LON - SJU

£334 Find Cheap Flights from London to San Juan – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£554
Typical prices: £601-£911
Multiple Airlines
Mon 5/11Sun 11/11
LHR - SJU • 2 stops
Cheapest one-way flight
£334
Typical prices: £418-£678
Multiple Airlines
Tue 9/1
STN - SJU • 3 stops
Direct flights
There are currently no direct flights between London and San Juan Luis Munoz Marin Intl Airport. You'll need to take a connecting flight to reach the destination.
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Top routes
Cheapest • 18% average savings
Most popular
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When to book
in advance
Our data shows that travellers who book at least 7 weeks in advance save around 47% compared to booking last minute.
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Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg £543 (return)
Shortest trip • 13h 06m (one-way)
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Insights
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to San Juan Luis Munoz Marin Intl Airport!
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Flight Deals

Cheap Flights from London to San Juan (LON-SJU)

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

Recent return flight deals from London to San Juan

Thu, 5 Nov - Wed, 11 Nov
Multiple Airlines Logo
12:15 - 10:15LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
26h 00m2 stops Reykjavik Keflavik Intl Orlando
Multiple Airlines Logo
03:55 - 19:30SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
35h 35m2 stops Orlando Reykjavik Keflavik Intl
£554Multiple Airlines
Tue, 3 Nov - Tue, 10 Nov
Multiple Airlines Logo
06:30 - 23:38LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
21h 08m2 stops Amsterdam Schiphol Miami
Multiple Airlines Logo
16:52 - 12:35SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
15h 43m1 stop Miami
£576Multiple Airlines
Sun, 1 Nov - Mon, 9 Nov
JetBlue Logo
07:45 - 14:40LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
34h 55m1 stop New York John F Kennedy Intl
JetBlue Logo
20:39 - 06:55SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
30h 16m1 stop Boston Logan Intl
£598JetBlue
Sun, 1 Nov - Sun, 8 Nov
JetBlue Logo
07:45 - 20:48LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
17h 03m1 stop New York John F Kennedy Intl
JetBlue Logo
07:00 - 06:55SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
19h 55m1 stop Boston Logan Intl
£598JetBlue
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
£756Icelandair
Mon, 1 Feb - Mon, 8 Feb
Icelandair Logo
12:15 - 10:22LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
26h 07m2 stops Reykjavik Keflavik Intl Boston Logan Intl
Icelandair Logo
10:43 - 10:50SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
20h 07m2 stops New York John F Kennedy Intl Reykjavik Keflavik Intl
£768Icelandair
Thu, 11 Feb - Sat, 20 Feb
Iberia Logo
09:15 - 20:00LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
14h 45m1 stop Madrid Barajas
Iberia Logo
21:35 - 14:55SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 20m1 stop Madrid Barajas
£882Iberia
Thu, 7 Jan - Thu, 21 Jan
British Airways Logo
06:30 - 23:59LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
21h 29m2 stops Dublin Philadelphia
British Airways Logo
15:14 - 08:15SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 01m1 stop Miami
£1,048British Airways
Thu, 7 Jan - Thu, 21 Jan
British Airways Logo
06:30 - 23:59LHR  London Heathrow-SJU San Juan Luis Munoz Marin Intl
21h 29m2 stops Dublin Philadelphia
British Airways Logo
15:14 - 08:15SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
13h 01m1 stop Miami
£1,048British Airways
Tue, 27 Oct - Wed, 4 Nov
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
15:17 - 12:05SJU  San Juan Luis Munoz Marin Intl-LHR London Heathrow
16h 48m1 stop Miami
£1,085Iberia
Booking Insights

Price, demand, and travel trends for London to San Juan Luis Munoz Marin Intl Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest London to San Juan Luis Munoz Marin Intl Airport flight route?

London Heathrow Airport (LHR) to San Juan Luis Munoz Marin Intl Airport (SJU) is the cheapest London to San Juan Luis Munoz Marin Intl Airport route, averaging £697 return. Other London to San Juan Luis Munoz Marin Intl Airport routes average £906, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from London to San Juan Luis Munoz Marin Intl Airport?

Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from London to San Juan Luis Munoz Marin Intl Airport. It’s 9% cheaper than the average day, while Friday is the most expensive, with prices 4% higher.

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

•February is the cheapest month to fly from London to San Juan Luis Munoz Marin Intl Airport at £551 return.
•December (£943) and July (£910) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 71% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from London to San Juan Luis Munoz Marin Intl Airport the cheapest?

