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

Return flights

02 May - 09 May	Icelandair
01 May - 09 May	Icelandair
11 May - 20 May	Icelandair
10 May - 19 May	Icelandair
12 May - 14 May	Icelandair
13 May - 20 May	SWISS
07 May - 18 May	SWISS
13 May - 27 May	SWISS
28 May - 10 Jun	SWISS
03 May - 12 May	Icelandair
11 May - 17 May	Icelandair
18 May - 01 Jun	Air France
22 May - 01 Jun	Air France
03 May - 14 Jun	Air France
31 May - 08 Jun	Air France
29 May - 30 Jun	Air France
29 May - 19 Jun	Air France
30 May - 08 Jun	Air France
29 May - 07 Jun	Air France
25 May - 03 Jun	Air France

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

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 May from 642€

Return flights