Cheap flights from London to San Diego

from as little as £445

24 nights in San Diego, departing London Heathrow on 25 / Aug / 2025 with British Airways (price found 18 hours ago)

Subject to availability, prices correct of the last 24 hours
San Diego

The London / San Diego route

All 8852 km of it

Cheap flight deals for this route

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San Diego flight facts

What you need to know

Alternative flights from the UK to San Diego

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San Diego

Today alone, Netflights has searched over 6,353 flights. 25 / Aug / 2025 is currently the lowest priced day of the year to fly the London/San Diego route. There are around 1,245 flights on any given week from the UK to San Diego and the cheapest month to fly right now is August.

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

Min / Max Temperature (°C)
LOWEST

9 °C

AVG

17 °C

HIGHEST

25 °C

Rainfall (mm)
LOWEST

0 mm

AVG

21.5 mm

HIGHEST

52 mm

Key facts about San Diego

How to get cheap flights from London to San Diego

Tips and advice from our flight experts

Find a good deal on your flight from London to San Diego with Netflights. 1,245 flights go via this route every week, and we've collected them all to help you find the best flight deal. If you want to keep your options open, take a look at flights from another airport in London.

London Heathrow (LHR) is the most popular airport in this city for flights to San Diego, and the most popular airlines are Aer Lingus, Air Canada & British Airways. Both flight prices and accommodation rates fluctuate throughout the year, but searching by month will reveal the cheapest times to fly.

On average, the 8852 km flight to San Diego takes 15 hrs 45 mins. If you want a bargain, keep an eye out for flights with Lufthansa, as they often have good deals. Or you could broaden your search by looking at flights to other airports in the USA to see if there are any cheaper options.

Today alone, we’ve scanned 6,353 flights worldwide to bring you the best flight deals in one place. Did you know you can also compare car hire and hotel prices in the USA with Netflights? Take a look to get an idea of prices in San Diego.

Other popular destinations near San Diego

Where other people are flying to

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