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SJU - LHR

$429 Find cheap flights from San Juan 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 from San Juan to London departing on 9/27. 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
Mon 6/3
Mon 6/10

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to London.
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan 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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:00 pm - 8:45 pmSJU-LHR
19h 45m1 stop
6:25 am - 10:25 pmLHR-SJU
20h 00m1 stop
$671JetBlue
Find Deal
Tue, Oct 22 - Tue, Oct 29
8:00 pm - 8:45 pmSJU-LHR
19h 45m1 stop
11:20 am - 10:25 pmLHR-SJU
15h 05m1 stop
$677JetBlue
Find Deal
Fri, Oct 18 - Sat, Nov 2
4:03 pm - 9:25 amSJU-LHR
12h 22m1 stop
9:15 am - 6:20 pmLHR-SJU
14h 05m1 stop
$693British Airways
Find Deal
Wed, Sep 11 - Tue, Sep 24
3:54 pm - 11:15 amSJU-LHR
14h 21m2 stops
6:15 am - 6:20 pmLHR-SJU
17h 05m1 stop
$696American Airlines
Find Deal
Wed, Sep 11 - Tue, Sep 24
3:54 pm - 11:40 amSJU-LHR
14h 46m2 stops
8:50 am - 12:22 amLHR-SJU
20h 32m2 stops
$701American Airlines
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Wed, Sep 11 - Tue, Sep 24
8:00 am - 8:05 amSJU-LHR
19h 05m1 stop
7:45 pm - 6:09 pmLHR-SJU
26h 24m2 stops
$826Air France
Find Deal
Fri, Oct 18 - Mon, Nov 4
2:25 pm - 1:15 pmSJU-LHR
17h 50m1 stop
7:45 pm - 6:09 pmLHR-SJU
26h 24m2 stops
$827Air France
Find Deal
Fri, Oct 18 - Mon, Nov 4
1:37 pm - 9:25 amSJU-LHR
14h 48m1 stop
12:30 pm - 9:20 pmLHR-SJU
13h 50m1 stop
$848British Airways
Find Deal
Sun, Jul 21 - Fri, Aug 9
5:07 pm - 1:15 pmSJU-LHR
15h 08m1 stop
11:35 am - 10:09 pmLHR-SJU
15h 34m1 stop
$860Delta
Find Deal
Mon, Jul 22 - Thu, Aug 8
8:00 am - 6:45 amSJU-LHR
17h 45m1 stop
11:35 am - 10:09 pmLHR-SJU
15h 34m1 stop
$910Delta
Find Deal
Thu, Jul 25 - Tue, Aug 13

Flights from San Juan to London - Travel Insights & Trends

Get data-powered insights and trends into flights from San Juan to London 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 San Juan to London?

The average price of all flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to London on a Monday and more expensive on a Saturday. On your return trip to San Juan, you should consider flying back on a Sunday, and avoid Tuesdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport is February, where tickets cost $672 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,284 and $1,162 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 33 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from San Juan to London found on KAYAK was with JetBlue for $429. JetBlue proposed a round-trip connection from $671 and British Airways from $693.

Good to know

Low season

January

High season

November

Cheapest flight

$429
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from San Juan to London

When to book flights from San Juan to London

Are your dates flexible? Find out the best times to travel from San Juan to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 San Juan to London flights

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

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport was $429 for a one-way ticket and $671 for a round-trip.

  • Do I need a passport to fly between San Juan and London?

    Yes

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

    San Juan and London are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at London Heathrow.

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

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

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

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

  • Which is the best airline for flights from San Juan to London, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from San Juan to London are Delta and KLM. With an average price for the route of $874 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $682 and an overall rating of 7.8.

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

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

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

  • What is the Hacker Fare option on flights from San Juan 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 to San Juan with another airline. Booking your flights between San Juan and LHR can sometimes prove cheaper using this method.

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

 
See real verified KAYAK customer reviews for airlines flying from San Juan to London. 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 San Juan 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.
8.0
DeltaOverall score based on 10838 reviews
7.4Food
8.2Boarding
8.0Entertainment
8.6Crew
7.9Comfort
Airline reviews

The flight was excellent, I recommend people to fly with Delta

10.0 ExcellentLionel, May 2024SJU - JFK
Read more about Delta reviews

The flight was excellent, I recommend people to fly with Delta

Bathroom broke, had to rush to board because of late exit of previous flight

Lost luggage! No representative of the airline present at the airport. Air France contracted the service out to a 3rd party service. The service has no ability to track the missing bag or provide a time frame on its arrival.