Flights from London to San Juan Luis Munoz Marin Intl Airport are cheapest 7 weeks before departure. Booking in this window typically costs about 47% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for London to San Juan Luis Munoz Marin Intl Airport flights

Low season

June

Cheapest flight

£334
Beat the crowds with an average 68% drop in traveller numbers.
The most popular month to fly with an average 1% increase in traveller numbers.
One-way flight from London Stansted Airport to San Juan Luis Munoz Marin Intl Airport

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 return price

Your London to San Juan Luis Munoz Marin Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from London to San Juan Luis Munoz Marin Intl Airport?

    Three cabin classes are available on flights from London to San Juan Luis Munoz Marin Intl Airport:

    • Economy class
    • Premium Economy Class
    • Business Class

  • How long is a flight from London to San Juan Luis Munoz Marin Intl Airport?

    A direct flight from London to San Juan Luis Munoz Marin Intl Airport takes 00m, covering 4,193 miles.

  • Do I need a passport to fly from London to San Juan Luis Munoz Marin Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a London to San Juan Luis Munoz Marin Intl Airport flight?

    Return flights from London to San Juan Luis Munoz Marin Intl Airport range from £601 to £911, with an average of £736 over the past 12 months. Anything below £601 counts as a good deal.

  • How expensive are last-minute London to San Juan Luis Munoz Marin Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 25% above the £736 route average. Book 7 weeks before departure for the lowest fares.

  • How are flight prices from London to San Juan Luis Munoz Marin Intl Airport looking right now?

    One-way fares from London to San Juan Luis Munoz Marin Intl Airport are currently higher than usual. Average one-way flight prices are about £573, which is 10% above the typical average for this route.

  • Which car hire options are available at San Juan Luis Munoz Marin Intl Airport (SJU)?

    San Juan Luis Munoz Marin Intl Airport (SJU) hosts 5 major car hire companies, with daily rates starting from around £3 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • U-Save
    • Payless
    • Hertz
    • Europcar

  • Which airports can I use when flying from London to San Juan Luis Munoz Marin Intl Airport?

    Flights from London to San Juan Luis Munoz Marin Intl Airport may depart from several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN). Flights usually arrive at San Juan Luis Munoz Marin Intl (SJU).

  • Which airports do connecting flights from London to San Juan Luis Munoz Marin Intl Airport pass through?

    One-stop flights from London to San Juan Luis Munoz Marin Intl Airport most commonly connect through:

    • New York John F Kennedy Intl (JFK) – 66% of one-stop connections
    • Madrid Barajas (MAD) – 14% of one-stop connections
    • Boston Logan Intl (BOS) – 13% of one-stop connections
    • Bogotá El Dorado (BOG) – 3% of one-stop connections

  • Can I save money by using flexible dates for flights from London to San Juan Luis Munoz Marin Intl Airport?

    Yes. Flexible dates can save you up to 14% on flights from London to San Juan Luis Munoz Marin Intl Airport. Sunday is the cheapest departure day at £670 return on average, while Friday is the most expensive at £772, a difference of £101.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different stopover airport from London to San Juan Luis Munoz Marin Intl Airport?

    Flying via Madrid Barajas (MAD) gives the shortest average 1-stop total travel time of 13h 06m, compared to 13h 38m via Washington, D.C. Dulles Intl (IAD) and 14h 10m via Philadelphia (PHL).

  • What is the time difference between London and San Juan Luis Munoz Marin Intl Airport?

    San Juan Luis Munoz Marin Intl Airport is 5 hours behind London (Atlantic Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Juan Luis Munoz Marin Intl Airport?

    Some of the most popular sights in San Juan Luis Munoz Marin Intl Airport are Condado Beach and Viejo San Juan. These are among the most viewed places in San Juan Luis Munoz Marin Intl Airport on KAYAK.

Your guide to booking London to San Juan Luis Munoz Marin Intl Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Friday. On this route, Sunday flights average £670, about £101 less than Friday fares (13% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 47% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London to San Juan Luis Munoz Marin Intl Airport trip for February. Fares historically average £551 return in that month – typically £392 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Juan Luis Munoz Marin Intl Airport.

    • Coral by The Sea Hotel
    • Hampton Inn & Suites by Hilton San Juan
    • San Juan Airport Hotel

More options for your flight from London to San Juan

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