Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

LON - SJU

Find cheap flights from London to San Juan from £189

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 30/4. 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 19/5
Sun 26/5

Search hundreds of travel sites at once for deals on flights 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.
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 44,212,662 times on KAYAK, and here's why:

Save 28% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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 - 03:09LGW-SJU
22h 09m1 stop
08:50 - 07:00SJU-LGW
17h 10m1 stop
Mon, 24 Jun - Sat, 29 Jun
10:30 - 01:31LGW-SJU
20h 01m1 stop
10:30 - 06:35SJU-LGW
15h 05m1 stop
£475JetBlue
Find Deal
Tue, 17 Sep - Wed, 2 Oct
08:20 - 20:11LHR-SJU
16h 51m2 stops
15:54 - 12:10SJU-LHR
15h 16m1 stop
£596Finnair
Find Deal
Fri, 20 Sep - Tue, 1 Oct
08:20 - 20:11LHR-SJU
16h 51m2 stops
15:54 - 09:05SJU-LHR
12h 11m1 stop
£607Finnair
Find Deal
Fri, 20 Sep - Mon, 30 Sep
10:50 - 18:20LHR-SJU
12h 30m1 stop
17:32 - 10:50SJU-LHR
12h 18m1 stop
£922British Airways
Find Deal
Tue, 17 Sep - Fri, 4 Oct
10:50 - 18:20LHR-SJU
12h 30m1 stop
17:32 - 10:50SJU-LHR
12h 18m1 stop
£951British Airways
Find Deal
Sat, 21 Sep - Sat, 28 Sep
08:30 - 23:57LHR-SJU
20h 27m2 stops
07:00 - 05:55SJU-LHR
17h 55m2 stops
£970Lufthansa
Find Deal
Thu, 19 Sep - Sun, 29 Sep
20:40 - 21:00LGW-SJU
29h 20m2 stops
20:20 - 20:00SJU-LGW
18h 40m1 stop
£1,037Iberia
Find Deal
Fri, 10 May - Sat, 18 May
13:00 - 23:57LHR-SJU
15h 57m1 stop
01:05 - 07:10SJU-LHR
25h 05m1 stop
£1,050Lufthansa
Find Deal
Wed, 22 May - Fri, 31 May
10:50 - 18:20LGW-SJU
12h 30m1 stop
20:20 - 20:00SJU-LGW
18h 40m1 stop
£1,067Iberia
Find Deal
Wed, 10 Jul - Thu, 25 Jul

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 £540 on average. On the other hand, the most expensive months are August and December, where the average cost of tickets is £842 and £823 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 (£529) and Avianca (£535). The cheapest round-trip tickets were found on JetBlue (£475) and Finnair (£596).

Good to know - Cheap tickets from London to San Juan

Low season

September

High season

March

Cheapest flight

£189
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 £235 for a one-way ticket and £547 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, oneworld, and SkyTeam 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 JetBlue?

    The two airlines most popular with KAYAK users for flights from London to San Juan are Finnair and JetBlue. With an average price for the route of £579 and an overall rating of 7.7, Finnair is the most popular choice. JetBlue is also a great choice for the route, with an average price of £466 and an overall rating of 7.6.

  • 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 1390 reviews
7.0entertainment
6.9food
7.6comfort
7.8boarding
8.2crew
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2024LHR - SFO
Read more about Finnair reviews

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

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.

Very rude hostess. She embarrassed me in front of others. I went to sit after taking off in a different sit in the same economic cabin. Was the area where doors are. She come to me very laud and said: go back to your sit those sit are more expensive.wow! No diplomacy. Flight was super full except 3 of those sit. The only person in that row later during the flight occupied all sit laying down!. Once more disappointed at American Airlines. Early flight they lost my luggages for 4 days. Never refund money for replacement for some of essential items purchased..when I booked the flight I thought was Finlandair. I

The crew was very good, excellent, they help me with my needs.! Food was not that good.

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

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"
Pros: "Good entertainment options, the flight tracking and personal screen great. There was good space between passengers and mask wearing was enforced."
Cons: "Hand out wipes to self clean arm rests and tray tables."

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.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

I can’t comment on food as it was necessary to buy it. No entertainment.

Everything was fantastic except the Iberia website and app… they left a lot of questions and induced much stress. But once on the plane, all was awesome.

I needed assistance and the staff at the airport and crew were very helpful and polite

I liked that the seat belt fit so I did not have to ask for an extension.

