£274 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 4/12. 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

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Cheap Flights from London to Puerto Rico

Cheapest return prices found by our users on KAYAK in the last 72 hours
Aguadilla
Aguadilla1 stop£617
Aguadilla
Aguadilla1 stop£617

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

Thu, 6 Nov - Mon, 10 Nov
 Logo
14:00 - 02:54LGW-SJU
16h 54m1 stop
 Logo
09:00 - 06:00SJU-LGW
17h 00m1 stop
Thu, 9 Oct - Wed, 15 Oct
 Logo
14:00 - 01:44LGW-SJU
16h 44m1 stop
 Logo
02:49 - 10:00SJU-LGW
26h 11m1 stop
Fri, 20 Feb - Sun, 1 Mar
JetBlue Logo
07:25 - 23:47LHR-SJU
20h 22m1 stop
JetBlue Logo
06:00 - 20:45SJU-LHR
34h 45m1 stop
£499JetBlue
Find Deal
Wed, 1 Oct - Tue, 7 Oct
 Logo
14:00 - 14:11LGW-SJU
29h 11m1 stop
 Logo
02:49 - 10:00SJU-LGW
26h 11m1 stop
Tue, 9 Sep - Sun, 21 Sep
Icelandair Logo
08:15 - 22:32LHR-SJU
19h 17m1 stop
Icelandair Logo
06:00 - 06:30SJU-LHR
19h 30m2 stops
£500Icelandair
Find Deal
Wed, 8 Oct - Wed, 15 Oct
JetBlue Logo
08:15 - 21:24LHR-SJU
18h 09m1 stop
JetBlue Logo
13:25 - 09:30SJU-LHR
15h 05m1 stop
£501JetBlue
Find Deal
Tue, 9 Sep - Wed, 24 Sep
Icelandair Logo
08:15 - 22:32LHR-SJU
19h 17m1 stop
Icelandair Logo
06:00 - 06:30SJU-LHR
19h 30m2 stops
£504Icelandair
Find Deal
Mon, 19 Jan - Mon, 26 Jan
Iberia Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£932Iberia
Find Deal
Fri, 30 Jan - Wed, 18 Feb
Iberia Logo
07:50 - 16:35LCY-SJU
12h 45m1 stop
Iberia Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£964Iberia
Find Deal
Mon, 15 Dec - Sun, 28 Dec
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£1,775British Airways
Find Deal
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 September, when tickets cost £538 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is £942 and £937 respectively.

What’s the cheapest day of the week to fly from London to Puerto Rico?

The average price of all round-trip flights from London to Puerto Rico clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Puerto Rico on a Monday and more expensive on a Friday. On your return trip to London, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

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 2 weeks before departure, which saves you about 28% 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 seasonJune
Cheapest flight£274
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (40% more expensive on average)
Flight from London Gatwick 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.

  • What is the cheapest time of day to fly to Puerto Rico?

    The cheapest time of day to fly to Puerto Rico is generally in the morning, when retur flights cost £762 on average. Morning departures are around 13% cheaper than evening flights, on average. The most expensive time of day to fly to Puerto Rico is generally at night, which is peak travel time and where the average cost of a ticket is £973.

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.
7.6
FinnairOverall score based on 1320 reviews
7.6Boarding
6.9Entertainment
7.5Comfort
8.1Crew
6.7Food
Airline reviews

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

10.0 ExcellentSarah, Aug 2025CPH - HEL
Read more Finnair reviews

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

JetBlue is always consistent and great, the food is limited in selection, but at least you can grab as much as you want on snacks and drinks at the Blue Locker.

The plane was late to leave.. Internet was lousy. TV was not working. when we arrived, We stayed on the plane for a long time before we got to the gate. It took us a long time to retrieve our luggage because they didn’t know what carousel to send them to. It was a bad experience.

Seats were not too comfortable; it was impossible to locate the underseat power outlet.

You get what you pay for with JetBlue. Every little thing costs more, you are nickel and dimed until the end. Entertainment doesn’t function. Flight attendants do the bare minimum.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Excellent from start to finish. All staff members were amazing!

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

It was too hot in the cabin. The AC did not help.

The regular feedback of any changes to our flights. The Jetblue staff were very helpful. Our flights were great. Lots of leg room!

No music app working: no economy meal on five hour flight; hour on tarmac at the end waiting for a gate. Flight itself was smooth and easy.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

There was no lounge at Boston for us to use. Typically flying first class overseas comes with lounge privileges. The seats did not recline even a little. My headset only worked on one side. I felt like I was flying on Ryan Air, not Icelandic Air.

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

Still one of my favorite airlines, but the entertainment options were a bit lacking. It didn't help that my screen didn't work on one of the legs of the trip.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very uncomfortable.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

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.

Flight was delayed 3 hours and 15 minutes. The delay caused me to miss my tour group due to arriving late.

Well my luggage was damaged and they lost the plastic cover. I need to file a claim and I would like for someone to follow up with me on this. Thanks.

Excellent! Outstanding customer service, the best service I have received. Food was served, dinner, snacks, beverages, crew was there to greet you. 10/10

Charging $300 to be able to pick a seat next to your wife was nothing less than extortion.

I’m very mad because I paid an extra $105 to change seats to an exit row with more leg room. The app clearly showed a gap in between the seats in the row I changed my seat to and I paid for it. When I boarded the plane, it wasn’t an exit row seat and no more room than my original seat. I feel like I was ripped off $105.

I had a great experience , crew was great and enjoyed the entertainment options I will be booking my next International trip with them .

We missed the connection because we had to wait for a shuttle from the plane to the Terminal. Also, we needed assistance and none was available.

When we arrived at the airport - 1st step - printing out your boarding pass - no issue. Not long lines as these machines. 2nd step - processing your bag drop off. There was only one associate there to help 10 kiosks. We had a family in front of us for 20 minutes trying to work on the machine and figure out every step for 4 pieces of luggage. My husband alerted the associate who was able to assist the family. Highly suggest that there are more associates to assist in this process. Besides this issue, security check went very quickly. Our flight was direct to Philadelphia. We had to carry our bags down two flights of steps, then out to the tarmac to a bus, then carry our bags up two flights of stairs to the plane. No one on the flight was expecting that long trek. I could see some people were struggling a bit. All in all - great flight crew, plane was clean and food was great!

The space is tight. Either you sit straight up the whole time, but the minute you relax, your knees hit the back of the seat in front of you. My seat would not recline so I was quite uncomfortable. Didn’t use my tray table bc it was stained and sticky and nasty. I was also seating in one of the last rows and one crew member and people going to the bathroom kept hitting my elbow resting on the armrest.

Flight was delayed for 2h. Announcements were poor and I was given 1 biscuit and a bottle of water as consolation. Not happy.

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

The crew’s professionalism was top notch and the food and drinks available were excellent. I only ask that we get the refurbished 777’s on the London to Bermuda route that I had for the London to Singapore leg. The updated infotainment system is much better than the older version

Checking in prior on line and wait time at Gatwick was terrible. I would rate a big fat ZERO.

I checked in to bags, one arrived one was delayed. I did not receive the bag for 4 days - arrived on Tuesday, received bag on Saturday!

It was ok. Our flight was delayed 2 hours, and then again on arrival. The explanation given felt feeble.

The booking agent, cheapflightsfares, messed up, and the information for the seats we paid extra for was not sent to American Airlines. We were separated on the return flight and sent to the lowest economy section. The flight attendant helped arrange seating at the back of the plane to allow my wife and me to sit together.

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.

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