Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from New Hampshire to Ireland as you normally would.
Flights from New Hampshire to Ireland lean towards being more expensive in July. Prices are generally better when you fly from New Hampshire to Ireland in November, with the cheapest ticket starting at $375.
To save up to 82% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from New Hampshire to Ireland from $734 1-2 weeks out and tickets from $1,054 for flights departing within the next 72 hours.