Skipping the second half of a flight—a practice known as "Hidden City Ticketing"—is technically possible but comes with significant risks in 2026. For example, if you book a flight from New York to London with a layover in Paris, but your actual destination is Paris, you simply walk out of the airport during the layover. However, airlines strictly prohibit this in their "Contract of Carriage." If you skip a segment, the airline will automatically cancel the rest of your itinerary, including your return flight. Furthermore, you cannot check luggage, as it will be sent to the final ticketed destination (London). In 2026, airlines use sophisticated AI to track "skip patterns"; if you do this frequently, they may revoke your frequent flyer miles, strip you of elite status, or even ban you from the airline. While it can save money in the short term, the "gold standard" for travel security is to always fly your full ticketed route. The only exception is if you have a "flexible" ticket and officially change your destination with an agent, though this will usually incur a fare difference.