Cheapest return SJO–LHR flights, September

AirHint found the following cheapest return flights from San Jose (SJO) to London (LHR) in September 2026 (see full year).

Return flights

13 Sep - 27 Sep KLM
13 Sep - 23 Sep KLM
12 Sep - 24 Sep KLM
29 Sep - 08 Oct KLM
27 Sep - 09 Oct KLM
19 Sep - 02 Oct KLM
12 Sep - 03 Oct KLM
13 Sep - 19 Sep Air France
11 Sep - 25 Sep KLM
18 Sep - 29 Sep KLM
08 Sep - 29 Sep Lufthansa
09 Sep - 08 Oct Air Canada
10 Sep - 24 Sep KLM

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

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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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