Originally Posted by
LiviLion
There is one airline that has an unlimited hand baggage allowance subject to the same terms you mention above.
Believe it or not it's easyJet.
True, provided it fits within the baggage gauge (which is not large) and you can lift it. I image if you filled a size-compliant bag with gold bars (or lead bars) and were a professional weightlifter, they may still find a reason not to allow you to lug 100kg on-board. Remember LCCs have to make money too and excess baggage charges are their bread and butter.