In the Overview portion of the popup that appears, look for the description "MacBook Pro (Retina, 15-inch, Mid 2015)", or something similar.
The US Federal Aviation Administration (FAA) has banned certain MacBook Pro units that could pose a fire safety risk. The Department of Transportation (DOT) has a policy dating back years that bans passengers to fly with lithium batteries if they are the subject of a safety recall.
"The FAA is aware of the recalled batteries that are used in some Apple MacBook Pro laptops. In early July, we alerted airlines about the recall, and we informed the public", the airline regulator told NPR and Bloomberg in an emailed statement. If so, you need to get it fixed-for free-not only to keep your travel plans but because it could present a hazard to your home, office, or auto.
If you're in the market for a new laptop, you've probably stumbled upon a few Chromebooks at your local stores. Apple has issued a recall program notice in June and they offer free battery replacements for affected customers.
If you get a match, follow the instructions lower down on the page to find the nearest Apple Store or authorized fix shop, or arrange to mail your laptop to Apple, for the battery replacement. It said that passengers are not allowed to turn on the laptop or charge it during a flight.
Bloomberg says four airlines based in the UK, Italy and Canada managed by Total Cargo Expertise recently implemented the same ban.
You can check if your MacBook Pro is affected by searching for your serial number here.