Cheapest return flights from Southampton to Belfast in September from $152

Best time to book flights for Southampton (SOU) to Belfast (BFS) flights at AirHint

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

Return flights

30 Sep - 03 Oct Aer Lingus direct
29 Sep - 03 Oct Aer Lingus direct
15 Sep - 19 Sep Aer Lingus direct

Also check the deals for one-way 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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