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

Return flights

29 Sep - 06 Oct	easyJet
17 Sep - 24 Sep	easyJet
25 Sep - 09 Oct	easyJet
03 Sep - 07 Sep	easyJet
27 Sep - 28 Sep	Aer Lingus
27 Sep - 02 Oct	Aer Lingus
06 Sep - 09 Sep	Aer Lingus
12 Sep - 14 Sep	easyJet
20 Sep - 23 Sep	Aer Lingus
20 Sep - 22 Sep	Aer Lingus
13 Sep - 23 Sep	Aer Lingus
05 Sep - 07 Sep	Aer Lingus
18 Sep - 21 Sep	easyJet
27 Sep - 04 Oct	KLM
30 Sep - 04 Oct	KLM

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

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 Prague in September from 153€

Return flights