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As far as I know, outside of the US, you can lock your luggage with whatever lock you like. I always (outside the US) use non-TSA locks where ever I go, nobody ever asked about it. If they really want to inspect your luggage they should ask you to open it for them. So yes, use your TSA lock. P.S. There may be more people with access to the TSA masterkey ...


Yes, assuming they issue you the Known Traveler Number (KTN) before you fly, you can add it to your reservation. As long as it's at least 72 hours (3 days) before the time of your flight, you can add the KTN to your reservation via Delta's website. After that, you'll need to call or visit an agent at the check-in desk. To do it on Delta's website, go to the ...


They will issue you a nine-digit known traveller number. Once you have it, you can add it to any existing flight reservations. Once time I added my KTN to my reservation when I checked in at the airport, about five minutes before I went through security.

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