Frequent fliers have a special challenge when it comes time to pick out headphones. Finding 'phones with a travel-friendly design, but that are also comfortable and provide great sound with some capability to block out ambient noise can be tough. Now add in a budget of $100 and you can forget about getting all those features in one package...or maybe not. Audio-Technica's ATH-ANC1 QuietPoint headphones may have an MSRP of $130, but they can be found online for $100, and they solidly address all of the above considerations.
Read the Audio-Technica ATH-ANC1 review.