They do have good sound quality and block out some of the noise but not all. In a flight they would not be compatable enough. I would suggest noise cancelling headphones that run on batteries. Much better sound quality and blocks out almost all noise.
Bose® - QuietComfort® 15 Acoustic Noise Cancelling® Headphones
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Sony - Noise Canceling Headphone - Black
Sennheiser - Noise-Canceling Folding Headphones