AirHint found the following cheapest return flights from Newcastle (NCL) to Belfast (BFS) in September 2025 (see full year).

Return flights

03 Sep - 09 Sep	easyJet	direct
02 Sep - 04 Sep	easyJet	direct
16 Sep - 18 Sep	easyJet	direct
07 Sep - 10 Sep	easyJet	direct
29 Sep - 30 Sep	easyJet	direct
02 Sep - 03 Sep	easyJet	direct
04 Sep - 07 Sep	easyJet	direct
28 Sep - 29 Sep	easyJet	direct
03 Sep - 08 Sep	easyJet	direct
28 Sep - 30 Sep	easyJet	direct
30 Sep - 01 Oct	easyJet	direct
25 Sep - 11 Oct	British Airways

Also check the deals for one-way flights from Newcastle to Belfast 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 Newcastle to Belfast in September from 39€

Return flights