Hey everyone,

I'm flying LIM>US tomorrow evening. I'm going to the airport to get a new passport just before I drop my bags. However, I'd like to check in with my 'old' passport to get an earlier instrument tiebreaker. Is it possible to check in with my 'old' passport and then have the ticket agent change the passport that's going to be used for the flight?

Thanks in advance for your insights, and I understand this may be a bit tedious.