On this page, you can find and buy flight tickets from London to San Juan. This 6,765 km flight connects the United Kingdom with Puerto Rico, providing regular links between the regions' largest transportation hubs.
Ticket prices change constantly depending on demand and seasonality, so we recommend using our low-price calendar and price trend charts. The world's leading airlines operate on this route, offering both direct flights and convenient connecting options.
Below is a calendar of the lowest flight ticket prices for London — San Juan by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $643 in b, and the most expensive are around $665 in n. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
London → San Juan, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | $867 | high | May | $625 | low | Sep | $586 | low |
| Feb | $828 | high | Jun | $918 | high | Oct | $574 | low |
| Mar | $854 | high | Jul | $969 | high | Nov | $663 | medium |
| Apr | $727 | medium | Aug | $701 | medium | Dec | $994 | high |
Some values are estimated based on seasonality.
The warmest period in San Juan is considered to be August, with an average temperature of 30.3°C, while the rainiest is September, with up to 25 wet days recorded per month. Relatively cool and dry weather is observed in February and March, making this the most comfortable time to fly.
Price analysis shows that the most favorable offers are available in March, when a flight can be booked starting $664. There is currently no data on minimum fares for other months, so we recommend monitoring real-time price updates using the charts on this page.
As a compromise between weather and ticket costs, we recommend considering March: it is one of the driest months with the most affordable fares. It is best to avoid the peak hurricane season in September and October, when rainfall is at its highest.
On the route from London to San Juan, air services are provided by major international carriers, including British Airways and American Airlines. Most flight options involve one or two layovers depending on the chosen hub airport, allowing for flexible travel budget planning. A detailed schedule, information on flight frequency, and available classes of service are provided in the list below.
Flights London — San Juan depart from Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport and arrive at Luis Muñoz Marín International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
The distance between the cities is 6,765 km. Including layovers, the total travel time usually starts from 11–13 hours, depending on the duration of the connection at the transit airport.
The majority of flights are operated by major airlines such as British Airways, American Airlines, Virgin Atlantic, and Iberia. A full list of current carriers and the schedule are available on this page.
Prices change constantly, but the most favorable fares are usually available when booking 8–12 weeks in advance. You can always check the current minimum in the low-price calendar on this page.
The method of getting to the departure airport depends on the specific terminal; most often, passengers choose express trains or the London Underground.
Flights arrive at Luis Muñoz Marín International Airport (SJU). There are several convenient ways to get from the airport to the city center, including taxis and transfers.
Where travelers fly most — pick a route and check prices
