Flights from London Heathrow to San Juan (Puerto Rico)

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
Best option
London Heathrow
San Juan (Puerto Rico)
Outbound
08/12/25
1 Stopover (JFK)
AA0141, B60403
14h 49min
Return
24/12/25
1 Stopover (JFK)
B60904, AA0100
15h 35min
American Airlines, JetBlue Airways
£524
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
1 Stopover (JFK)
B62220, B60503
14h 55min
Return
24/12/25
1 Stopover (JFK)
B61004, B61107
25h 05min
JetBlue Airways
£590
London Heathrow
San Juan (Puerto Rico)
Outbound
08/12/25
1 Stopover (JFK)
B62220, B60503
14h 55min
Return
24/12/25
1 Stopover (JFK)
B61104, B60007
17h 39min
JetBlue Airways ?
£602
London Heathrow
San Juan (Puerto Rico)
Outbound
20/10/25
1 Stopover (JFK)
DL0002, DL1859
17h 24min
Return
11/11/25
2 Stopovers (JFK, BOS)
DL1854, DL5798, DL0058
20h 05min
Delta Air Lines
£693
London Heathrow
San Juan (Puerto Rico)
Outbound
20/10/25
1 Stopover (BOS)
B61621, B60261
12h 40min
Return
11/11/25
1 Stopover (JFK)
B61104, B60007
15h 35min
JetBlue Airways
£700
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
London Heathrow
San Juan (Puerto Rico)
Outbound
13/10/25
2 Stopovers (CDG, JFK)
AF1381, AF0004, DL1859
22h 04min
Return
15/10/25
1 Stopover (JFK)
B60304, B61107
21h 30min
Air France, Delta Air Lines
£771
London Heathrow
San Juan (Puerto Rico)
Outbound
08/12/25
1 Stopover (BOG)
AV0121, AV0258
23h 00min
Return
24/12/25
1 Stopover (BOG)
AV0259, AV0120
16h 30min
Avianca
£835
London Heathrow
San Juan (Puerto Rico)
Outbound
20/10/25
1 Stopover (JFK)
B60020, B62903
14h 29min
Return
11/11/25
1 Stopover (BOS)
B60162, B61620
19h 40min
JetBlue Airways
£836
Prices based on recent searches, subject to last-minute changes
Page 1 / 3

Tips and tricks to help you find cheap flights from London Heathrow to San Juan (Puerto Rico)

Favourite airline: e.g. JetBlue Airways, Lufthansa
The favourite airline for flights from London Heathrow to San Juan (Puerto Rico) is JetBlue Airways.
JetBlue Airways
31 %
Lufthansa
31 %
Icelandair
15 %
Favourite connection: via New York
When booking flights from London Heathrow to San Juan (Puerto Rico) 80 % of travellers prefer to fly via New York.
Route
bookings
1 stopover New York John F Kennedy
18h 31min, from 914 £
80 %
2 stopovers Frankfurt-Main New York John F Kennedy
24h 20min, from 1 160 £
20 %

Important flight information

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

Outbound and return from 523,40 £
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
Flight destinations with a similar price