MacBook won’t connect to WiFi

Hi all, pretty much what the title says. I flew earlier this week and my MacBook wouldn’t connect to the WiFi but my phone did. I’m flying again later in the week and would like to figure out what the problem is before I’m in the air. I’ve been able to connect before but haven’t been able to the last two times I flew. Does anyone have a solution for this?! I appreciate it 😭