Cheap flights from London to Ireland

The Aer Lingus Sale! Up to 30% off

Travel: 01 October 2025 until 25 March 2026. Book by: 16 September 2025

Welcome aboard the Aer Lingus Sale! Fasten your seatbelts and get ready to save up to 30% on flights to Ireland. From the cobbled streets of Dublin to Wild Atlantic Way sunsets, you’ll be landing in no time!

London Heathrow to

London Heathrow to
From	To	Fare Type	Dates	Price
London (LHR)	Dublin (DUB)	Each way / Economy	22 Oct 2025 - 29 Oct 2025	From £47.39 Seen: 1 hour ago
London (LHR)	Cork (ORK)	Each way / Economy	7 Oct 2025 - 11 Oct 2025	From £40.96 Seen: 4 hrs ago
London (LHR)	Shannon (SNN)	Each way / Economy	8 Oct 2025 - 12 Oct 2025	From £40.65 Seen: 2 hrs ago
London (LHR)	Knock (NOC)	Each way / Economy	2 Oct 2025 - 22 Oct 2025	From £41.49 Seen: 34 minutes ago

*Fares start from prices listed above and are each way, as part of a return trip.

*Terms and Conditions

Discount applies to fares only and when the fare is £0, there is no discount. Travel between 01 October 2025 and 25 March 2026. Book by 16 September 2025. Route operation dates may vary. All prices are subject to terms and conditions and are subject to availability. Limited availability during holidays and special events.

Aer Lingus Limited is registered in Ireland. Company Number 9215. Registered office at Dublin Airport, Dublin, Ireland. Aer Lingus (U.K.) Limited is registered in Northern Ireland. Company number NI 612895. Registered office at Belfast City Airport, Sydenham Bypass, Belfast, Co Antrim BT3 9JH, Northern Ireland.

Manhattan skyline with fictional shamrock island in Upper New York Bay

Great value to North America

Book now for excellent value fares to North America! Plus when you connect via Dublin, you pre-clear U.S. customs and immigration before you board your transatlantic flight.

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