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

Return flights

22 May - 26 May	Air France
15 May - 26 May	Air France
11 May - 18 May	Air France
04 May - 18 May	Air France
14 May - 02 Jun	KLM
30 May - 13 Jun	Air France
03 May - 14 Jun	Air France
22 May - 05 Jun	Air France
15 May - 27 May	Air France
13 May - 27 May	Air France
16 May - 24 May	Air France
10 May - 16 May	Air Canada
03 May - 17 May	Air Canada
06 May - 19 May	Air Canada
30 May - 06 Jun	Avianca
26 May - 04 Jun	Avianca
30 May - 08 Jun	Avianca
30 May - 07 Jun	Avianca
31 May - 04 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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from London to San Jose in May from $766

Return flights