Hello, Jmw1014! Thank you for visiting the Apple Support Communities. We know that staying connected during trips must be important to you, and we would be happy to help with this.
From what we gather, there only seems to be an issue when connecting your iPad with certain Wi-Fi networks. There are several troubleshooting steps that we can suggest for an issue like this. To get started, please use the steps listed in the following Apple Support article first:
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support
If you continue to notice the same issue with this specific network, we can help you more. To continue, it may be necessary to confirm that the access point is configured with the recommended settings for Apple devices. It may be necessary to ask the flight support staff for help with this. This last article provides more information on the best way to configure a Wi-Fi connection:
Recommended settings for Wi-Fi routers and access points - Apple Support
We hope that this information helps you and allows you to get connected on your next trip. Please let us know if we can assist with anything else.
Cheers!