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

Return flights

14 Jul - 19 Jul	SWISS
04 Jul - 08 Jul	Air Serbia
01 Jul - 08 Jul	SWISS
07 Jul - 11 Jul	SWISS
04 Jul - 06 Jul	Air Serbia
08 Jul - 12 Jul	SWISS
09 Jul - 13 Jul	LOT
19 Jul - 09 Aug	Air Serbia
04 Jul - 07 Jul	Lufthansa
12 Jul - 16 Jul	Air Serbia
26 Jul - 09 Aug	Air Serbia
03 Jul - 05 Jul	Bulgaria Air	direct
17 Jul - 01 Aug	Lufthansa
27 Jul - 02 Aug	Lufthansa
27 Jul - 20 Aug	Lufthansa
25 Jul - 23 Aug	Air Serbia
24 Jul - 23 Aug	Lufthansa
20 Jul - 17 Aug	Lufthansa
31 Jul - 30 Aug	LOT
26 Jul - 09 Aug	British Airways	direct

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

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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from London to Sofia in July from 168€

Return flights