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Trump was still the flight attendants very professional funny you felt right at home

No vegetarian food was there even I have specially mentioned at the time of booking

When we enter the airplane there were many water drops falling from the ceiling all the way long to the seat , and when it departs were even more over us getting the hair wet , and later on was too hot , the A/C not work well.

The crew members were great. The food was good. Entertainment was average - Could use a wider and better selections of movies and series.

Flight was cancelled after 3 1/2 hours. Support for rebooking was overwhelmed. Lost first class tickets and to fly economy.

I trust Delta. I travel comfortable. The snacks could improve or could go to something as a little sandwich.

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 .

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

The delay was an issue. Other than that. Every thing good

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

After 14 hour delaybwith departure time changed 9 times then announcing the flight was canceled. Another later announcement said the cancelation was in error. Also after paying a higher fare to leave in the afternoon then departing at 4am was not right.

I cannot say this enough, I NEVER BOARDED OR HAVE HAD ANY TRAVEL IN THE PAST YEAR. However your app says ive been traveling a lot lately. GET REAL HUMANS TO GIVE CUSTOMER SUPPORT.

late lack information taney changed my sit even after i had checked i. a day prior and had been at airport checked in for 5 hrs. i have medical condition that i need to sit in aisle but changes to window. only apparent at boarding and they had no explanation why they changed my boarding pass and had no other seats. very bizarre, uncaring and disrespectful. Made my trip very challenging I should sue you. will NEVEr fly JB again. Ever. Would have blasted in social media but did not want to disclose my medical disability.

The plane smelled bad, the temperature in the plane was over 75 with times over 80. Jet blue tried to mask the smell of armpits married with butt. Overall mediocre. Crew was nice

Our actual Flight was great & smooth but it was delayed for 4 hours and Jetblue weren't able to accommodate us in the earlier flight. That was Awful. I lost work/clients because of this delay

We were charged twice for checked bags and one never arrived at our destination. The flight was delayed 90 minutes with no explanation given.

Theres several thing i will like to mention and please share this feedback with JetBlue. I was concerned that the food options were limited. Theres no vegetarian options on the sandwiches that they offer on board. Vegetarian options are limited to only cheese and crackers,. Specially on mid day flights there should be more options offered to people. Second comment is that during the flight I watched TWO movies without audio, I tried a few ear sets to listen and none of them worked. Its a shame that they were good movies however no audio. Maybe updating the auxiliary cable and making Bluetooth connections on media will be great. Finally, the bathroom on the plane looked like they needed an update, being remodeled or changed. They look dirty however they are not. Maybe changing, replacing some pieces and updating the air filters will be great. This is not an aesthetic recommendation however a necessary one.

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

Realize ahead of a 6:30 am flight that you have a completely flat tire that needs replacement. They should have never boarded everyone. They kept us at the gate with the door closed for ALMOST but not quite 3 hours. The plane had been sitting there from the night before. At the 2 hour mark of sitting there, they came through with a bottle of water and cups. Never offered snacks. Never offered a real apology. People missed connecting flights completely. Absolutely no apology. Just yep you are going to miss your connection completely. I don’t know if you can get to your destination today. The new boy time there was a seemingly heartfelt apology was when they said they were sorry and then fifer everyone an opportunity for a credit card. It was so poor. Lucky for us, our funeral was not the same day as our flight or we would have missed it. All for an avoidable repair that could have been done before we even set foot on the plane.

No entertainment, no WiFi, not great seats. Crew was good.

Terrible boarding , Business class seats are sub standard. As usual crew will miss your food too

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

The return trip was a customer service disaster. American Airlines needs an overhaul of how they treat their customers.

Seats in coach aren't padded enough for a 6 hour flight

Was flying in premium eco and there were around 5-6 movies I wanted to watch and none of those could I play for some reasons. Not just me we checked w the person sitting next to me. Few of the movies were only playable :( Also that was not great that we couldn't upgrade to business however tried to, many times before the flight :(

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

This was not the BA business class it used to be. Mediocre food, attendants seemed stretched thin. All the little luxuries that used to make BA business fun were missing. Flight delayed and the explanation given was they forgot to pick up crew - I hope I misheard! Transfer in LHR “sticky” - we thought we had way too much time at 3hours but it was needed. Next time will try different route.

