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

Return flights

09 Apr - 13 Apr	Lufthansa
17 Apr - 20 Apr	Lufthansa
01 Apr - 06 Apr	Lufthansa
10 Apr - 13 Apr	Lufthansa
01 Apr - 09 Apr	Lufthansa
23 Apr - 30 Apr	Lufthansa
06 Apr - 30 Apr	Lufthansa
01 Apr - 12 Apr	Lufthansa
30 Apr - 03 May	Lufthansa
02 Apr - 06 Apr	Lufthansa
02 Apr - 07 Apr	Lufthansa

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 $281

Return flights