AirHint found the following cheapest return flights from Glasgow (GLA) to Belfast (BHD) in December 2025 (see full year).

Return flights

06 Dec - 10 Dec	Aer Lingus	direct
06 Dec - 12 Dec	Aer Lingus	direct
11 Dec - 12 Dec	Aer Lingus	direct
06 Dec - 08 Dec	Aer Lingus	direct
13 Dec - 15 Dec	Aer Lingus	direct
08 Dec - 13 Dec	easyJet	direct
06 Dec - 13 Dec	Aer Lingus	direct
10 Dec - 11 Dec	easyJet	direct
29 Dec - 31 Dec	easyJet	direct
06 Dec - 11 Dec	Aer Lingus	direct
30 Dec - 02 Jan	Aer Lingus	direct
31 Dec - 01 Jan	easyJet	direct
30 Dec - 01 Jan	Aer Lingus	direct

Also check the deals for one-way flights from Glasgow 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 Glasgow to Belfast in December from 75€

Return flights