If you want a cheap flight from San Juan Puerto Rico to London, you've got six airlines to choose from. You can use the search box to filter your preferences, but we've found that the cheapest day to fly is 27 / Sep / 2025.
You can use the filters on your search to see more flights and find cheaper rates – London has more than one airport. So if you don't need to fly into London Heathrow, it's worth checking your other options. The 6735 km flight usually takes about 15 hrs 5 mins.
You'll find that the cheapest flights There are 48 direct and indirect flights a week to London, so you should be able to find one that works for you. The most popular airlines are Iberia Airlines, Lufthansa & Virgin Atlantic.
During this peak season, hotel and holiday prices often increase too, so it's best to book early. Or you could keep your fingers crossed and hold out for a last-minute deal.
