LHR - SJU

£337 Find Cheap Flights from London Heathrow Airport to San Juan – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 34% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest return fare
£565
Typical prices: £580-£842
JetBlue
Wed 24/3Fri 2/4
LHR - SJU • 1 stop
Cheapest one-way flight
£337
Typical prices: £628-£972
JetBlue
Thu 10/12
LHR - SJU • 1 stop
Direct flights
Not available
There are currently no direct flights between Heathrow and San Juan. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £700 (return)
Shortest trip • 13h 04m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% 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 San Juan!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to San Juan

Wed, 24 Mar - Fri, 2 Apr
JetBlue Logo
07:25 - 18:55LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
15h 30m1 stop New York John F Kennedy Intl
JetBlue Logo
11:45 - 06:30SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 45m1 stop Boston Logan Intl
£565JetBlue
Wed, 24 Mar - Tue, 6 Apr
JetBlue Logo
07:25 - 18:55LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
15h 30m1 stop New York John F Kennedy Intl
JetBlue Logo
11:45 - 06:30SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 45m1 stop Boston Logan Intl
£565JetBlue
Tue, 17 Nov - Tue, 24 Nov
Multiple Airlines Logo
06:00 - 23:38LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
21h 38m2 stops Lisbon Humberto Delgado Miami
Multiple Airlines Logo
11:38 - 22:40SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
31h 02m2 stops Miami Lisbon Humberto Delgado
£599Multiple Airlines
Mon, 9 Nov - Thu, 19 Nov
Multiple Airlines Logo
20:25 - 23:38LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
31h 13m2 stops Amsterdam Schiphol Miami
Multiple Airlines Logo
16:52 - 12:40SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
15h 48m1 stop Miami
£621Multiple Airlines
Wed, 11 Nov - Tue, 24 Nov
Icelandair Logo
12:15 - 01:13LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
16h 58m2 stops Reykjavik Keflavik Intl Boston Logan Intl
Icelandair Logo
05:01 - 19:30SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
34h 29m2 stops Boston Logan Intl Reykjavik Keflavik Intl
£754Icelandair
Tue, 10 Nov - Tue, 24 Nov
Icelandair Logo
20:35 - 01:13LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
32h 38m2 stops Reykjavik Keflavik Intl Boston Logan Intl
Icelandair Logo
05:01 - 10:50SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
25h 49m2 stops Boston Logan Intl Reykjavik Keflavik Intl
£762Icelandair
Sat, 20 Feb - Fri, 5 Mar
Iberia Logo
09:15 - 20:00LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
14h 45m1 stop Madrid Barajas
Iberia Logo
18:10 - 18:15SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
20h 05m1 stop Madrid Barajas
£763Iberia
Mon, 15 Feb - Sat, 27 Feb
Iberia Logo
20:50 - 16:40LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
23h 50m2 stops Barcelona-El Prat Madrid Barajas
Iberia Logo
21:35 - 16:35SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
15h 00m1 stop Madrid Barajas
£780Iberia
Sat, 20 Feb - Sun, 28 Feb
British Airways Logo
06:30 - 00:58LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
22h 28m2 stops Dublin Philadelphia
British Airways Logo
13:12 - 06:45SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 33m1 stop Miami
£1,016British Airways
Tue, 2 Feb - Sun, 7 Feb
British Airways Logo
11:25 - 10:38LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
27h 13m2 stops Madrid Barajas Miami
British Airways Logo
15:14 - 08:15SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 01m1 stop Miami
£1,091British Airways
Booking Insights

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

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

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

Flight prices are below average for this route right now.

Flights to San Juan Luis Munoz Marin Intl Airport from London Heathrow Airport usually cost between £602 and £749 in March.
The lowest price found in the past 5 days was £565 on JetBlue (24 Mar–6 Apr).

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

The cheapest month for flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport is February, where tickets cost £570 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is £1,013 and £996 respectively.

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

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 13% 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 London Heathrow Airport to San Juan

Low season

September

Cheapest flight

£337
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (37% more expensive on average)
Flight from London Heathrow Airport to San Juan

When to book flights from Heathrow to San Juan

Are your dates flexible? Find out the best times to travel from Heathrow to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking London Heathrow Airport 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 £337 for a one-way ticket and £565 for a return.

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

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

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

    oneworld is the only airline alliance operating flights between London Heathrow Airport and San Juan.

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

    The two airlines most popular with KAYAK users for flights from London to San Juan are JetBlue and Iberia. With an average price for the route of £646 and an overall rating of 7.1, JetBlue is the most popular choice. Iberia is also a great choice for the route, with an average price of £1,037 and an overall rating of 7.0.

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport 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 Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

More options for your flight from Heathrow to San Juan

Complete your trip to San Juan with a hotel stay or car hire