Cheapest return flights from London to San Jose in September from 655€

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

Return flights

18 Sep - 27 Sep SWISS
06 Sep - 21 Sep Avianca
11 Sep - 21 Sep Avianca
13 Sep - 24 Sep Avianca
14 Sep - 28 Sep Avianca
06 Sep - 20 Sep Avianca
24 Sep - 06 Oct Avianca
01 Sep - 15 Sep jetBlue
01 Sep - 31 Oct Air Canada
02 Sep - 15 Sep Air France
23 Sep - 04 Oct American Airlines
01 Sep - 05 Sep Avianca

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