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Cheap Flights from San Juan to London

Compare San Juan to London flight deals

Find the cheapest month or even day of the year to fly to London

Book the best London fare with no extra fees

Flight deals from San Juan to London

Looking for a cheap last-minute deal or the best return flight from San Juan to London? Find the lowest prices on one-way and return tickets right here.
London.Rs48,131 per passenger.Departing Wed, 21 Jan.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Wed, 21 Jan, arriving in London Gatwick.Price includes taxes and charges.From Rs48,131, select.
London.Rs71,965 per passenger.Departing Sat, 6 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 6 Dec, arriving in London Heathrow.Price includes taxes and charges.From Rs71,965, select.
London.Rs75,157 per passenger.Departing Mon, 24 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Mon, 24 Nov, arriving in London Gatwick.Price includes taxes and charges.From Rs75,157, select.
London.Rs76,618 per passenger.Departing Mon, 2 Feb.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from San Juan Luis Munoz Marin on Mon, 2 Feb, arriving in London Gatwick.Price includes taxes and charges.From Rs76,618, select.
London.Rs81,748 per passenger.Departing Sun, 1 Mar.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sun, 1 Mar, arriving in London Stansted.Price includes taxes and charges.From Rs81,748, select.
London.Rs86,820 per passenger.Departing Mon, 27 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Mon, 27 Oct, arriving in London Gatwick.Price includes taxes and charges.From Rs86,820, select.
London.Rs105,000 per passenger.Departing Sun, 26 Apr.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from San Juan Luis Munoz Marin on Sun, 26 Apr, arriving in London Gatwick.Price includes taxes and charges.From Rs105,000, select.
London.Rs112,332 per passenger.Departing Wed, 13 May.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from San Juan Luis Munoz Marin on Wed, 13 May, arriving in London Gatwick.Price includes taxes and charges.From Rs112,332, select.

Find the cheapest month to fly from San Juan to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Juan to London flights are currently cheapest in January.
Oct
from Rs86,820
Nov
from Rs75,157
Dec
from Rs71,965
Jan
from Rs48,131
Feb
from Rs76,618
Mar
from Rs81,748
Apr
from Rs105,000
May
from Rs112,332
Jun
Find prices
Jul
from Rs118,766
Aug
Find prices
Sep
from Rs128,094

Alternative San Juan to London routes

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

San Juan to London: Flight information

The things to know before you go.
Cheapest flight foundRs48,131
Cheapest month to flyJanuary

Finding cheap flights from San Juan to London: Frequently asked questions

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
The best price we found for a return flight from San Juan to London is Rs151,345. 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 Juan to London. But we found flights with one or more stops from Rs151,345.
As of October 2025, there are no flights flying from San Juan to London.
The cheapest month to fly from San Juan to London is usually October.
If you're flying from San Juan, the cheapest airport near London is London Heathrow – which is 22.9 km away from the centre of London. We've found flights into this airport from Rs151,345.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Juan to London on Wednesday, 29 October 2025.
No airlines currently offer direct flights between San Juan and London. 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 London 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 London is around 40 days in advance, so don’t leave your flight to the last minute.
In October, the average temperature is usually around 11°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.
The cheapest airline that flies to London is KLM .

Flying from San Juan to London: what you need to know

  • Planning your trip starts with working out where you'll leave from in San Juan. Luis Munoz Marin International Airport (SJU) is the city's main airport, so check out your options for booking a flight from San Juan to London taking off from here.

  • Jet into London Heathrow Airport (LHR) or London Gatwick Airport (LGW). You can also reach London through Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY).

  • London is four hours ahead of San Juan and follows the UTC+0 timezone.

  • For a stress-free start to your trip, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your San Juan to London flight.

  • You can expect bigger queues during popular months such as July. Arriving up to four hours ahead of an international flight and two hours for a domestic departure will give you plenty of time for security and boarding.

How to find the cheapest flights from San Juan to London

  • To pick up cheap San Juan to London flights, book as early as possible. Airlines typically offer the most competitive fares when flights are first released.

  • If you can be flexible with your travel plans, use the 'Whole month' search tool. It'll show you the lowest price in every month when looking for your plane ticket from San Juan to London.

