This page displays the approximate flight duration time for a non-stop flight. The actual travel time may differ depending on the type and speed of the aircraft. Also note that the calculated distance between the two cities of Boston and Christchurch is the direct air distance (distance as the crow flies). Traveling on land involves larger distances.
Time difference between Boston and Christchurch
USA and New Zealand air distance
Air distance from Boston to cities near Christchurch:
latitude: 42° 19' North
longitude: 71° 05' West
latitude: 43° 32' South
longitude: 172° 37' East