AirHint found the following cheapest return flights from Southend (SEN) to Belfast (BFS) in December 2025 (see full year).

Return flights

17 Dec - 23 Dec	easyJet
17 Dec - 18 Dec	easyJet
26 Dec - 05 Jan	easyJet
17 Dec - 21 Dec	easyJet
21 Dec - 23 Dec	easyJet
22 Dec - 23 Dec	easyJet
24 Dec - 26 Dec	easyJet
29 Dec - 02 Jan	easyJet
28 Dec - 05 Jan	easyJet
24 Dec - 28 Dec	easyJet
31 Dec - 01 Jan	easyJet
26 Dec - 28 Dec	easyJet
26 Dec - 02 Jan	easyJet
17 Dec - 26 Dec	easyJet
29 Dec - 05 Jan	easyJet
26 Dec - 29 Dec	easyJet
29 Dec - 22 Jan	easyJet
28 Dec - 01 Jan	easyJet
31 Dec - 04 Jan	easyJet
29 Dec - 01 Jan	easyJet

Also check the deals for one-way flights from Southend to Belfast in December.

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 Southend to Belfast in December from $155

Return flights