Removing some back and forth and replacing with a summary of how to safely use Airport Wifi if needed.
@Colin4444 raises the valid point that public wifi is not the safest. While this is certainly true, there are ways to protect yourself should you need to access the internet while travelling, and millions continue to use public wifi without issue.
The primary attack method on public wifi is where an attacker uses a device that broadcasts a wifi hotspot, usually named very similarly to the official public wifi service. The goal is to trick people in the vicinity into connecting to that service thinking they are in fact on the official service. The next step typically relies upon the user browsing the internet and visiting a site the attacker has prepared for. Banking and some social media sites are the prime targets. If the user browses to mybank.com, the attackers device will serve up a fake version of the mybank.com homepage they created earlier. That page will send the details the user enters to the attacker. It may pass them on to the legitimate site also so you don't suspect anything, or just give you an error message.
As more and more sites move to passwordless authentication now using your biometrics or pass keys on your device, the opportunities for these attacks decreases as the credentials attackers are after are no longer transmitted.
It's also possible that the attacker could try to use the wifi sign-in page to trick you into downloading malware. Mobile devices default to blocking app installs from outside of the stores, so definitely don't disable that protection if you are going to use public wifi, and pay close attention to any popups you receive.
The most significant measure you can put in place is to install and use a
VPN, see some recommendations
here. Using a VPN means the data leaving your device will be encrypted, so even if you are tricked into connecting to a fake hotspot, the attacker will not be able to access your data or see what site you're visiting.
If you can't install or use a VPN for whatever reason, do the bare minimum. Stick to using Apps rather than using a browser (mobile App communications to the internet services backing them are encrypted) and definitely don't visit any site that requires you to enter a user name and password.
Airports are getting better at protecting their users often monitoring for spurious hotspots. The high profile
jailing of one perpetrator in Australia last year might put others off. Remote scams and phishing are much lower risk for the attackers than hanging around an airport.