£322 Find Cheap Flights from London to Puerto Rico

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Puerto Rico departing on 16/5. 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, 0 bags

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Book Cheap London to Puerto Rico Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Puerto Rico 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 London to Puerto Rico

Wed, 16 Sep - Wed, 23 Sep
JetBlue Logo
08:15 - 19:32
LHR
-
SJU
16h 17m
1 stop
JetBlue Logo
19:00 - 20:45
SJU
-
LHR
20h 45m
1 stop
£605JetBlue
Thu, 4 Jun - Tue, 9 Jun
JetBlue Logo
12:20 - 21:42
LGW
-
SJU
14h 22m
1 stop
JetBlue Logo
05:01 - 09:35
SJU
-
LGW
23h 34m
1 stop
£608JetBlue
Mon, 1 Jun - Sun, 7 Jun
JetBlue Logo
12:20 - 21:42
LGW
-
SJU
14h 22m
1 stop
JetBlue Logo
05:01 - 09:35
SJU
-
LGW
23h 34m
1 stop
£625JetBlue
Sun, 7 Jun - Sun, 14 Jun
TAP AIR PORTUGAL Logo
12:20 - 21:42
LGW
-
SJU
14h 22m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 09:35
SJU
-
LGW
22h 35m
1 stop
£629TAP AIR PORTUGAL
Mon, 14 Sep - Sun, 27 Sep
JetBlue Logo
08:15 - 22:42
LHR
-
SJU
19h 27m
1 stop
JetBlue Logo
06:00 - 20:45
SJU
-
LHR
33h 45m
1 stop
£632JetBlue
Fri, 22 May - Sun, 31 May
JetBlue Logo
12:20 - 00:19
LGW
-
SJU
16h 59m
1 stop
JetBlue Logo
05:01 - 09:35
SJU
-
LGW
23h 34m
1 stop
£633JetBlue
Thu, 14 May - Mon, 18 May
British Airways Logo
09:35 - 19:05
LCY
-
SJU
14h 30m
1 stop
British Airways Logo
20:40 - 15:15
SJU
-
LCY
13h 35m
1 stop
£1,102British Airways
Wed, 16 Sep - Wed, 23 Sep
Iberia Logo
19:15 - 15:25
LCY
-
SJU
25h 10m
1 stop
Iberia Logo
17:15 - 15:15
SJU
-
LCY
17h 00m
1 stop
£1,122Iberia
Thu, 11 Jun - Sun, 14 Jun
United Airlines Logo
09:30 - 23:09
LHR
-
BQN
18h 39m
2 stops
United Airlines Logo
00:15 - 20:40
BQN
-
LHR
15h 25m
1 stop
£1,134United Airlines
Thu, 11 Jun - Sun, 14 Jun
United Airlines Logo
07:30 - 23:09
LHR
-
BQN
20h 39m
2 stops
United Airlines Logo
00:15 - 06:55
BQN
-
LHR
25h 40m
2 stops
£1,138United Airlines
Booking Insights

KAYAK's insights & trends for London to Puerto Rico flights

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

What is the cheapest month to fly from London to Puerto Rico?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Puerto Rico, 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 from London to Puerto Rico is July, when tickets cost £140 (return) on average. On the other hand, the most expensive months are February and December, when the average cost of return tickets is £942 and £480 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Puerto Rico, 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 on a flight from London to Puerto Rico, you should book around 4 weeks before departure, which saves you about 18% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know - Cheap tickets from London to Puerto Rico

Low seasonSeptember
Cheapest flight£322
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (37% more expensive on average)
Flight from London Stansted Airport to San Juan

FAQs - booking Puerto Rico flights

  • Do I need a car seat to drive in Puerto Rico?

    In Puerto Rico, children under 12 years may not sit in the front seat. If your kid is between four and eight years or has a height of fewer than 57 inches, you are legally required to place them in a booster seat. A child safety seat is mandatory for children under four years.

  • Do I need a visa to visit Puerto Rico?

    UK citizens need a visa to travel to Puerto Rico. It may take up to five days to acquire the visa, so be sure to start the application process a few days before your flight. Note that the Puerto Rican Counsel has the discretion to offer visas or not.

  • Which airport is closest to El Morro Fort?

    If you are in Puerto Rico to explore the remarkable beauty of the centuries-old El Morro Fort, consider making Luis Muñoz Marín International Airport your arrival point. You can take a taxi to the fort and arrive in roughly 30 minutes. If not in a hurry, taking a bus is more fun. Buses go as far as Cataño, where you can take a ferry to El Morro Fort.

