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

Return flights

14 Aug - 08 Sep	Avianca
13 Aug - 26 Aug	Avianca
15 Aug - 09 Sep	Avianca
01 Aug - 01 Sep	Avianca
11 Aug - 24 Aug	Avianca
19 Aug - 02 Sep	Avianca
14 Aug - 24 Aug	Avianca
15 Aug - 22 Aug	Avianca
15 Aug - 23 Aug	Avianca
17 Aug - 22 Aug	Avianca
20 Aug - 27 Aug	Volaris Costa Rica
26 Aug - 23 Sep	Avianca
26 Aug - 20 Sep	Avianca
03 Aug - 09 Aug	Avianca
07 Aug - 11 Aug	Avianca

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

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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Cheapest return flights from San Jose to London in August from $628

Return flights