Apple Airpods are just bluetooth headphones. I have used bluetooth headphones on flights for 2 years now with no issues.
The new iphone comes with a set of headphones that plug into the lightning port instead, but if you want to use a standard 3.5mm jack headphone set, then the new phone comes with a 3.5mm to lightning adaptor in the box.
What headphones does the iPhone 7 come with? - Pocket-lint
No problem.