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!

Terrible. Missed my flight to final destination because of delayed British Airways flight. Had to spend 12 hours in airport and $1500 for new plane tickets

The crew on board were all very pleasant and happy to help. The flight had the old business class seats. The departure board in the business lounge did not update and kept on saying ' gate open' but never said boarding. When I got nervous about the departure time and walked to the gate I was told off rudely for being late.

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

The boarding process was a disaster. No one respects the boarding groups—tired old aeroplane. There are no sockets to charge phones. The cushion seats are ancient and hurts back and gluts

Check in process was unfamiliar. While receiving assistance the employees supervisor berated him for not walking the area. Lucky for us, he ignored her and helped us check in. Did not know about the baggage fees with economy basic and spent 450 GBP (nearly$600) just on bags for a total of less than 2 hours flying time (50 minutes one way) on a round trip lasting less than 3 days. Customers check their own bags at kiosk and place on conveyor themselves. No reason for such an high cost of checking bags when customers do half the work. Some destinations it’s unavoidable, but will definitely seek other airlines before British Airways for future travel. Astronomically high price for bags. Our first experience flying British Airways and very, very disappointed. Completely overpriced for the services we received.

Check in process was unfamiliar. While receiving assistance the employees supervisor berated him for not walking the area. Lucky for us, he ignored her and helped us check in. Did not know about the baggage fees with economy basic and spent 450 GBP (nearly$600) just on bags for a total of less than 2 hours flying time (50 minutes one way) on a round trip lasting less than 3 days. Astronomically high price for bags. Our first experience flying British Airways and very disappointed. Completely overpriced for the service we received.

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

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.
30/4Tue
1 stop
14h 51mLGW-SJU
£189
4/6Tue
1 stop
27h 10mLGW-SJU
£207
24/5Fri
1 stop
20h 25mLGW-SJU
£209
30/4Tue
2 stops
30h 39mLGW-SJU
£216
4/6Tue
2 stopsTAP AIR PORTUGAL
20h 41mLHR-SJU
£529
13/9Fri
1 stopAvianca
18h 40mLHR-SJU
£535
30/4Tue
1 stopAvianca
23h 35mLHR-SJU
£568
13/9Fri
2 stopsTAP AIR PORTUGAL
30h 54mLHR-SJU
£591
13/8Tue
1 stopJetBlue
16h 04mLHR-SJU
£665
19/5Sun
2 stopsAer Lingus
29h 00mLCY-SJU
£1,025

Search by stops

Search by airline

Search by price

Last minute flights from London to San Juan

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to San Juan that are departing in the next 10 days.
22/4Mon
multi-stopFinnair
26h 20mLHR-SJU
29/4Mon
multi-stopFinnair
14h 00mSJU-LHR
£558
22/4Mon
multi-stop
27h 34mLGW-SJU
29/4Mon
multi-stop
32h 49mSJU-LGW
£580
22/4Mon
multi-stop
33h 38mLGW-SJU
29/4Mon
multi-stop
16h 26mSJU-LGW
£616
22/4Mon
multi-stopIcelandair
30h 40mLGW-SJU
29/4Mon
multi-stopIcelandair
29h 25mSJU-LGW
£719
22/4Mon
multi-stopIcelandair
29h 15mLHR-SJU
29/4Mon
multi-stopIcelandair
29h 05mSJU-LHR
£747
22/4Mon
multi-stopTAP AIR PORTUGAL
22h 19mLGW-SJU
29/4Mon
multi-stopTAP AIR PORTUGAL
19h 32mSJU-LGW
£1,244
23/4Tue
multi-stopJetBlue
17h 23mLGW-SJU
25/4Thu
multi-stopJetBlue
12h 49mSJU-LGW
£1,265
22/4Mon
multi-stopJetBlue
15h 48mLHR-SJU
23/4Tue
multi-stopJetBlue
12h 11mSJU-LHR
£1,293
23/4Tue
multi-stopTAP AIR PORTUGAL
40h 29mLGW-SJU
25/4Thu
multi-stopTAP AIR PORTUGAL
39h 53mSJU-LGW
£1,378
22/4Mon
multi-stopAir Canada
26h 56mLHR-SJU
28/4Sun
multi-stopAir Canada
24h 25mSJU-LHR
£1,407

Search by stops

Search by airline

Search by price