Oh dear - mea culpa. Sounds like a 'Let Me Google That For You' moment!
Still odd that they don't fall foul of the 'doing business in Iran / with Iran' provisions....one would have thought any airline selling tickets for the entire journey from Tehran to Boston (this i HAVE checked on the BMI website and it IS possible) would be in trouble, even though the actual aircraft on the legs of the flight from LHR to IAD and BOS are, as you point out, operated by United.
Last edited by ilesmark; 3rd Feb 2012 at 14:34.