not quite easy jet but you can NOT take a rucksack onto a coach within the uk. so be waery if using national express etc.
What if you're flying business class or 1st class rather than coach?
thinking there's a difference of what a coach is on the different sides of the pond... :S
Coach is the cheapest ticket class. Thus the least level of service/comfort.
When hiho mentioned 'coach' referring to bus travel, I didn't know about the rucksack thing, I have bussed around the UK quite a bit of late and have managed to take quite large bags/tool boxes into the cabin with me.
All the seats on an Easyjet flight would be classed as 'coach' seats for in the US.