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LON - SJU

£242 Find cheap flights from London to San Juan

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 San Juan 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
0 bags
Sun 2/6
Sun 9/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Juan.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Juan.
In the last 7 days, travellers have searched 43,740,974 times on KAYAK, and here's why:

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Cheap flight deals from London to San Juan (LON-SJU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to San Juan 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 and deals for you by selecting your travel dates.
Choose your dates
10:00 - 18:57LGW-SJU
13h 57m1 stop
23:07 - 06:20SJU-LGW
26h 13m2 stops
Fri, 17 May - Thu, 23 May
10:30 - 01:31LGW-SJU
20h 01m1 stop
10:30 - 06:35SJU-LGW
15h 05m1 stop
£477JetBlue
Find Deal
Tue, 10 Sep - Wed, 18 Sep
10:30 - 19:45LGW-SJU
14h 15m1 stop
10:30 - 06:50SJU-LGW
15h 20m1 stop
£494JetBlue
Find Deal
Tue, 1 Oct - Mon, 7 Oct
06:15 - 18:20LHR-SJU
17h 05m1 stop
14:09 - 10:50SJU-LHR
15h 41m1 stop
£500Finnair
Find Deal
Wed, 11 Sep - Wed, 18 Sep
08:20 - 20:11LHR-SJU
16h 51m2 stops
15:54 - 09:05SJU-LHR
12h 11m1 stop
£533Finnair
Find Deal
Fri, 20 Sep - Mon, 30 Sep
09:15 - 20:11LHR-SJU
15h 56m2 stops
15:54 - 10:50SJU-LHR
13h 56m2 stops
£858American Airlines
Find Deal
Mon, 30 Sep - Mon, 7 Oct
08:40 - 23:24LCY-SJU
19h 44m2 stops
08:00 - 08:10SJU-LCY
19h 10m2 stops
£1,060Virgin Atlantic
Find Deal
Thu, 29 Aug - Thu, 5 Sep
09:15 - 23:57LCY-SJU
19h 42m2 stops
09:30 - 16:25SJU-LCY
25h 55m2 stops
£1,123Lufthansa
Find Deal
Mon, 3 Jun - Mon, 10 Jun
19:10 - 23:57LCY-SJU
33h 47m2 stops
09:30 - 17:15SJU-LCY
26h 45m2 stops
£1,244Lufthansa
Find Deal
Mon, 8 Jul - Sat, 20 Jul
09:20 - 22:59LCY-SJU
18h 39m2 stops
08:00 - 07:15SJU-LCY
18h 15m2 stops
£1,452Virgin Atlantic
Find Deal
Wed, 9 Oct - Sun, 13 Oct

Flights from London to San Juan - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from London to San Juan?

The average price of all flights from London to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from London to San Juan, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from San Juan, Monday is the cheapest day to fly and Tuesday is the most expensive.

What is the cheapest month to fly from London to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London to San Juan Luis Munoz Marin Intl Airport, 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 San Juan Luis Munoz Marin Intl Airport is February, where tickets cost £537 on average. On the other hand, the most expensive months are August and December, where the average cost of tickets is £838 and £818 respectively.

How far in advance should I book a flight from London to San Juan Luis Munoz Marin Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London to San Juan Luis Munoz Marin Intl Airport, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 33 days before departure.

Which airlines provide the cheapest flights from London to San Juan?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on TAP AIR PORTUGAL (£525) and Avianca (£560). The cheapest round-trip tickets were found on JetBlue (£477) and Finnair (£500).

Good to know - Cheap tickets from London to San Juan

Low season

September

High season

March

Cheapest flight

£242
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly and prices are also 17% lower on average.
Flight from London Gatwick Airport to San Juan

When to book flights from London to San Juan

Are your dates flexible? Find out the best times to travel from London to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London to San Juan flights

  • What is the cheapest flight from London to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from London to San Juan Luis Munoz Marin Intl Airport was £303 for a one-way ticket and £579 for a return.

  • Which airports will I be using when flying from London to San Juan?

    London has 5 major airports: London City, London Gatwick, London Heathrow, London Luton, and London Stansted. San Juan Luis Munoz Marin Intl is the only airport in San Juan. You’ll usually find the cheapest deals if you fly from London Gatwick Airport.

