SJU - LHR

£199 Find Cheap Flights from San Juan to London Heathrow Airport

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 Heathrow departing on 5/10. 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 London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to London, 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 San Juan to London, as well as popular online travel agencies
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£486
Typical prices: £552-£434
Virgin Atlantic
Fri 16/10Sat 31/10
SJU - LHR • 1 stop
Cheapest one-way flight
£199
Typical prices: £261-£330
Virgin Atlantic
Mon 5/10
SJU - LHR • 1 stop
Top airlines
Cheapest • from £486 (return)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between San Juan and Heathrow. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £620 (return)
Shortest trip • 13h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% 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 hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Juan to Heathrow (SJU-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Juan to Heathrow 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 return flight deals from San Juan to Heathrow

Fri, 16 Oct - Sat, 31 Oct
Virgin Atlantic Logo
07:00 - 06:20
SJU
-
LHR
18h 20m
1 stop
Virgin Atlantic Logo
06:20 - 21:59
LHR
-
SJU
19h 39m
2 stops
£486Virgin Atlantic
Fri, 16 Oct - Sat, 31 Oct
Virgin Atlantic Logo
13:06 - 06:45
SJU
-
LHR
12h 39m
1 stop
Virgin Atlantic Logo
08:55 - 21:59
LHR
-
SJU
17h 04m
1 stop
£491Virgin Atlantic
Fri, 16 Oct - Sat, 31 Oct
Virgin Atlantic Logo
13:06 - 10:20
SJU
-
LHR
16h 14m
1 stop
Virgin Atlantic Logo
08:55 - 21:59
LHR
-
SJU
17h 04m
1 stop
£491Virgin Atlantic
Sun, 20 Sep - Tue, 22 Sep
United Airlines Logo
13:25 - 07:15
SJU
-
LHR
12h 50m
1 stop
United Airlines Logo
06:50 - 23:50
LHR
-
SJU
22h 00m
2 stops
£513United Airlines
Sat, 19 Sep - Tue, 22 Sep
United Airlines Logo
01:00 - 06:55
SJU
-
LHR
24h 55m
2 stops
United Airlines Logo
06:50 - 23:50
LHR
-
SJU
22h 00m
2 stops
£517United Airlines
Tue, 22 Sep - Thu, 24 Sep
United Airlines Logo
07:00 - 07:55
SJU
-
LHR
19h 55m
1 stop
United Airlines Logo
07:30 - 23:50
LHR
-
SJU
21h 20m
2 stops
£522United Airlines
Sat, 23 May - Fri, 21 Aug
Virgin Atlantic Logo
13:16 - 06:45
SJU
-
LHR
12h 29m
1 stop
Virgin Atlantic Logo
11:45 - 23:59
LHR
-
SJU
17h 14m
1 stop
£526Virgin Atlantic
Fri, 16 Oct - Sat, 31 Oct
KLM Logo
12:46 - 11:20
SJU
-
LHR
17h 34m
1 stop
KLM Logo
11:55 - 23:56
LHR
-
SJU
16h 01m
1 stop
£527KLM
Thu, 24 Sep - Mon, 28 Sep
Delta Logo
14:26 - 13:15
SJU
-
LHR
17h 49m
1 stop
Delta Logo
06:15 - 23:44
LHR
-
SJU
22h 29m
2 stops
£529Delta
Tue, 22 Sep - Fri, 25 Sep
United Airlines Logo
01:00 - 10:15
SJU
-
LHR
28h 15m
2 stops
United Airlines Logo
10:00 - 15:42
LHR
-
SJU
34h 42m
1 stop
£530United Airlines
Booking Insights

KAYAK’s insights & trends for San Juan to Heathrow flights

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

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

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

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 round-trip 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 September, where tickets cost £457 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £815 and £782 respectively.

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

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

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 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know - Cheap tickets from San Juan to London Heathrow Airport

Low seasonJanuary
Cheapest flight£199
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from San Juan to London Heathrow Airport

When to book flights from San Juan to Heathrow

Are your dates flexible? Find out the best times to travel from San Juan to Heathrow 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 San Juan to London Heathrow Airport 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 £199 for a one-way ticket and £486 for a return.

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

    San Juan and London Heathrow Airport 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 Heathrow Airport?

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

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

    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 Heathrow Airport.

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

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

    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 London Heathrow Airport with an airline and back to San Juan with another airline.

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

    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 Heathrow Airport from San Juan 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 San Juan to Heathrow

 
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 Heathrow? 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 2968 reviews
7.2Entertainment
7.9Crew
7.3Boarding
7.5Comfort
6.6Food
Airline reviews

we were an hour delayed after boarding and given no reason. Headsets cost money. Also there were openrows with no one setting in them but we were told we were not allowed to swtich.

6.0 GoodElena, Apr 2026
BOS - SFO
Read more JetBlue reviews

we were an hour delayed after boarding and given no reason. Headsets cost money. Also there were openrows with no one setting in them but we were told we were not allowed to swtich.

Flight was smooth, amenities (entertainment options and power outlets) were good, sears decent)

Flight team was very courteous only complaint wS the boarding process and mandatory bag check

Disaster This is why I stick to delta You get what you pay for

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.

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

It was a pretty smooth flight, I tend to get mini anxiety attacks during flights, however, this time was pretty smooth and I was able to relax. The only thing, I was having issues to connect to the Flyfi internet. I was not able to connect at all, I turned off my phone a couple times and didnt work.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Friendly crew, efficient boarding and flight arrived early. Couldn’t ask for a better experience

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

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

Information on your arrival and departure airports