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LHR - SJU

$586 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 7/1. 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
Tue 6/4
Tue 6/11

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

Save 22% or moreCompare multiple travel sites with one search.

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

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Cheap flight deals from London to San Juan (LHR-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
7:25 am - 4:17 pmLHR-SJU
13h 52m1 stop
8:00 pm - 8:45 pmSJU-LHR
19h 45m1 stop
$673JetBlue
Find Deal
Mon, Sep 16 - Sun, Sep 29
7:25 am - 3:55 pmLHR-SJU
13h 30m1 stop
6:02 am - 6:30 amSJU-LHR
19h 28m1 stop
$678JetBlue
Find Deal
Mon, Jun 3 - Mon, Jun 10
11:20 am - 9:54 amLHR-SJU
27h 34m2 stops
9:55 am - 3:35 pmSJU-LHR
24h 40m2 stops
$809TAP AIR PORTUGAL
Find Deal
Thu, Oct 3 - Sat, Oct 5
6:00 am - 8:55 amLHR-SJU
31h 55m2 stops
10:30 am - 10:00 pmSJU-LHR
30h 30m2 stops
$834TAP AIR PORTUGAL
Find Deal
Fri, Oct 11 - Sun, Oct 13
8:30 pm - 3:05 amLHR-SJU
35h 35m3 stops
3:15 am - 2:35 pmSJU-LHR
30h 20m3 stops
Fri, May 24 - Sun, May 26
8:30 pm - 3:30 amLHR-SJU
36h 00m2 stops
3:15 am - 2:35 pmSJU-LHR
30h 20m3 stops
Fri, May 24 - Sun, May 26
1:00 pm - 11:57 pmLHR-SJU
15h 57m1 stop
1:05 am - 8:40 pmSJU-LHR
14h 35m1 stop
$1,130United Airlines
Find Deal
Tue, Jul 9 - Mon, Jul 22
1:00 pm - 11:57 pmLHR-SJU
15h 57m1 stop
1:30 pm - 10:40 amSJU-LHR
16h 10m2 stops
$1,134United Airlines
Find Deal
Tue, Jul 9 - Tue, Jul 23
12:30 pm - 11:15 pmLHR-SJU
15h 45m1 stop
4:12 pm - 11:05 amSJU-LHR
13h 53m1 stop
$1,145British Airways
Find Deal
Mon, Jul 8 - Tue, Jul 16
12:30 pm - 11:20 pmLHR-SJU
15h 50m1 stop
4:12 pm - 11:05 amSJU-LHR
13h 53m1 stop
$1,183British Airways
Find Deal
Thu, Jul 4 - Mon, Jul 15

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 Heathrow Airport to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from London to San Juan, you should consider leaving on a Sunday and avoid Tuesdays if you are looking for the best rates. For your return to London, you’ll find the best rates on Mondays and the most expensive ones on Saturdays.

What is the cheapest month to fly from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport to San Juan Luis Munoz Marin Intl Airport is January, where tickets cost $639 on average. On the other hand, the most expensive months are August and July, where the average cost of tickets is $1,076 and $973 respectively.

How far in advance should I book a flight from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport to San Juan Luis Munoz Marin Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 52 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.
In the past 3 days, the cheapest one-way tickets to San Juan from London were found on JetBlue ($736) and United Airlines ($1,762), and the lowest round-trip tickets were found on JetBlue ($673) and TAP AIR PORTUGAL ($809).

Good to know

Low season

July

High season

February

Cheapest flight

$586
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from London 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 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 London to San Juan flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport was $586 for a one-way ticket and $673 for a round-trip.

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

    Yes

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

    When flying out of London you will be using London Heathrow. You will be landing at San Juan, also known as San Juan Luis Munoz Marin Intl.

  • 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.

  • 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 travelers 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 round-trip ticket. You could then fly to San Juan with an airline and back to London with another airline. Booking your flights between London and SJU 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 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 airline flying 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.
7.6
JetBlueOverall score based on 4545 reviews
7.8Boarding
8.3Crew
7.5Entertainment
7.9Comfort
7.2Food
Airline reviews

Crew was just ok. Flight was packed. On a 3/4 hour flight I would hope they would come around more than once to see if you needed anything further. Not very attentive.

6.0 GoodJulie, Apr 2024PLS - JFK
Read more about JetBlue reviews

Crew was just ok. Flight was packed. On a 3/4 hour flight I would hope they would come around more than once to see if you needed anything further. Not very attentive.

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 !!!!

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.

The free wi-fi was great. But, the flight delay was not sustainable. It definitely impacted people schedules and JetBlue didn’t do anything to compensate clients for it

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.

Great crew. Smooth flight that was on time. Boarding is a disaster as usual. Bought more room seat and was Grouo A. The flight was packed by the time I got on. TVs did not work as usual

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.

Book cheap flights from London to San Juan

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.
7/1Mon
2 stops
39h 29mLHR-SJU
$586
7/1Mon
3 stops
26h 11mLHR-SJU
$638
6/19Wed
1 stopJetBlue
20h 02mLHR-SJU
$736
6/20Thu
1 stopJetBlue
16h 05mLHR-SJU
$773
7/1Mon
1 stop
21h 38mLHR-SJU
$812
9/14Sat
2 stopsUnited Airlines
22h 07mLHR-SJU
$1,762
9/8Sun
2 stopsLufthansa
19h 27mLHR-SJU
$1,763

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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.
5/7Tue
multi-stopJetBlue
17h 05mLHR-SJU
5/14Tue
multi-stopJetBlue
14h 32mSJU-LHR
$821
5/9Thu
multi-stopJetBlue
17h 05mLHR-SJU
5/13Mon
multi-stopJetBlue
19h 28mSJU-LHR
$859
5/6Mon
multi-stopJetBlue
13h 30mLHR-SJU
5/13Mon
multi-stopJetBlue
19h 28mSJU-LHR
$878
5/7Tue
multi-stopTAP AIR PORTUGAL
23h 32mLHR-SJU
5/11Sat
multi-stopTAP AIR PORTUGAL
18h 22mSJU-LHR
$1,234
5/8Wed
multi-stopTAP AIR PORTUGAL
20h 12mLHR-SJU
5/14Tue
multi-stopTAP AIR PORTUGAL
18h 22mSJU-LHR
$1,335
5/6Mon
multi-stopLufthansa
19h 27mLHR-SJU
5/14Tue
multi-stopLufthansa
17h 55mSJU-LHR
$1,545
5/7Tue
multi-stopBritish Airways
19h 45mLHR-SJU
5/14Tue
multi-stopBritish Airways
12h 20mSJU-LHR
$1,557
5/5Sun
multi-stopLufthansa
19h 27mLHR-SJU
5/14Tue
multi-stopLufthansa
17h 55mSJU-LHR
$1,583
5/7Tue
multi-stopBritish Airways
19h 45mLHR-SJU
5/12Sun
multi-stopBritish Airways
14h 46mSJU-LHR
$1,595
5/7Tue
multi-stopKLM
17h 15mLHR-SJU
5/12Sun
multi-stopKLM
14h 15mSJU-LHR
$1,612

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London - San Juan Flights

Departure:

London (LHR)United Kingdom

Destination:

San Juan (SJU)Puerto Rico

Return flight deals:

San Juan - London

Cabin classes:

Browse origins:

  • Flights » 
  • London Heathrow Airport

Browse destinations:

  • Flights » 
  • Worldwide » 
  • San Juan Airport