Similar to the fares from Dublin already posted on this forum, business returns from Belfast start from 706 GBP Boston, 707 NYC, 882 LAS, 934 GBP HNL, and many others... 757s on transatlantic but lie flat...
Multiple options available over Easter season, July and August wide open too.
Have been watching this phenomenon for several months now and it's seems like the Irish are getting all the breaks! Similiar fares from UK/Europe are at least twice as much... and Dublin BC fares to US have been just unreal, not sure if that's just a system error or a low demand related issue?
Not sure how it would work out re miles on Star Alliance or One World, but with Sky Team (slighlty more expensive out of DUB) one correctly routed multi-city trip to HNL in January will take me to Silver instantly, not to mention all the extra award miles related to the current level.
An example of UA flight:
https://www.united.com/web/en-US/app...GB&MobileOff=1