A lot heavier than air.

The Emirates A380 comes in to land at Birmingham each day just before lunch.  The A380s are the biggest passenger plane currently operating and have a length of 73m and a wingspan of 80m.  Their fuel capacity is 323,546 litres which would give you a quite a few Nectar points when you fill up!  With a maximum take off weight of 575 t it just seems amazing that they can get off the ground at all!