Cheapest one-way flights from Southampton to Belfast in September from 21€

AirHint found the following cheapest one-way flights from Southampton (SOU) to Belfast (BFS) in September 2025 (see full year).

One-Way flights

26 Sep easyJet direct
25 Sep easyJet direct
27 Sep easyJet direct
07 Sep easyJet direct
15 Sep easyJet direct
22 Sep easyJet direct
11 Sep Aer Lingus direct
08 Sep easyJet direct
28 Sep Aer Lingus direct
01 Sep Aer Lingus direct

Also check the deals for return flights from Southampton to Belfast 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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