AirHint found the following cheapest return flights from Southampton (SOU) to Belfast (BFS) in May 2026 (see full year).

Return flights

01 May - 03 May	easyJet	direct
15 May - 17 May	easyJet	direct
29 May - 01 Jun	easyJet	direct
01 May - 04 May	easyJet	direct
15 May - 22 May	easyJet	direct
18 May - 20 May	easyJet
19 May - 26 May	easyJet
18 May - 20 May	easyJet	direct
19 May - 26 May	Aer Lingus	direct

Also check the deals for one-way flights from Southampton to Belfast in May.

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 Southampton to Belfast in May from 48€

Return flights