10 hours 5 mins with ba through heathrow, with 1 hour and a quarter in lhr. 1 hr 10 mins flying to lhr and 7 hours 40 mins flying to jfk. lots of other options via ams/cdg or with aa from lhr or vs from lgw Probbaly quickest to drive to man (3 hrs max) and fly to new york from there 7 hours.