  • Which aircraft models fly most regularly from London to San Juan?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to San Juan?

    Star Alliance, and oneworld are the airline alliances operating flights between London and San Juan, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from London to San Juan, Finnair or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from London to San Juan are Finnair and Virgin Atlantic. With an average price for the route of £576 and an overall rating of 7.7, Finnair is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £913 and an overall rating of 7.7.

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

    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 San Juan.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from 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 from London to San Juan?

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

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

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

See more FAQs

Top 5 airlines serving from London to San Juan

 
See real verified KAYAK customer reviews for airlines flying from London to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to San Juan? 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.
7.7
FinnairOverall score based on 1379 reviews
8.2Crew
6.9Food
7.0Entertainment
7.8Boarding
7.6Comfort
Airline reviews

All good- I love BA and the professionalism of the crew and pilots.

8.0 ExcellentAnonymous, Apr 2024JFK - LHR
Read more about Finnair reviews

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Security was a mess at the Helsinki Airport. But I was delighted by the connecting flight waiting for us for JFK.

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

Quick flight. But cabin crew were very noisy and talking too much, especially when we were seated at the back of the plane trying to sleep through the night .

My ticket was for Premium Economy and all the seats were taken, I was placed in Economy class and I’m looking for a refund.

Unfortunately delayed 2 hrs due to faulty tyre.. which had to be changed, but better safe than sorry.

Hi vergin Atlantic service was good but the flight ticket agent travel up charge me extra 57 pounds as a airport charges, actually I refuse to pay but they say if I not pay £57 then they say you will not be able to travel from Heathrow to goa ,so for me there was no option and it was just 3 day before my departure so i paid, so please look in to the matter. And I have a receipt of £ 57 as well .thanks

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

Very good. Glad we had Premium for the flight out.

We flew Upper Class from London to The Turks and Caicos. Check in was amazing. Our ldriver too us directly to a special entrance to terminal 3. It took 10 minutes to check in and clear customs. Amazing! The VA lounge is large and comfortable. Boarding the flight was easy and without a wait. The crew was excellent. But the seats were awful, strange and uncomfortable. Having a comfortable flat bed seat is the reason we pays 1000s extra. The VA 787 uses a reverse herringbone configuration. Look it up. You have your back to the window and are facing the aisle with no privacy. Turning the seat into a bed requires assistance from the crew so not very spontaneous. . The food was ok. A bit tasteless and meager portions. Had to pay for WiFi. I believe VA has other configuration on their dream airbus flights. Lots of stuff about all this on YouTube where you can see what I have been describing. I can not recommend taking VA on a long flight with these seats.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff were fantastic friendly nice they came round and check we need anything else to eat or drink

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

at the time for boarding the lady just call Group A and no other goups and everybody from A to F go inside without the right turn,and when we get in theres no more spsce for carry on , the ones that get in at not correct group from the back occupy our space !!!!! a mess !!!!

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

The boarding and flight were ok, but there were several painful issues. The flight was 3:20 in the air and almost four hours door to door, but they only had snack packs on the plane. They really need to have food on longer flights or make it clear to everyone that they won’t have food. They also advertise free WiFi, but it did not work for 90% of this flight. Again, almost four hours door to door. If I had known I was flying spirit for JetBlue prices then I would have planned differently.

We liked the flight, but not in JFK, not in Gatwick it is no lounge and this was surprising and disappointing. I think by now it is understandable that COVID will not go away and why it should not be business lounge?

I think the food / snack service was very poor. tehy could have done better. Evrything else was great

No wifi, not even while close to the continental US or Puerto Rico, no entertainment whatsoever (TVs not working). Totally disappointing.

Wifi screens were great. Both flights were delayed, spending all day flying home and then getting home at 3am ruins the next day also.

