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Shortly, you lose your ticket if you lose the confirmation email, the travel code, cannot find the payment details (fast enough) IF you do not know where you travel from. So because of privacy issue, you cannot checkin online only with your lastname i.e. without the code in the given list of airlines. BUT you can still make checkin at the airport if you know the date, travel locations and have your passport, so just go to the airport.
Upvote:0
Imagine, I had a friend whom I know booked a flight on June 2nd to the US. Now I want to play a trick on him by cancelling the flight in his name. Please tell me how to find the booking code so I can pull this off.
Did I get your question right?