AirHint found the following cheapest one-way flights from London (LHR) to Sofia (SOF) in March 2026 (see full year).

One-Way flights

11 Mar	British Airways
26 Mar	Air Serbia
07 Mar	British Airways	direct
11 Mar	British Airways	direct
27 Mar	LOT
27 Mar	Bulgaria Air	direct

Also check the deals for return flights from London to Sofia 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 one-way flights from London to Sofia in March from $105

One-Way flights