Always getting updates by email very easy to check in on line. There was plenty of checking in staff to get you all through. It was nice that the flight attendants took time to talk to you and were interested in your holiday.

Flight from Phoenix to London was very quiet. Excellent space available for comfort, couldn't fault

Food was very average. And top up drinks offer was absent. For a 11 hour long flight that should be the minimum. The crew didn't want to be there. I understand it was new year day but given they had signed up for it

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

They allowed some guy to move seats after 3hours of him being next to someone very sick, There were several empty seats, but they moved him to mine. I find that incredibly inconsiderate and should not have been done.

Excellent. Very nice and comfortable business class. Only negative is that it was difficult to hear the pilot’s announcement.

Food not so good. Need more veggies and whole grain especially the late food. Couldn’t figure out how to use the entertainment system.

Check in was horrendous! Economy took 2 hours before seeing an agent. Business class was 0.5 - 1 hour.

The first class flight itself was first class, however getting to the airport and getting through the airport was agony. The BA flight sat on the taxiway for ages and caused us to miss our connecting flight which meant half a day lost. Our return flight on BA was cancelled so a dawn flight was made and we lost another half day. Goodby BA

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

There was some delay at Heathrow where a machine needed to "start the engines" wasn't available and they couldn't even find the team tasked to do it. Unacceptable. Caused about an hour delay and seemed unnecessary. Also saw several passengers abusing the overhead luggage situation, having too many large bags and not leaving enough space for others. The crew was good and the refreshments were good in quality and quantity.

They cancelled our ticket, gave us no warning, they reissued it 4 days prior to trip and it was cancelled again when we got to the airport- very stressful, the flight was overbooked so they drove us across Milan to malpensa

Book cheap flights from San Juan to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Juan to London found on KAYAK in the last 72 hours.
9/27Fri
1 stopJetBlue
12h 30mSJU-LHR
$429
7/14Sun
1 stopJetBlue
19h 00mSJU-LHR
$445
10/5Sat
1 stopJetBlue
15h 00mSJU-LHR
$464
7/14Sun
1 stopKLM
15h 45mSJU-LHR
$558
7/13Sat
1 stopDelta
21h 10mSJU-LHR
$562
7/13Sat
1 stopUnited Airlines
14h 35mSJU-LHR
$582
10/5Sat
2 stopsAmerican Airlines
22h 51mSJU-LHR
$589
7/18Thu
1 stopKLM
15h 08mSJU-LHR
$608
7/12Fri
2 stopsDelta
18h 00mSJU-LHR
$612
7/11Thu
1 stopUnited Airlines
14h 35mSJU-LHR
$632

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Last minute flights from San Juan to London

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 San Juan to London that are departing in the next 10 days.
5/6Mon
multi-stopJetBlue
20h 42mSJU-LHR
5/10Fri
multi-stopJetBlue
19h 37mLHR-SJU
$852
5/7Tue
multi-stop
34h 35mSJU-LHR
5/17Fri
multi-stop
18h 30mLHR-SJU
$1,019
5/5Sun
multi-stopJetBlue
19h 28mSJU-LHR
5/11Sat
multi-stopJetBlue
20h 25mLHR-SJU
$1,047
5/7Tue
multi-stop
24h 55mSJU-LHR
5/17Fri
multi-stop
18h 30mLHR-SJU
$1,066
5/7Tue
multi-stop
34h 35mSJU-LHR
5/17Fri
multi-stop
39h 56mLHR-SJU
$1,069
5/7Tue
multi-stopAmerican Airlines
18h 30mSJU-LHR
5/17Fri
multi-stopAmerican Airlines
17h 35mLHR-SJU
$1,127
5/6Mon
multi-stopAir Canada
24h 25mSJU-LHR
5/17Fri
multi-stopAir Canada
20h 27mLHR-SJU
$1,176
5/6Mon
multi-stopUnited Airlines
14h 35mSJU-LHR
5/17Fri
multi-stopUnited Airlines
22h 07mLHR-SJU
$1,262
5/6Mon
multi-stopUnited Airlines
14h 35mSJU-LHR
5/17Fri
multi-stopUnited Airlines
20h 50mLHR-SJU
$1,270
5/5Sun
multi-stop
24h 29mSJU-LHR
5/11Sat
multi-stop
30h 00mLHR-SJU
$1,759

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San Juan - London Flights

Departure:

San Juan (SJU)Puerto Rico

Destination:

London (LHR)United Kingdom

Return flight deals:

London - San Juan

Cabin classes:

Browse destinations:

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