Flights from London Heathrow to San Juan (Puerto Rico) with Icelandair

Our cheapest offers for flights from London Heathrow to San Juan (Puerto Rico)

Here you can compare cheap flights from London Heathrow (LHR) to San Juan (Puerto Rico) (SJU) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to San Juan (Puerto Rico). Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
London Heathrow
San Juan (Puerto Rico)
Outbound
08/12/25
2 Stopovers (KEF, JFK)
FI0451, FI0615, FI7959
19h 34min
Return
24/12/25
2 Stopovers (JFK, KEF)
B60904, FI0614, FI0450
20h 05min
Icelandair
£947
London Heathrow
San Juan (Puerto Rico)
Outbound
08/12/25
2 Stopovers (KEF, JFK)
FI0455, FI0615, FI7959
35h 14min
Return
24/12/25
2 Stopovers (JFK, KEF)
FI7973, FI0614, FI0450
18h 59min
Icelandair ?
£749
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: London Heathrow - San Juan (Puerto Rico)

Outbound and return from 523,40 GBP
Distance 6737 km
Departure airport Airport London Heathrow (LHR)
Arrival airport Airport San Juan - Luis Muñoz Marín International Airport (SJU)
Destination country Flights to Puerto Rico
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