Pros: "This time NOTHING"
Cons: "Plane seats weren’t cleaned well. I wiped my chair, tray, window and wipe was all grey/brown dirty. Yuck! Very disappointing jetBlue. You used to be my favorite but no more. 2.5 hour of delay to pick someone special to board the plane. Ridiculous! 2.5 hour of delay and excuse was navigation not working you have to pick paperwork however picking paperwork took 1.5 hour? You think people will believe this while you get this special person to just walk in and board the plane on the (exit) seats 4 rows had been kept empty just for him. I demand my money back. Poor poor poor service JetBlue"
Pros: "Seat was comfortable, entertainment was excellent, the inflight crew was goo"
Cons: "Food was terrible, there were no options. Tha airport crew was horrible, I was more than an hour in the line, what could perceive is that there is not enough personnel, also what I consider disrespectful is that although people for Puerto Rico flight was standing on the line on time, they were trying to cope with their delay on other flights, and they had all the line waiting until they finished with the other flights. THAT was absolutely disrespectful of others time, I was there carrying my carry on baggage. Abdul rely HORRIBLE. When they finally called me there was no education to say even Hello, she only spoke to me to say I had to pay for one bag, and the overweight price, I tried to explain I purchased a different fare, but she didn’t care she just kept repeating the same. Ground crew was horrible and the complete procedure is horrible, I’ve never had such experience with JetBlue. To improve you should start putting kiosks, and mobile check-in URGENTLY please"

Boarding process was chaotic and disorganized. The plane needs updating in the interior. Things are broken, worn out, and dated

My luggage did not get to my Miami destination/home. I am waiting for it 24 hours later.

The only comment I have is why do you sell snacks on board? They should be free. When we take domestic flights here in US, our snacks are free. Also, please communicate with me in English. I received so many emails way before my flight that were in Spanish that I had to ask my son to interpret for me. You should be WELL AWARE if the customers you are communicating speak the language, it does mean that we speak and understand Spanish because we are traveling to Spain, NOT NECESSARILY! Thank you!

Service and food are good. However, main cabin with the extra cost one pays could be better. I don't see any difference with the rest of the seats in the regular category. The seats are too close to the ones in front. For short flights it is Ok, but for long ones there should be more space.

As with every airline the seats are not built for tall people.

Fast check in, easy to navigate, crew were very good, the plane was delayed due to a previous flight and I found the cleanliness a little lacking but overall it was fine

I would not fly with BA again. Packed in like sardines, constant request to turn down air conditioning due to freezing cold for hours and the food was pretty to look at but tasteless!

Pros: they tried to accommodate bc they forgot my gluten free meal Negatives: The flight was freeeeeezing Iberia didn’t communicate my gluten free meal

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

I called prior to flying to confirm our baggage allowance which was 5 bags. On our outbound flight thee were no problems. On the return flight we were charged for each bag totaling $400! We are working with customer service to resolve the issue.

Air hostess delayed providing food and then pulled away the tray before i finished eating

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The flight was on time and the crew very professional. Everything went as expected and I will use BA again for this trip.

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Very bad plain although I paid A business class ticket I was stuck in a stiff fixed seat without any entertainment or Wi Fi for 5 hours I will never ever book a flight on British airline.

Self check in Kiosk did not recognize that I had prepaid for my luggage. This caused a 40 minute delay even though I had my British Airways email receipt for the prepaid luggage.

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

Staff were very helpful. The free WiFi for messages was also very useful to keep in touch

Crew was more interested on looking at their phones than welcoming passengers during boarding.

The crew was very attentive and kept busy serving a variety of treats!

Book cheap flights from London to San Juan

Cheapest flights to San Juan from London found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to San Juan found on KAYAK in the last 72 hours.
16/5Thu
3 stops
49h 45mLGW-SJU
£242
16/5Thu
2 stops
20h 25mSTN-SJU
£257
16/5Thu
2 stops
23h 10mLHR-SJU
£277
4/6Tue
2 stopsTAP AIR PORTUGAL
26h 59mLGW-SJU
£525
4/6Tue
2 stopsTAP AIR PORTUGAL
22h 55mLHR-SJU
£528
16/5Thu
1 stopAvianca
18h 40mLHR-SJU
£560
4/6Tue
1 stopJetBlue
14h 02mLHR-SJU
£572
15/7Mon
1 stopJetBlue
16h 20mLHR-SJU
£664
30/7Tue
1 stopAvianca
23h 35mLHR-SJU
£1,010
15/7Mon
2 stopsAer Lingus
21h 14mLCY-SJU
£1,125

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