  • There's no need to search every day to see if fares have dropped when you set up a Price Alert. We'll let you know when there's a better deal on cheap flights from San Juan to London.

  • Save money on your San Juan to London flight with the help of our filters. Select your preferred duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from San Juan

Luis Munoz Marin International Airport (SJU)

  • We make it a cinch to find a San Juan to London flight with a stopover. To see the options leaving from Luis Munoz Marin International Airport, uncheck 'Direct flights only.' Next, select a flight offering a stop long enough to tour the city of your choice. Top stopovers include:

    • John F. Kennedy International Airport (JFK)

    • Adolfo Suarez Madrid-Barajas Airport (MAD)

    • Logan International Airport (BOS)

  • The journey from central San Juan to SJU takes about 55 minutes on public transport. If you drive, ride-share or get a cab, you'll cover the 6 kilometres in 10 minutes or so, depending on traffic.

  • Searching for a convenient hotel close to Luis Munoz Marin International Airport? If you've booked an early flight from San Juan to London, these stays will put you moments from check-in:

  • Of the flights that depart from Luis Munoz Marin International Airport, 73.65% arrive on time at their destination.

Arriving in London

London Heathrow Airport (LHR)

  • London Heathrow Airport (LHR) to central London takes around 55 minutes to reach by car. The centre is roughly 23 kilometres away.

  • It typically takes 1 hour to get there on public transport.

  • Book a hotel close to LHR if you're coming in on a late flight from San Juan to London. Pick one of these accommodation options and skip the long transfer:

  • Travel at your own pace with a London Heathrow Airport rental car. Pick up your wheels from Surprice, U-Save or Green Motion and chase adventure across London and beyond.

  • Lock in the best possible rate by booking your vehicle from London Heathrow Airport around one week in advance of your trip.

London Gatwick Airport (LGW)

  • London Gatwick Airport (LGW) is roughly 40 kilometres from central London. Following your flight from San Juan to London, it takes approximately 1 hour 20 minutes to get to the heart of the city in a cab or ride-share.

  • Travelling by public transport will take approximately 30 minutes.

  • Hang the 'Do not disturb' sign on your door and rest at a hotel near LGW. Here are a few options where you can tuck yourself in after your flight from San Juan to London:

  • No need to worry about public transport schedules or waiting in a long cab line. Grab a London Gatwick Airport rental car and take your journey in whatever direction you like. Check out the availability and rates from Green Motion, U-Save and Drivalia.

  • Avoid potential price surges. Securing your ride three weeks ahead of your arrival at LGW will help you save.

Stansted Airport (STN)

  • Stansted Airport (STN) is about 48 kilometres from central London. It takes about 1 hour to get to the city centre by ride-share or cab once you've hopped off your flight from San Juan to London.

  • The journey will take you around 1 hour 25 minutes if you use public transport.

  • Choose a hotel near STN and get from baggage claim to bedtime in a flash. Whether you're catching a late San Juan to London flight or just want a hassle-free arrival, these accommodation options offer a quick route to a good night's sleep:

  • Begin your trip without stressing about how to get to where you're going with a Stansted Airport rental car. Book your wheels with reliable suppliers here like Green Motion, Drivalia and Europcar.

  • Plan ahead and pocket the savings. Book your vehicle from STN four weeks before your flight from San Juan to London to access the best rates.

Best time to go to London

  • July is the most popular month for flights from San Juan to London. To skip the crowds, visit London in February.

  • Lock in a San Juan to London ticket departing in July if you want to explore the city during its warmest month. Expect temperatures in London to range from 11ºC to 26ºC.

  • If you want cooler conditions, search for a cheap flight from San Juan to London in January when temperatures average between 0ºC and 9ºC.

More about London

Explore more of United Kingdom

  • You've seen London, now it's time to explore other parts of United Kingdom. Journey around 161 kilometres north-west to Birmingham to check off its top attractions. From Cadbury World to The Library of Birmingham and National Sea Life Centre, you've got a jam-packed schedule ahead.

  • If you're interested in discovering another major destination in United Kingdom, consider Bristol, roughly 177 kilometres west of London. Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park are key highlights.

Plan the rest of your trip from San Juan to London

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