AirHint found the following cheapest return flights from London (LHR) to Sofia (SOF) in April 2026 (see full year).

Return flights

07 Apr - 09 Apr	SWISS
08 Apr - 11 Apr	SWISS
24 Apr - 26 Apr	SWISS
24 Apr - 26 Apr	British Airways	direct
10 Apr - 13 Apr	SWISS
27 Apr - 03 May	SWISS
03 Apr - 19 Apr	SWISS
18 Apr - 03 May	Lufthansa
10 Apr - 13 Apr	British Airways	direct
19 Apr - 26 Apr	British Airways	direct
07 Apr - 13 Apr	Lufthansa
09 Apr - 15 Apr	Austrian Airlines
24 Apr - 01 May	British Airways	direct
27 Apr - 03 May	British Airways	direct

Also check the deals for one-way flights from London to Sofia in April.

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 Sofia in April from 174€

Return flights