Cheapest one-way flights from San Diego to London in September from $265

AirHint found the following cheapest one-way flights from San Diego (SAN) to London (LHR) in September 2025 (see full year).

One-Way flights

06 Sep Frontier Airlines
01 Sep Frontier Airlines
08 Sep Frontier Airlines
05 Sep Frontier Airlines
15 Sep Spirit Airlines
22 Sep Spirit Airlines
23 Sep Spirit Airlines
12 Sep Spirit Airlines
19 Sep Spirit Airlines
25 Sep Frontier Airlines

Also check the deals for return flights from San Diego to London in September.

Skyscanner

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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