So I was booking a flight for me and friends from Beijing to Tokyo, but mistakenly missed a digit in a friend's passport. I did not check in online of course.
The flight's tomorrow. Will there be problems checking in at the airport?
Call the airline's service hotline ASAP. They should be able to fix it or at least give a lot more authoritative information than we can.
It greatly depends on the airline. With some if you've already checked in, but put a wrong number in field, their might website let you "check-in again" during which you can fix the wrong digit.
Other airlines, you can only check-in once, and there's no way to undo it. So you'll have to go to the counter and tell them, you think you might have inputted an incorrect passport number by mistake. They are gonna check your passports anyways, specially if it's an international flight.
This has kinda happened to my mom, yet she had no trouble as I think the airline must have fixed it when she checked her bags and confirmed all the info.
I suspect airline employees familiar with the "tricky" passport numbers of specific countries can fix the issue. Or the system is build to handle the leading zeros and possible "format" variations.
Try to correct the info online on the airline's website first, if not possible,just call them to learn what do to. Get to the airport with plenty of time though, JIC