Originally Posted by
SMK77
Singapore Airlines has replaced Krug Grand Cuvee with Krug Vintage 2004 on all Suite and First Class flights. They are now the only ones serving vintage Krug and I guess they can claim the crown of serving the most expensive champagne (considering they serve it consistently on all flights).
Dom Perignon is still available as the alternative choice.
I think the prize of "most expensive champagne in the air" still goes to JL and their Salon offering.