We will be flying from Boston to Asia with an initial stop at London Heathrow on BA arriving about 8 pm local time on a thursday in April. Then we have a choice to continue on BA to Bangkok on a nonstop flight leaving london on Friday night at 10 pm arriving saturday afternoon at 3 pm, or we can take a nonstop Thai Airways flight leaving 12 noon on Friday arriving Saturday morning at 6:30. In either case, we are fine just checking into a decent hotel near Heathrow Thursday night and resting there since we are spending a few days in London on the way back. Price wise it is slightly cheaper to stay with BA for all of the legs of our trip, but the 11 hour Thai Airways flight is during the day. Therefore, it won't be an "overnight" flight for our body clocks and we will have basically a full day in Bangkok to add to our schedule. I gather that Thai Airways safety record is much improved since the problems of the 1990s also. Any recommendations as to which airline to use for this connection would be appreciated.