Heathrow's strict security means long waits. Ensure all liquids are in a small bag to avoid delays during manual screening.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $617 (The Travel House) |
One-way from | $329 (Trip.com) |
Popular in | December |
Cheapest in | January |
Average price | $650 |
Good round-trip deal | $886 or less |
Good one-way deal | $554 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
mié. 3/18
6:35 am-4:45 pm
1 stop17h 10m
San Diego
mié. 4/15
11:00 am-9:40 am
1 stop14h 40m
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
jue. 2/12
12:50 pm-4:10 pm
Nonstop11h 20m
San Diego
mar. 3/31
9:00 am-6:20 am
1 stop13h 20m
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
mié. 2/11
12:50 pm-4:10 pm
Nonstop11h 20m
San Diego
vie. 2/27
1:32 pm-11:35 am
1 stop14h 03m
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
lun. 4/13
8:55 am-6:05 pm
1 stop17h 10m
San Diego
jue. 5/14
4:45 pm-11:30 am
Nonstop10h 45m
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
vie. 5/1
11:35 am-2:55 pm
Nonstop11h 20m
San Diego
mié. 5/13
4:45 pm-11:30 am
Nonstop10h 45m
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
sáb. 5/16
7:30 am-10:34 pm
2 stops23h 04m
San Diego
lun. 5/18
5:15 pm-10:40 pm
1 stop21h 25m
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
jue. 4/30
6:55 am-10:16 pm
2 stops23h 21m
San Diego
dom. 5/31
9:55 pm-6:55 am
1 stop25h 00m
LondonSan Diego
LCY - SAN
LCYSAN
London City
lun. 3/16
7:45 am-8:48 pm
2 stops20h 03m
San Diego
lun. 3/30
2:47 pm-4:40 pm
2 stops17h 53m
LondonSan Diego
LCY - SAN
LCYSAN
London City
lun. 2/9
10:00 am-8:37 pm
2 stops18h 37m
San Diego
lun. 2/23
6:25 am-8:10 am
2 stops17h 45m
LondonSan Diego
LCY - SAN
LCYSAN
London City
mié. 2/4
10:00 am-9:05 pm
2 stops19h 05m
San Diego
mié. 2/11
6:15 am-8:10 am
2 stops17h 55m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
The best time to book flights from London to San Diego is 45 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, February is the cheapest month in which you can book a flight from London to San Diego (average of $441). Flying from London to San Diego in August is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from London to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
The most flights from LON to SAN are scheduled on a Friday (11 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).
About 16% of weekly flights between London and San Diego have experienced delays in the past year, with the average delay time being 146 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, British Airways have had the lowest number of delays on this route, with just 16% of flights being delayed.
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Tim,Sep 2025
LHR - IAD
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Tim,Sep 2025
LHR - IAD
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Tim,Sep 2025
LHR - IAD
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Tim,Sep 2025
LHR - IAD
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Tim,Sep 2025
LHR - IAD
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$533 | Average$715 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$589 | Average$834 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$599 | Average$817 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$664 | Average$851 | FlexibilityNo cancel fee | On-time71% |