Extract from HyperWar Link below:
At the beginning of the 1943 season, conditions generally along the North Atlantic route were superior to those pertaining in the previous year. Personnel at the North Atlantic Wing bases were more numerous and more experienced, and communications facilities were more complete, though far from perfect. To handle the anticipated increase of traffic, the North Atlantic Wing in March secured permission to use Dow Field at Bangor, Maine, as a second staging point for the overseas movement of tactical crews and their aircraft. In March, too, Meeks Field near Keflavik in Iceland was opened as a replacement for the crowded airdrome at Reykjavik.
The new season opened with something of a flourish. When Col. Robert M. Love, Deputy Chief of Staff of the ATC, ferried a B-17 directly across the North Atlantic from Newfoundland to Prestwick in a ten-hour flight on 16-17 April, he was one of approximately sixty ferry pilots cleared within a few hours to fly the same route.
So a 10 hour flight non-stop in a B-17 from Newfoundland. Would be longer if you count flight time from a US base to there, but that seems to be an average time from "The New World" to the old. Remember also, that time was probably just a ballpark figure. Lots of variables would have entered into each flight, but 10 hours is probably average for a no problem flight. Many landed at bases in Greenland and Iceland because of mechanical trouble, weather, etc, and I assume they would top off the fuel before flying on. Read more at the link below.
http://www.ibiblio.org/hyperwar/AAF/VII/AAF-VII-4.html
<message edited by SHAEF1944 on 09/08/2008 07:27:39 AM >