Cheap flights from London Heathrow to San Juan Puerto Rico

from as little as £454

13 nights in San Juan Puerto Rico, departing London Heathrow on 16 / Sep / 2025 with JetBlue (price found 28 hours ago)

Subject to availability, prices correct of the last 24 hours
San Juan Puerto Rico

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The London Heathrow / San Juan Puerto Rico route

All 6735 km of it

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San Juan Puerto Rico flight facts

What you need to know

Alternative flights from the UK to San Juan Puerto Rico

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San Juan Puerto Rico

Today alone, Netflights has searched over 1,517 flights. 16 / Sep / 2025 is currently the lowest priced day of the year to fly the London Heathrow/San Juan Puerto Rico route. There are around 425 flights on any given week from the UK to San Juan Puerto Rico and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

21 °C

AVG

26 °C

HIGHEST

30 °C

Rainfall (mm)
LOWEST

69 mm

AVG

125.7 mm

HIGHEST

158 mm

Key facts about San Juan Puerto Rico

How to get cheap flights from London Heathrow to San Juan Puerto Rico

Tips and advice from our flight experts

If you're looking to fly from London Heathrow to San Juan Puerto Rico, you might like to know that 16 / Sep / 2025 currently has the cheapest flights. At the moment, there are five airlines flying to San Juan Puerto Rico. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to San Juan Puerto Rico.

The most popular airlines offering flights to San Juan Puerto Rico are British Airways, Iberia Airlines & JetBlue. British Airways is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?

Generally speaking, the flight from London Heathrow to San Juan Puerto Rico takes around 12 hrs 40 mins. The fastest flight takes 11 hrs to cover the 6735 km distance. You can view all flight times yourself in the results list.

The cheapest month to fly to San Juan Puerto Rico is June, while April is when the prices of flights, hotels and car hire will be at their highest. If you need somewhere to stay for your trip to Puerto Rico, take a look at our accommodation options.

Other popular destinations near San Juan Puerto Rico

Where other people are flying to

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