Cheapest return flights from San Jose to London in September from $640

AirHint found the following cheapest return flights from San Jose (SJC) to London (LGW) in September 2025 (see full year).

Return flights

18 Sep - 20 Sep Spirit Airlines
08 Sep - 25 Sep Icelandair
02 Sep - 16 Sep Icelandair
14 Sep - 22 Sep Icelandair
17 Sep - 30 Sep Icelandair
05 Sep - 12 Sep Icelandair
16 Sep - 27 Sep Icelandair
01 Sep - 13 Sep Icelandair

Also check the deals for one-way flights from San Jose 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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