Hi, I/wife planning to visit family in USA in March/April.Return flights available now at 448 euro each, Shannon/JFK.Would it be good to lock in now at these prices? Or should I wait, I seem to recall an Aer Lingus "sale" in Spring 2016? I have looked at United Airlines but 448 is cheapest around that time. If anyone has experience of booking flights to USA I would appreciate any comments on 448 euro available now. Thanks.