I've done paid work on an airplane WiFi connection through Viasat and really did not find the latency to be an issue at all, including working in the terminal.

I've done paid work on an airplane WiFi connection through Viasat and really did not find the latency to be an issue at all, including working in the terminal. No doubt everyone has different experiences and tolerance levels for latency, but, really, I think the latency issue is vastly overblown.