Charter flights are private flights that are not part of the regular airline schedule. They can be booked for specific trips, allowing passengers to travel to destinations that may not be served by commercial airlines. These flights can accommodate various group sizes, from small parties to larger groups, and offer flexibility in departure times and routes. Unlike commercial flights, which have fixed schedules and routes, charter flights provide a more personalized travel experience. They are often used for business trips, special events, or vacations, allowing travelers to avoid crowded airports and long security lines.