  • Flying during a peak time like July? Public holidays and other popular periods can result in longer queues at security. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

  • If you want to break up your flight, just deselect 'Direct flights only' when searching for your ticket from London Heathrow Airport to Luis Munoz Marin International Airport. These are the top stopovers between LHR and SJU:

    • Grantley Adams International Airport

    • Logan International Airport

    • John F. Kennedy International Airport

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

  • The cheapest price we've seen for a one-way London Heathrow Airport to Luis Munoz Marin International Airport flight is 329 €. A return fare right now is 620 €. Depending on the availability when you book, these fares could change.

  • Don't wait until the last minute. You're more likely to find cheap tickets from LHR to SJU if you book early. Airlines often have some great early bird discounts.

  • If you can be flexible with your trip dates, try using the 'Whole month' tool. It'll show you the lowest price in every month when searching for a flight from London Heathrow Airport to Luis Munoz Marin International Airport.

  • Never miss a deal on cheap flights from LHR to SJU by creating a Price Alert. We'll send you an email or notification on the app when a special offer becomes available.

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

Handy information about London Heathrow Airport (LHR)

  • 68.18% of flights that leave from London Heathrow Airport make it to their destination on time.

  • To reach London Heathrow Airport from central London, it takes about 55 minutes by car. Of course, this depends on traffic conditions. It's approximately 31 kilometres from the airport to the city centre.

  • The journey when using public transport takes roughly 1 hour.

  • Get your trip off to a leisurely start by staying near LHR. Whether you're catching an early flight from London Heathrow Airport to Luis Munoz Marin International Airport or just don't like being rushed, these hotels are ideal:

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 to central San Juan has a drive time of about 10 minutes. It's approximately 8 kilometres away.

  • It typically takes 55 minutes when travelling by public transport.

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

  • The quietest month for a flight from London Heathrow Airport to Luis Munoz Marin International Airport is May, while July is the busiest. Choose the ideal time to visit San Juan based on whether you prefer a more relaxed vibe or a faster pace.

  • Before locking in your flight from London Heathrow Airport to Luis Munoz Marin International Airport, think about the kind of weather you like. September is the warmest month in San Juan, with the temperature ranging from 23ºC (73ºF) to 33ºC (91ºF).

  • February has average temperatures of between 20ºC (68ºF) and 28ºC (82ºF). Look for cheap tickets from LHR to SJU sometime then if you'd rather travel in cooler conditions.

Explore more of Puerto Rico

  • Bayamon is just one of the many places in Puerto Rico waiting to be discovered after you've seen San Juan. Around 10 kilometres away to the west, popular attractions include Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña, Monumento a los Trovadores and Parque Palm Court.

  • Carolina is another sought-after destination in Puerto Rico and is around 11 kilometres east of San Juan. No journey is complete without a visit to Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track.

More travel options

Plan the rest of your trip from London to San Juan

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