Cheapest return flights from London to San Jose in September from 862€

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

14 Sep - 28 Sep KLM
08 Sep - 22 Sep KLM
16 Sep - 30 Sep SWISS
16 Sep - 23 Sep SWISS
13 Sep - 28 Sep KLM
05 Sep - 15 Sep KLM
03 Sep - 17 Sep KLM
19 Sep - 26 Sep KLM
10 Sep - 23 Sep KLM
01 Sep - 15 Sep KLM
26 Sep - 12 Oct KLM
26 Sep - 11 Oct KLM
19 Sep - 04 Oct KLM
26 Sep - 03 Oct KLM

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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