Depending on your situation, you might also want to tell them your name, seat assignment, cabin class, or any other personal information which they legitimately need to know. In general, there is no good reason to provide anyone with your booking code or confirmation number (or whatever your airline calls it).

Sharing your flight number is generally safe and very helpful for friends or family who are picking you up, but you should avoid sharing it publicly on social media alongside your full name. A flight number alone (e.g., AA123) is public information; however, when combined with your name and date of travel, a malicious actor could potentially use it on an airline's "Manage Booking" page to see your seat number, dietary preferences, or even attempt to change your flight. In 2026, with the rise of AI-driven social engineering, "oversharing" your travel plans can also alert burglars that your home will be empty. The safest practice is to share your flight details via private messaging apps or dedicated travel-sharing tools like TripIt. Never post a photo of your boarding pass barcode or your confirmation number publicly, as those contain "Record Locator" data that can be used to access your entire frequent flyer account and personal contact information.