Can I keep multiple passports for automatic check-in? Alex Nosovs September 14, 2022 09:31 Updated Sorry, but for now, you can't keep multiple passports for one passenger. You can only keep one passport per passenger. Related articles If I've already chosen seats, where will you check-in me? What about paid seats? What is auto check-in? How do I use it? Is automatic check-in available for my flight/airline? Can I change my auto check-in information after I have already submitted it? Can I get a seat with extra space in front of me? Comments 0 comments Please sign in to leave a comment.