Amazon currently has the first generation of the Bose QuietComfort 35 headphones on sale for just $329. Now that is only $20 off of its regular price, but it is also the lowest all-time price for a brand new pair of QuietComfort 35's, so it's worth grabbing. Bose headphones almost never go on sale, which makes this price a great one to jump on.
The Bose QuietComfort 35 (Series I) Headphones are one of the best pairs of headphones available right now. These feature noise cancellation, which makes them great for taking on a long flight (in fact, many airlines supply them in their first-class and business cabins on long haul flights). These also sport some really good audio quality, which is what you would expect from Bose after all. But you're looking at some crisp and clear bass, as well as crystal clear mids and highs. It's not super bass-heavy like some other headphones out there, but there is enough to keep most people happy. These are Bluetooth headphones, and the battery will last around 20 hours on a charge. That's pretty good already, but you can double that to 40 hours, if you use the included 3.5mm cable and only use noise cancellation. Which is even better. Bose offers the QC35's in two colors: black and silver, both of which are on sale right now.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap (usually $3.99) next-day shipping if you need it extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year (or $49/year for students). Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.