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£214 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 11/7. 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

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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Cheap Flight Deals 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.

Recent return flight deals from Puerto Rico to London

KAYAK's recommended return flight deals from the most popular airlines that fly from Puerto Rico to London.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
JetBlue Logo
03:15 - 20:45SJU-LHR
12h 30m1 stop
JetBlue Logo
11:55 - 21:18LHR-SJU
14h 23m1 stop
£477JetBlue
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Sat, 27 Sep - Tue, 7 Oct
JetBlue Logo
03:15 - 20:45SJU-LHR
12h 30m1 stop
JetBlue Logo
11:55 - 01:45LHR-SJU
18h 50m1 stop
£487JetBlue
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Wed, 24 Sep - Fri, 10 Oct
Icelandair Logo
03:15 - 20:45SJU-LHR
12h 30m1 stop
Icelandair Logo
08:25 - 21:18LHR-SJU
17h 53m2 stops
£512Icelandair
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Mon, 29 Sep - Mon, 6 Oct
British Airways Logo
08:30 - 06:55SJU-LHR
17h 25m1 stop
British Airways Logo
20:00 - 20:10LHR-SJU
29h 10m2 stops
£528British Airways
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Tue, 30 Sep - Mon, 6 Oct
American Airlines Logo
11:55 - 06:55SJU-LHR
14h 00m1 stop
American Airlines Logo
06:15 - 18:35LHR-SJU
17h 20m1 stop
£530American Airlines
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Wed, 10 Sep - Thu, 18 Sep
KLM Logo
14:39 - 11:10SJU-LHR
15h 31m1 stop
KLM Logo
09:55 - 22:08LHR-SJU
17h 13m2 stops
£536KLM
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Wed, 27 Aug - Tue, 9 Sep
KLM Logo
12:43 - 08:50SJU-LHR
15h 07m1 stop
KLM Logo
09:55 - 22:42LHR-SJU
17h 47m2 stops
£543KLM
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Tue, 2 Sep - Tue, 9 Sep
American Airlines Logo
13:54 - 10:20SJU-LHR
15h 26m1 stop
American Airlines Logo
06:10 - 18:30LHR-SJU
17h 20m1 stop
£549American Airlines
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Fri, 22 Aug - Fri, 5 Sep
British Airways Logo
13:54 - 10:20SJU-LHR
15h 26m1 stop
British Airways Logo
20:00 - 18:30LHR-SJU
27h 30m1 stop
£591British Airways
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Fri, 22 Aug - Mon, 1 Sep
Icelandair Logo
12:55 - 11:55SJU-LHR
18h 00m2 stops
Icelandair Logo
13:05 - 01:45LHR-SJU
17h 40m2 stops
£785Icelandair
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Thu, 25 Sep - Fri, 10 Oct

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 day to fly to London?

The average price of all round-trip flights to London clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to London is Tuesday where round-trip tickets can be as cheap as £474. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are £1,068 on average.

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 September, where tickets cost £498 on average for return flights. On the other hand, the most expensive months are June and July, where the average cost of tickets from Puerto Rico is £749 and £734 respectively. For one-way flights, the best month to travel is September with an average price of £498.

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

The average price for all round-trip flights to London depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
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 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. For the absolute cheapest price, our data suggests you should book 5 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 Stansted Airport (STN), with an average flight price of £80.
Find deals

Good to know - Cheap tickets from Puerto Rico to London

Low season

February

High season

May

Cheapest flight

£214
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (5% more expensive 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).

  • 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.

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

    Each week there are around 798 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.

See more FAQs

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.

Top airline flying from Puerto Rico to London

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IcelandairOverall score based on 484 reviews
7.1Entertainment
7.0Comfort
8.0Crew
7.1Boarding
6.3Food
Airline reviews

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

10.0 ExcellentJames, Apr 2025MAN - KEF
Read more Icelandair reviews

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

The flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

Overall good. I was surprised how easy it was to get from plain to plain in such a short time. Food choices were not so great and quite expensive. Entertainment was ok. Flights were smooth.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Horrible. The flight was delayed by over 3 hours but updates were barely provided. Boarding started 3 hours late then stopped because their system crashed. So now, passengers were standing for 15 minutes in the open waiting to get boarding passes scanned and get on a bus. Duty-free closed around 4-4:30. Only 1 food outlet was open and it was super slow and busy since it was serving passengers from multiple flights. So a number of passengers couldn't buy meals at the terminal. Since the flight was delayed by over 3 hours, we could have been offered snacks on-board. Nothing. The seats barely reclined. In-flight entertainment options were pitiful. Overall, a miserable experience. Never flying on Icelandair ever again. :(

Bad. Flights were late, by hours. No clear information was provided even until the delayed boarding time.

Travelling to a place near London?

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

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.
First Class flights to London
Business Class flights to London
Prem Econ Class flights to London
Economy class flights to London

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