£151 Find Cheap Flights from Puerto Rico to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Puerto Rico to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Puerto Rico to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Puerto Rico to London

mer., 5 nov. - lun., 17 nov.
 Logo
09:00 - 06:00SJU-LGW
17h 00m1 stop
 Logo
13:00 - 03:33LGW-SJU
18h 33m1 stop
mer., 5 nov. - lun., 17 nov.
 Logo
09:00 - 06:00SJU-LGW
17h 00m1 stop
 Logo
13:00 - 17:54LGW-SJU
32h 54m1 stop
dim., 9 nov. - jeu., 20 nov.
KLM Logo
13:57 - 07:50SJU-LHR
13h 53m1 stop
KLM Logo
10:10 - 23:56LHR-SJU
17h 46m1 stop
£419KLM
Find Deal
mar., 11 nov. - jeu., 20 nov.
KLM Logo
14:10 - 08:05SJU-LHR
13h 55m1 stop
KLM Logo
12:30 - 23:13LHR-SJU
14h 43m1 stop
£420KLM
Find Deal
mer., 5 nov. - mer., 19 nov.
British Airways Logo
18:42 - 12:05SJU-LHR
13h 23m1 stop
British Airways Logo
13:10 - 23:52LHR-SJU
14h 42m1 stop
£423British Airways
Find Deal
sam., 4 oct. - mar., 14 oct.
Delta Logo
17:41 - 07:15SJU-LHR
32h 34m1 stop
Delta Logo
09:55 - 23:56LHR-SJU
19h 01m2 stops
£425Delta
Find Deal
mer., 24 sept. - mer., 1 oct.
United Airlines Logo
15:56 - 11:45SJU-LHR
14h 49m1 stop
United Airlines Logo
13:00 - 23:57LHR-SJU
15h 57m1 stop
£427United Airlines
Find Deal
mar., 14 oct. - mer., 22 oct.
United Airlines Logo
01:05 - 20:40SJU-LHR
14h 35m1 stop
United Airlines Logo
08:30 - 23:57LHR-SJU
20h 27m2 stops
£429United Airlines
Find Deal
mer., 29 oct. - jeu., 6 nov.
Delta Logo
07:15 - 08:45SJU-LHR
21h 30m2 stops
Delta Logo
15:50 - 14:12LHR-SJU
26h 22m2 stops
£433Delta
Find Deal
dim., 26 oct. - dim., 2 nov.
British Airways Logo
05:30 - 07:50SJU-LHR
22h 20m1 stop
British Airways Logo
12:10 - 23:58LHR-SJU
15h 48m1 stop
£484British Airways
Find Deal

Everything you should know

When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 17% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£414
Multi-carrier
mer. 5/11lun. 17/11
SJU - LGW • 1 stop
Cheapest one-way flight
£151
Multi-carrier
ven. 3/10
SJU - LGW • 1 stop
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Booking Insights

KAYAK's insights & trends for flights to London

Get data-powered insights and trends into flights to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to London is February, where tickets cost £492 on average for return flights. On the other hand, the most expensive months are June and August, where the average cost of tickets from Puerto Rico is £816 and £718 respectively. For one-way flights, the best month to travel is February with an average price of £492.

How far in advance should I book a flight to London?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 3 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Which is the cheapest airport to fly into in London?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in London is London Southend Airport (SEN), with an average flight price of £134.

Good to know - Cheap tickets from Puerto Rico to London

Low seasonFebruary
Cheapest flight£151
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly and prices are also 0% lower on average.
Flight from San Juan to London Gatwick Airport

FAQs - booking London flights

  • Which London airport is closest to central London?

    There are 6 major airports in London. The nearest airport from London city centre is London City (8 miles), followed by London Heathrow Airport (14 miles), London Gatwick Airport (24 miles), and London Luton Airport (28 miles).

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Tuesday where round-trip tickets can be as cheap as £465. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are £1,048 on average.

  • How does KAYAK find such low prices on flights to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to London?

    The cheapest time of day to fly to London is generally in the evening, when round-trip flights cost £661 on average. The most expensive time of day to fly to London is generally in the morning, which is peak travel time and where the average cost of a ticket is £1,144.

  • How many direct flights to London are there each week?

    Each week there are around 802 direct flights from within Puerto Rico to London. The most common day for departures is Friday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to London

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Luton
Hounslow
Southend-on-Sea
Slough
Winchester
Croydon
Stansted
Folkestone
Chichester
Maidstone
Colchester
Chelmsford
Crawley
Bedford
Richmond
Hastings
Watford

Everything you need to know for your flight to London

Cabin class types available on flights to London

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.