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

Return flights

19 Aug - 27 Sep	Air France
19 Aug - 26 Sep	Air France
19 Aug - 28 Sep	Air France
05 Aug - 13 Aug	United
17 Aug - 29 Aug	United
22 Aug - 25 Aug	United
13 Aug - 29 Aug	United
06 Aug - 18 Aug	United
06 Aug - 17 Aug	United
06 Aug - 20 Aug	United
28 Aug - 06 Sep	Wizz Air Malta
25 Aug - 01 Sep	United
16 Aug - 01 Sep	Ryanair
27 Aug - 09 Sep	Ryanair
18 Aug - 01 Sep	Ryanair
23 Aug - 04 Sep	Ryanair
18 Aug - 09 Sep	FlyOne (Romania)
18 Aug - 31 Aug	United
13 Aug - 27 Aug	United
05 Aug - 27 Aug	United

Also check the deals for one-way flights from London to San Jose 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 London to San Jose in August from $818

Return flights