United Cheap Flights from London to San Diego: UA LHR→SAN

View HK$3,873 flight on Mon, 2 Feb 2026Opens in a new window
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Prices were available within the past 7 days and start at HK$3,873 for one-way flights and HK$5,898 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 13 Mar - Sun, 22 Mar
LHR
London
SAN
San Diego
HK$5,898 Return, found 3 days ago
HK$5,898
Return
found 3 days ago
Select United flight, departing Fri, 13 Mar from London to San Diego, returning Sun, 22 Mar, priced at HK$5,898 found 3 days ago
United
Fri, 13 Mar - Sun, 22 Mar
LHR
London
SAN
San Diego
HK$5,916 Return, found 3 days ago
HK$5,916
Return
found 3 days ago
Select United flight, departing Fri, 13 Mar from London to San Diego, returning Sun, 22 Mar, priced at HK$5,916 found 3 days ago
United
Fri, 13 Mar - Sun, 22 Mar
LHR
London
SAN
San Diego
HK$6,766 Return, found 3 days ago
HK$6,766
Return
found 3 days ago
Select United flight, departing Fri, 13 Mar from London to San Diego, returning Sun, 22 Mar, priced at HK$6,766 found 3 days ago
United
Fri, 13 Mar - Sun, 22 Mar
LHR
London
SAN
San Diego
HK$6,815 Return, found 3 days ago
HK$6,815
Return
found 3 days ago
Select United flight, departing Fri, 13 Mar from London to San Diego, returning Sun, 22 Mar, priced at HK$6,815 found 3 days ago
United
Fri, 13 Mar - Sun, 22 Mar
LHR
London
SAN
San Diego
HK$7,066 Return, found 3 days ago
HK$7,066
Return
found 3 days ago
Select United flight, departing Fri, 13 Mar from London to San Diego, returning Sun, 22 Mar, priced at HK$7,066 found 3 days ago
United
Fri, 13 Mar - Sun, 22 Mar
LHR
London
SAN
San Diego
HK$7,115 Return, found 3 days ago
HK$7,115
Return
found 3 days ago
Select United flight, departing Fri, 13 Mar from London to San Diego, returning Sun, 22 Mar, priced at HK$7,115 found 3 days ago

Find the cheapest month to fly from London (LHR) to San Diego (SAN)

November is typically the cheapest month to fly

From HK$4,144 - HK$7,439 per traveller.
London to San Diego route information
Origin airport
Heathrow
Destination airport
San Diego Intl.
Distance
8756 km
Average flight time
11 hours 20 mins
*Available to Expedia members.