Southampton to Belfast Flights on Aer Lingus from £44.47*

Book Southampton to Belfast flight deals*

Jul 2025
From£46.97*
Seen: 24 minutes ago
Each way/Economy
Aug 2025
From£44.47*
Seen: 14 hrs ago
Each way/Economy
Sep 2025
From£44.47*
Seen: 22 hrs ago
Each way/Economy
£46.97
£125.97
Displaying fares for July-2025
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    • Range£46.97-£125.97

    * Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.