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

Return flights

07 Mar - 16 Mar	Delta
07 Mar - 23 Mar	Delta
24 Mar - 31 Mar	British Airways
25 Mar - 10 Apr	KLM
23 Mar - 30 Mar	Air France
30 Mar - 13 Apr	British Airways
31 Mar - 13 Apr	British Airways
24 Mar - 12 Apr	British Airways
25 Mar - 13 Apr	British Airways
19 Mar - 27 Mar	Delta
30 Mar - 12 Apr	British Airways
31 Mar - 12 Apr	British Airways
20 Mar - 29 Mar	Delta
28 Mar - 13 Apr	British Airways
28 Mar - 04 Apr	British Airways
28 Mar - 12 Apr	British Airways

Also check the deals for one-way flights from San Jose to London 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 San Jose to London in March from 560€

Return flights