We are coming from the USA. After a short stay in Dublin, we are wanting to fly to London for a few days. Main airline travel complete except for the DUB>LHR leg. Should we book this leg early or are there enough regular flights to just walk up and purchase tx?
You want to book between 8 and 5 weeks before for the best prices certainly at least a month prior. You can get bookings on the day but unless you play golf with your bank manager on a regular basis I would not recommend it.
Remember short haul flights are not baggage friendly so keep your luggage to the minimum.
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Two rules for Ireland, Take your time & bring a sense of humour