  • Which airlines fly direct from London to Puerto Rico?

    No airlines provide direct flights from London to Puerto Rico. However, most of them offer one-stop trips. If you prefer a stop in Miami, fly with Finnair. You may use JetBlue if you are up for a stop in Boston or New York.

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

    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 from London to Puerto Rico.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London to Puerto Rico 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 from London to Puerto Rico?

    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 from London to Puerto Rico up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding a cheap flight from London to Puerto Rico

  • London Heathrow (LHR) is the departure point for some of the cheapest flights from London to Puerto Rico. The airport is also an ideal place to board your plane as most airlines for the London-Puerto Rico route start their flights here. Further, it is an excellent place to treat yourself to shopping therapy, having been voted the best airport to shop for several years. Other departure airports include London Gatwick (LGW), London Stansted (STN), London City Airport (LCY), and London Luton (LTN).
  • At the moment, direct flights from London to Puerto Rico are unavailable. Thus, consider selecting a flight route with a stop in a city you would love to tour. Possible stopovers occur in major US cities such as Miami, Charlotte, and Boston. Trips may feature at most two transfers. Note that one-stop flights are cheaper than journeys with two stopovers.
  • At the end of your journey, you may arrive at any of three major airports in Puerto Rico. Most flights arrive at Luis Muñoz Marín International Airport (SJU). Given its accessibility and proximity to San Juan, the airport is an excellent arrival point for travellers who wish to tour Eastern Caribbean. Additionally, the airport is ideal for sightseers travelling to cities like Bogota and Panama. The other two airports, Rafael Hernández Airport and Mercedita International Airport, are favourable for those planning to tour the Northwest and South parts of Puerto Rico, respectively.
  • Being a large city, most London airports are usually busy and feature long queues at security checkpoints. Notably, London Gatwick has shorter lines. The airport has automatic gates, which keeps delays low. However, the airport opens its boarding gates a few minutes before departure. If you arrive too early, you may have to spend some money dining in its on-site restaurants.
  • Touring the numerous attractions in Puerto Rico is more fun with a rental car. At Luis Muñoz Marín International Airport, the car rental centre is on the first floor of the terminal building. Similarly, you can hire your preferred vehicle type at Rafael Hernández Airport at the counters located in the Baggage Claim area. If you arrive at Mercedita International Airport, rent a car in the terminal building near Baggage Claims.

Reviews of the top 5 airlines flying from London to Puerto Rico

 
Need help choosing which airline to fly with from London to Puerto Rico? 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.
7.1
JetBlueOverall score based on 2968 reviews
7.5Comfort
7.2Entertainment
7.3Boarding
7.9Crew
6.6Food
Airline reviews

We were delayed and had to circle due to weather and had to divert for fuel. While I understand that you can’t control the weather I would have appreciated knowing that the crew wasn’t going to run out of hours and then having to spend the night in the Raleigh airport.

6.0 GoodBill, Apr 2026
EWR - MCO
Read more JetBlue reviews

We were delayed and had to circle due to weather and had to divert for fuel. While I understand that you can’t control the weather I would have appreciated knowing that the crew wasn’t going to run out of hours and then having to spend the night in the Raleigh airport.

Messy plane that was falling apart Small screens that didn't work

I specifically choose not to check bags to ensure I can proceed directly to ground transportation upon arrival. However, due to a recurring lack of cabin space, I was again forced to gate-check my rolling luggage after going through my luggage to take out electronics and batteries. This practice unilaterally changes the service agreement made at the time of purchase. JetBlue needs to find a better way to manage overhead space that honors the carry-on baggage allowance.

I was denied a plastic fork to eat my food and was told plastic forks are for paying customers who buy Jet Blue’s food. So I had to make a utensil out of a cup so nourish my body. Like a refugee. Because decency is dead.

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

There was a fowl odour coming from the lavatory the entire flight

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

very difficult boarding process - aggressive passengers not the friendliest crew

The movie choices were poor. The worst problem is the treatment of passengers durinng pre-boarding. In one case the primes were checked in and sent down the boarding tunnek only to stand waiting there while the plane is cleaned. In the second case the bus was loaded, the doors closed and just stood there unmoving like sardeines in a tin for over TEN minutes. In both cases it was rough on us old guys who find standing for long periods trying.. In other words, Donnt just stack us up and forget us.

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

Nice, quick flight. There were lots of empty seats so they told me I could sit next to the emergency exit where I would have more legroom.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

why can't planes be boarded from back to front?? everything was great otherwise

We were delayed 2 hours because the crew was late. They need better planning by the crew, we had to sit in uncomfortable seats waiting for them.

