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

Return flights

09 Mar - 17 Mar	Icelandair
01 Mar - 10 Mar	Air Canada
17 Mar - 26 Mar	Air Canada
15 Mar - 25 Mar	Air Canada
13 Mar - 25 Mar	Air Canada
08 Mar - 26 Mar	Air Canada
08 Mar - 15 Mar	Air Canada
03 Mar - 11 Mar	Iberia
05 Mar - 17 Mar	Iberia
01 Mar - 09 Mar	Iberia
31 Mar - 16 Apr	Air Canada
20 Mar - 14 Apr	Air Canada
18 Mar - 02 Apr	Air France
18 Mar - 01 Apr	Air France
19 Mar - 03 Apr	Avianca
19 Mar - 08 Apr	Avianca
09 Mar - 20 Apr	Avianca
24 Mar - 08 Apr	Air France
24 Mar - 07 Apr	Air France
09 Mar - 13 Apr	Avianca

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

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 March from $719

Return flights