Originally Posted by
lsquare
What about same-day? If my flight is at 10 PM, can I get to airside at 8 AM if I really want to?
If you have a boarding pass, certainly. If you don't, you can't get it in NA destinations until 3~4 hours before dep. (when the counter opens for your flight). In HKG, you can get the counter to print it for you before the pandemic. Not sure about now.