Sorry to ask again, their had been many threads about this already, but i'm not sure if i remember correctly. I want to send my daughter (adult) to KL for a Passport swap. Her Thai Passport is new and yet unused. Leaving Bangkok she has to use her Swiss Passport at the Immigration. But using the Thai Passport for check in and booking or has she to use the Swiss Passport for check in too an from there on to use the Thai Passport (enter and leave KL, return to Bangkok)? Thanks for information.

Departure Check In: She can show either Passport for ID (as there is no Visa requirement for her destination)

Thai Departure Immigration: Swiss Passport 

KL Arrival Immigration: *Either Passport 

KL Departure Immigration: *Same Passport

Thai Arrival Immigration: Thai Passport 

 

 

 

She will only need to show the Swiss passport at check in if they ask for it.

Thanks, so we have to use the Thai Passport for the booking.

2 minutes ago, ubonjoe said:

She will only need to show the Swiss passport at check in if they ask for it.

Thanks, completely understood now, so i can book the tickets now.