AirHint found the following cheapest return flights from Belfast (BHD) to Sofia (SOF) in January 2026 (see full year).

Return flights

29 Jan - 03 Feb	easyJet
30 Jan - 02 Feb	Aer Lingus
30 Jan - 03 Feb	easyJet
16 Jan - 23 Jan	Aer Lingus
22 Jan - 29 Jan	easyJet
23 Jan - 29 Jan	Aer Lingus
12 Jan - 16 Jan	Aer Lingus
21 Jan - 28 Jan	Aer Lingus

Also check the deals for one-way flights from Belfast to Sofia in January.

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 Belfast to Sofia in January from $166

Return flights