Finding out if another person has a plane ticket is generally difficult due to strict airline privacy policies and data protection laws like GDPR. Airlines will not disclose passenger lists or confirm a booking to a third party without the passenger's explicit consent or a legal court order. To check a flight status online, you typically need both the traveler's last name and the six-digit booking reference (PNR). If you lack these, you cannot "search" for a passenger by name alone. However, if you share a travel loyalty account or if the person has shared their itinerary via email (which apps like TripIt can scan), you may see the details. Parents or legal guardians may sometimes get information for minors, but for adults, the only reliable way to know is if the traveler shares the information with you directly or if you have access to their personal communication or payment records where the receipt was sent.