Originally Answered: How do I know if a passenger is boarded on a flight or not? Unless you are the one who purchased the ticket for the passenger flying, airlines will not give out that information. In the United States, it is falls under the Privacy Act of 1974.

For privacy and security reasons, airlines will not disclose a passenger manifest or confirm if a specific person is on a flight to the general public. If you call an airline asking for a passenger's status, they will cite privacy laws and refuse to share that information unless you are a law enforcement official with a warrant. However, there are indirect ways to track someone’s progress if they have shared their details with you. If you have their Flight Number, you can use apps like FlightAware or FlightRadar24 to see if the plane has departed, is currently in the air, or has landed. Some airlines also have "track my flight" features on their websites. If you have the person's PNR (Booking Reference) and last name, you can often log into the "Manage Booking" section of the airline’s website to see the status of the ticket. Without those specific details, you are generally left waiting for the person to contact you directly upon arrival, as modern aviation security protocols are designed to keep passenger lists strictly confidential.