Amazon has the Bose QuietComfort 35 Series II noise cancelling headphones on sale for just $299. These are about $50 off, and while that might not seem like a big discount, this is one of the very few times that the QuietComfort 35's have been discounted. Bose very rarely discounts its products, so it's definitely worth it to jump on this deal.
The Bose QuietComfort 35 Series II are the second-generation of Bose' very popular noise cancelling headphones. These provide some great noise cancellation here, so you can use these while you are traveling and block out all of the noise around you. Especially useful when you are flying. The QuietComfort 35 also has Google Assistant built-in. This means that you can talk to Google Assistant through your headphones, which is also pretty sweet. Finally, the sound quality here. Bose, as expected, provides some really good sounding audio in the QuietComfort 35's here. Bose is pretty well-known for its fantastic sounding audio. With some rich bass as well as crystal clear mids and highs. Making for a really great experience. These will also last for around 20 hours on a single charge, and that's with noise cancellation turned on. So if you turn off noise cancellation, you can likely get closer to 30 hours of playback, and that number will also vary based on the music you are playing, the volume, etc.
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 $119/year (or $59/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.