Difficulty to check in online, but well handled at the airport. Flight delay was unfortunate. Crew was adequate but not what we have usually experienced from BA. Seat was not comfortable.

Transportation from gate to airplane was poor we stayed in hot bus for 20 minute no vantilation

Good Poor. service onboard No food. Low quality for economy plus

Boarding an international flight via several sets of stairs and shuttle busses to the tarmac even when multiple jet-bridges were empty at Madrid airport (the hub for Iberia) was not pleasant. I was fine, but a lot of elderly folks and families with kids were struggling. A bad way to start a flight. Business class seats were nice, although not cleaned well from the prior flight.

The plane needs upgrading, the seats are uncomfortable, we are a family of three and they split us and did nothing to group us together, and the food is horrible compared to other airlines bu

The flight was delayed over 4 hours. Business class is just slightly upgraded economy.

One of the crew members hit me with the car and not even says anything

ground crew and check-in was pathetic - insisted on charging me for luggage even though the ticket said it was already included. They also accidentally sent my luggage through without a luggage tag and had to retrieve it. Generally, it was like a bad movie.

A shout-out to the flight attendent, Lauren, who was the main person assisting me. She was amazing - perfect balance of bright, cheerful, engaging, yet formal

Cramped seating but standard in all smaller aircrafts today no matter what airlines. Crew very helpful, friendly & attentive so makes up for that.

Wonderful business class flight in a lovely new plane with an excellent crew

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

I alrady responded to this request, and expllaned at length that this was the worst flying experience in my 77 years. I will NEVER fly BA again.

Airbus A350 is poorly designed for wheelchair users and reduced mobility passengers. The angle of the pods makes it awkward to transfer. I was able to but I have ab stability. It could be a real challenge for people with more severe mobility impairments. You'd think Airbus would have come up with a solution for this or thought more about us disabled folks more when designing this aircraft.

The crew has always been great on BA. They are very friendly and accommodating. I like that they have vegetarian options already in the menu. And the free wine is a nice perk.) I noticed (both directions of my trip) minor upgrades/ replacements needed on the plane itself (touch screen didn't work with touch; bathroom light didn't go on). However, this is one of my favorite airlines.

It was not British Air, we were put onto Air Portugal for our London to Lisbon leg.

The crew was great! They waited for me as Air Canada flight was delayed by 1:15 hours from Ottawa to Toronto. I am a bit disappointed that we could only use wifi for entertainment but I survived! The only thing I would of liked is a more comfortable seat. The seat cushions are not thick enough for flights longer than 3 hours. Aside from that, everything was great.

Overall, the flight went well and the service was good. However, there was a very frightening moment during landing in Bogotá. Just as the plane was about to touch down, it suddenly went back up into the air. The aircraft was not descending straight and seemed to move left and right, which made the situation feel unstable. This was quite scary. After going back up, the plane circled for about 15 minutes before attempting to land again. Although I understand that safety always comes first and situations like this can happen, it was still a shocking experience for passengers.

They should provide water to passengers who ask for it

Seating was tight. Seats don't recline. Initial flight was cancelled. Lost two days of vacation.

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

I actually upgraded to the medium level of seats from basic and even doing that it may have been physically the most uncomfortable flight I have ever had. They packed everyone like is a train to death camp. It was a red eye so I hoped to get some sleep but it was physically impossible to find a comfortable way to rest. I met other folks on the same flight and they said the same thing. It was an utterly miserable flight and if I have any other options I will never fly with them again

Avianca has transitioned from full service legacy airline to "low cost" but has now became a strange hybrid (minimum leg space, started offering business class in domestic flights again, charges passenger for printing boarding pass, etc.). National and international coverage and destinations are really wide but service is not at its best

Deplaning was a mess, I sat in business (seats are horrible) and the front door had a problem so we had to deplane from the rear exit. The stairs were not tall enough to reach so there was a large step down from the plane to the top of the stairs.

Pros: we leave and arrive on time Cons: the most uncomfortable seats ever. You cant recline at all your seats. No entertainment No TVs flight attendants didn't provide even a glass of water. You have to go to back of the airplane and ask for one. I am Colombian and I remember seeing the flight attendants very neat, elegants which is or was a staple of Avianca.it was one with tennis shoes, no male up, the hair was messy... that was really odd.

Everything you need to know for your flight from London to Puerto Rico

Cabin class types available on flights to Puerto Rico

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