Flute glasses, thanks to their height, are great for viewing sparkling wine as long as it is sufficiently open. The downsides are: they are very fragile, they cause slow pouring and the risk of overflow when you pour too quickly, all very minor problems. Depending on its size, a bottle of Champagne can fill between 6 and 10 flute glasses.
Coupe glasses make poor sparkling wine vessels as the bubbles form poorly and they do not last as long as in flute glasses, also, the bouquet disperses much more rapidly. Depending on its size, a bottle of Champagne can fill between 6 and 12 tasting glasses
Tulip glasses can also be used for Champagne. They are tulip-shaped, placed on a stem of medium height. Depending on its size, a bottle of Champagne can fill between 8 and 12 tasting glasses.