Transferring a trip to another person in 2026 is highly dependent on the service provider's contract. Airline tickets are almost universally non-transferable; you generally cannot simply change the name on a ticket to a different person. However, most cruise lines (like Princess or Carnival) and tour operators allow "Passenger Substitutions" for a fee (ranging from $50 to $150), provided at least one original guest remains on the booking and the change is made well before the departure date. For "non-refundable" hotel bookings, some travelers use secondary marketplaces like SpareFare to sell their reservations to others. Always check the specific "Fare Rules" before attempting a transfer, as full cancellations and rebookings are often the only path.