Cheapest return flights from Belfast to Copenhagen in September from $219

AirHint found the following cheapest return flights from Belfast (BHD) to Copenhagen (CPH) in September 2025 (see full year).

Return flights

15 Sep - 18 Sep easyJet
18 Sep - 27 Sep easyJet
26 Sep - 30 Sep Aer Lingus
18 Sep - 20 Sep Aer Lingus
28 Sep - 06 Oct Aer Lingus
11 Sep - 14 Oct KLM
27 Sep - 29 Sep Aer Lingus
21 Sep - 24 Sep Aer Lingus
14 Sep - 17 Sep Aer Lingus
05 Sep - 07 Sep easyJet
06 Sep - 09 Sep Aer Lingus
12 Sep - 14 Sep KLM

Also check the deals for one-way flights from Belfast to Copenhagen in September.

Skyscanner

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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