Cheap flights from London to Ireland
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How to find the cheapest flight from
London (LON) to Ireland
How far in advance should I book a flight from London to Ireland?
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 46 days in advance, which can save you up to 140% on flights from London to Ireland compared to booking the week you need them. Waiting 46 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £69. For sooner than that we have options available in the next 3 days from £103.