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

Return flights

01 Jul - 07 Jul	KLM
01 Jul - 08 Jul	KLM
09 Jul - 30 Jul	United
08 Jul - 22 Jul	Aer Lingus
13 Jul - 20 Jul	Aer Lingus
06 Jul - 21 Jul	Aer Lingus
27 Jul - 03 Aug	United
23 Jul - 13 Aug	United
23 Jul - 03 Aug	United
23 Jul - 28 Jul	United
01 Jul - 19 Jul	KLM
16 Jul - 26 Jul	United
17 Jul - 02 Aug	United
29 Jul - 12 Aug	United
12 Jul - 21 Jul	Aer Lingus
28 Jul - 13 Aug	United
29 Jul - 14 Aug	United
27 Jul - 09 Aug	United
30 Jul - 18 Aug	United
28 Jul - 11 Aug	United

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

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 July from $979

Return flights