AirHint found the following cheapest return flights from San Diego (SAN) to London (LGW) in July 2025 (see full year).

Return flights

30 Jul - 08 Aug	Spirit Airlines
22 Jul - 28 Jul	Spirit Airlines
31 Jul - 09 Aug	Spirit Airlines
24 Jul - 03 Aug	jetBlue
09 Jul - 24 Jul	jetBlue
16 Jul - 27 Jul	jetBlue
26 Jul - 02 Aug	jetBlue
18 Jul - 03 Aug	Frontier Airlines
21 Jul - 01 Aug	Spirit Airlines
12 Jul - 21 Jul	jetBlue
09 Jul - 16 Jul	Spirit Airlines
17 Jul - 21 Jul	Frontier Airlines
13 Jul - 21 Jul	Spirit Airlines
19 Jul - 27 Jul	Frontier Airlines
18 Jul - 20 Jul	Spirit Airlines
05 Jul - 19 Jul	Spirit Airlines
18 Jul - 02 Aug	Spirit Airlines

Also check the deals for one-way flights from San Diego to London in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from San Diego to London in July from $778

Return flights