Cheapest return flights from London to Sofia in December from $109

Best time to book flights for London (LHR) to Sofia (SOF) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Sofia (SOF) in December 2025 (see full year).

Return flights

02 Dec - 09 Dec British Airways direct
15 Dec - 22 Dec Lufthansa
13 Dec - 17 Dec Lufthansa
22 Dec - 28 Dec SWISS
22 Dec - 26 Dec SWISS
22 Dec - 27 Dec SWISS
20 Dec - 24 Dec KLM
24 Dec - 28 Dec Austrian Airlines
23 Dec - 28 Dec Austrian Airlines
21 Dec - 27 Dec SWISS

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

Skyscanner

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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