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

Return flights

02 May - 12 May	Icelandair
09 May - 23 May	Icelandair
06 May - 20 May	Norse Atlantic Airways (UK)
08 May - 19 May	Icelandair
05 May - 15 May	Lufthansa
09 May - 17 May	Icelandair
02 May - 09 May	Icelandair
02 May - 16 May	Icelandair
09 May - 16 May	Icelandair
11 May - 19 May	Norse Atlantic Airways (UK)
29 May - 09 Jun	easyJet
24 May - 03 Jun	Avianca
29 May - 05 Jun	Avianca
31 May - 14 Jun	Avianca
25 May - 08 Jun	Avianca
21 May - 10 Jun	SWISS
29 May - 06 Jun	easyJet
23 May - 05 Jun	Air France
23 May - 07 Jun	Air France
23 May - 06 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 582€

Return flights