qasa k
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If you are interested in flying EK to LHR, then transfer to a flight from LHR to MIA, VS operates the LHR-MIA route with 747s. Some of the posts on this thread mentioned that the A340s are better. Frankly, if you are flying Upper Class on a VS 747, you might have a choice of seating in the nose or upper deck of the plane, which is advantage over flying an A340.