A coastal fortification with a large dome, overlooking a calm sea and distant mountains.

£452 Cheap Flights from London (LON) to San Juan (SJU)

View £452 flight on Sat, 6 Mar 2027

Popular airlines from London to San Juan (SJU-Luis Munoz Marin Intl.)

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

    Prices were available within the past 7 days and start at £452 for one-way flights and £660 for return, for the period specified. Prices and availability are subject to change. Additional terms apply.

    All deals

    One way

    Return

    Select JetBlue Airways flight, departing Fri, 29 Jan from London to San Juan, returning Thu, 4 Feb, priced at £660 Found 21 hours ago

    Fri, 29 Jan - Thu, 4 Feb · LHR · SJU · From £660 · Return

    Select JetBlue Airways flight, departing Fri, 29 Jan from London to San Juan, returning Tue, 2 Feb, priced at £660 Found 1 day ago

    Fri, 29 Jan - Tue, 2 Feb · LHR · SJU · From £660 · Return

    Select JetBlue Airways flight, departing Wed, 17 Feb from London to San Juan, returning Sat, 27 Feb, priced at £663 Found 3 days ago

    Wed, 17 Feb - Sat, 27 Feb · LHR · SJU · From £663 · Return

    Select JetBlue Airways flight, departing Thu, 11 Mar from London to San Juan, returning Fri, 26 Mar, priced at £664 Just found

    Thu, 11 Mar - Fri, 26 Mar · LHR · SJU · From £664 · Return

    Select JetBlue Airways flight, departing Thu, 11 Mar from London to San Juan, returning Fri, 19 Mar, priced at £665 Found 2 days ago

    Thu, 11 Mar - Fri, 19 Mar · LHR · SJU · From £665 · Return

    Select JetBlue Airways flight, departing Wed, 9 Jun from London to San Juan, returning Wed, 16 Jun, priced at £676 Found 3 days ago

    Wed, 9 Jun - Wed, 16 Jun · LGW · SJU · From £676 · Return

    Select TAP Portugal flight, departing Wed, 25 Nov from London to San Juan, returning Wed, 9 Dec, priced at £685 Found 5 days ago

    Wed, 25 Nov - Wed, 9 Dec · LGW · SJU · From £685 · Return

    Select Avianca flight, departing Thu, 18 Feb from London to San Juan, returning Sun, 21 Feb, priced at £749 Found 6 hours ago

    Thu, 18 Feb - Sun, 21 Feb · LHR · SJU · From £749 · Return

    Select Icelandair flight, departing Wed, 17 Mar from London to San Juan, returning Tue, 30 Mar, priced at £778 Found 3 days ago

    Wed, 17 Mar - Tue, 30 Mar · LGW · SJU · From £778 · Return

    Select Aer Lingus flight, departing Mon, 1 Feb from London to San Juan, returning Wed, 10 Feb, priced at £827 Found 15 hours ago

    Mon, 1 Feb - Wed, 10 Feb · LCY · SJU · From £827 · Return

    Alternative airports near San Juan

    Prices were available within the past 7 days. Prices and availability are subject to change.

    Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city centre is 16 minutes. Flights from £747

    16 min

    Find the cheapest month to fly from London (LON) to San Juan (SJU)

    November is typically the cheapest month to fly

    From £615 - £970 per traveller.

    View flights in November

    Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ.

    Book with confidence

    Compare flights from London to San Juan easily and book with confidence

    For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to San Juan. Operating between them flights per day, 5 airlines cover the route. And fly direct, getting you to Luis Munoz Marin Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from LON-All Airports to Luis Munoz Marin Intl..

    To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.

    Grab a great deal on your flight from LON-All Airports (LON) to Luis Munoz Marin Intl. (SJU)

    The easiest way to view the best deals on flights from London to San Juan today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from LON-All Airports to Luis Munoz Marin Intl. start at just £660 and range up to £827.

    To find an even better deal, try

    • being flexible on your dates – midweek flights can be cheaper
    • looking for other airports near London and San Juan
    • booking your flight during January, the cheapest month on this route
    • varying your flight times – early morning and late at night are sometimes cheaper

    Why you should book your London to San Juan flight with Expedia!

    We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from LON-All Airports to Luis Munoz Marin Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.

    Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.

    Travel information

    Origin airportHeathrow Airport
    Destination airportLuis Munoz Marin Intl. Airport
    Distance4,182 miles away
    Airlines servingBritish Airways, JetBlue Airways, Iberia, Avianca, Virgin Atlantic, Aer Lingus, Lufthansa, Air Canada, Icelandair, Air France, KLM, Finnair, American Airlines, Delta, United, TAP Portugal, Turkish Airlines
    Popular airlineBritish Airways
    Return price£660

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