Cheapest return flights from London to San Jose in September from $801

Best time to book flights for London (LCY) to San Jose (SJO) flights at AirHint

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

Return flights

23 Sep - 07 Oct SWISS
02 Sep - 18 Sep SWISS
16 Sep - 27 Sep SWISS
27 Sep - 07 Oct KLM
19 Sep - 04 Oct KLM
12 Sep - 21 Sep KLM
20 Sep - 04 Oct KLM
05 Sep - 21 Sep KLM
15 Sep - 21 Sep KLM
06 Sep - 18 Sep SWISS
13 Sep - 23 Sep KLM
13 Sep - 27 Sep KLM
01 Sep - 07 Sep KLM
06 Sep - 20 Sep KLM
14 Sep - 05 Oct Delta

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