LHR - SJU

$461 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 11/24. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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

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Everything you should know

Cheapest round-trip
$725
Typical prices: $932-$1,364
Multiple Airlines
Sun 12/13Tue 1/19
LHR - SJU • 1 stop
Cheapest one-way
$461
Typical prices: $553-$727
Multiple Airlines
Tue 11/24
LHR - SJU • 1 stop
Top airlines
Cheapest • from $791 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between London and San Juan. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $932 (round-trip)
Shortest trip • 15h 22m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 19% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to San Juan

Sun, Dec 13 - Tue, Jan 19
Multiple Airlines Logo
10:45 am - 4:40 pm
LHR
-
SJU
33h 55m
1 stop
Multiple Airlines Logo
9:35 pm - 2:55 pm
SJU
-
LHR
13h 20m
1 stop
$725Multiple Airlines
Mon, Dec 14 - Tue, Jan 19
Multiple Airlines Logo
9:15 am - 8:00 pm
LHR
-
SJU
14h 45m
1 stop
Multiple Airlines Logo
9:35 pm - 2:55 pm
SJU
-
LHR
13h 20m
1 stop
$729Multiple Airlines
Wed, Nov 4 - Sun, Nov 15
Multiple Airlines Logo
9:15 am - 8:00 pm
LHR
-
SJU
14h 45m
1 stop
Multiple Airlines Logo
9:35 pm - 2:55 pm
SJU
-
LHR
13h 20m
1 stop
$738Multiple Airlines
Wed, Nov 11 - Tue, Nov 24
JetBlue Logo
9:20 am - 12:25 am
LHR
-
SJU
19h 05m
1 stop
JetBlue Logo
5:30 am - 9:40 pm
SJU
-
LHR
12h 10m
1 stop
$791JetBlue
Wed, Nov 11 - Tue, Nov 24
JetBlue Logo
9:20 am - 12:25 am
LHR
-
SJU
19h 05m
1 stop
JetBlue Logo
5:30 am - 9:40 pm
SJU
-
LHR
12h 10m
1 stop
$793JetBlue
Tue, Nov 3 - Tue, Nov 10
JetBlue Logo
12:20 pm - 1:43 am
LHR
-
SJU
17h 23m
1 stop
JetBlue Logo
11:45 am - 9:30 am
SJU
-
LHR
17h 45m
1 stop
$811JetBlue
Wed, Nov 4 - Thu, Nov 5
JetBlue Logo
9:20 am - 12:25 am
LHR
-
SJU
19h 05m
1 stop
JetBlue Logo
7:00 am - 6:55 am
SJU
-
LHR
19h 55m
1 stop
$822JetBlue
Tue, Nov 3 - Thu, Nov 5
JetBlue Logo
12:20 pm - 1:43 am
LHR
-
SJU
17h 23m
1 stop
JetBlue Logo
7:00 am - 6:55 am
SJU
-
LHR
19h 55m
1 stop
$827JetBlue
Tue, Nov 3 - Mon, Nov 9
JetBlue Logo
12:20 pm - 1:43 am
LHR
-
SJU
17h 23m
1 stop
JetBlue Logo
7:00 am - 6:55 am
SJU
-
LHR
19h 55m
1 stop
$837JetBlue
Mon, Nov 2 - Thu, Nov 5
JetBlue Logo
7:25 am - 8:45 pm
LHR
-
SJU
17h 20m
1 stop
JetBlue Logo
7:00 am - 6:55 am
SJU
-
LHR
19h 55m
1 stop
$838JetBlue
Booking Insights

KAYAK's insights & trends for London to San Juan flights

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.

How much is a round-trip flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport departing in December.

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 round-trip 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 February, where tickets cost $760 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,328 and $1,168 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.

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 4 weeks before departure, which saves you about 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$461
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly with an average 42% increase in price.
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 5 days, the lowest price for a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport was $461 for a one-way ticket and $725 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.

  • 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.

Reviews of the 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.
7.1
JetBlueOverall score based on 2984 reviews
7.9Crew
7.2Entertainment
6.6Food
7.3Boarding
7.5Comfort
Airline reviews

What a great flight. Seats were more comfortable than other airlines. Flight was full but very easy to navigate. No stress no drama

10.0 ExcellentMelesia, May 2026
BOS - JAX
Read more JetBlue reviews

What a great flight. Seats were more comfortable than other airlines. Flight was full but very easy to navigate. No stress no drama

All airline travel outside of First or Business class is an ordeal to be endured. This trip was ok, small o, small k.

Jetblue provided a very good service during the flight, the plane in a very good condition, the crew is professional, everything was on time. That's it!

Given us a free miles or free flight for waiting for 9 hours I didn’t get home till 5am in the morning and I was supposed to be home at 9:30 touch down.

The comfortability was very good. Except, when entering the craft the the first steward never greeted us upon entering the airplane. He spoke too fast where his words were all jumbled and difficult to understand.

Purchased through 3rd party vendor which made everything difficult. Unable to check in online. Unable to get flight updates easily, tsa precheck information didn’t carry through, longer time to check in in person. Entertainment looked good but had to purchase conventional headphones to view.

It was a great flight got here on time wish they would give headphones out for free

I was denied a plastic fork to eat my food and was told plastic forks are for paying customers who buy Jet Blue’s food. So I had to make a utensil out of a cup so nourish my body. Like a refugee. Because decency is dead.

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

Well, its a hit or miss when boarding most of the time your employees just let everyone enter immediately In one bum rush. Then out of know where tell the passengers only let A can enter then b then c etc. So make a decision and stick to it. Do it by alphabet and have famn strick compliance. Let the public know. That makes easier on passengers.

Everything you need to know for your flight from London to San Juan

Information on your arrival and departure airports