Cheapest return flights from London to San Jose in September from 671€

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

Return flights

21 Sep - 29 Sep jetBlue
19 Sep - 21 Sep Avianca
15 Sep - 29 Sep Avianca
07 Sep - 19 Sep Avianca
17 Sep - 27 Sep Avianca
14 Sep - 21 Sep Avianca
07 Sep - 21 Sep Avianca
12 Sep - 20 Sep Avianca
05 Sep - 20 Sep Avianca
13 Sep - 20 Sep Avianca
19 Sep - 03 Oct Avianca
17 Sep - 01 Oct Avianca
20 Sep - 10 Oct Avianca
20 Sep - 04 Oct 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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