dj6
From memory about 10 years ago one large airline in the US began a policy of upfront charging the very obese for the extra seat they needed with a refund if the plane was less than full.
As I recall, that was South West. Taking a quick look at the site, it seems that this ruling is still in force. (It was a quick look)
radeng Ouch! and Oooh! and Yikes!
