The Bose Quiet Comfort 15 just are too bulky to carry, and a real hassle to sleep in.  I have therefore had a few trips with the Beats Tour headphones. http://www.beatsbydre.com/earphones/beats-tour/beats-beatstour,default,pd.html

They are small, comfortable and I got a set of refurbished ones on ebay for $9.99!!!!

The sound quality is great. I’ll report back when I have used them in anger!
If you don’t hear from me – I reverted to the Bose!