You can technically choose to skip your connecting flight—a practice known as "Skiplagging" or Hidden City Ticketing—but it comes with high-fidelity risks and penalties in 2026. Airlines strictly prohibit this in their "Contract of Carriage" because their pricing models are based on origin-destination pairs rather than the distance flown. If you skip the final leg of your journey, the airline will almost certainly cancel all remaining flights on that itinerary, including your return trip. Furthermore, if you are a frequent flyer member, the airline may freeze your account, strip you of your elite status, or even ban you from the airline entirely if they detect a pattern of this behavior. You also cannot check baggage, as it will be tagged to the final destination, not your layover city. While not "illegal" in a criminal sense, it is a high-fidelity violation of your agreement with the carrier, and they reserve the right to bill you for the "High-Fidelity" price difference between the flight you took and the one you actually booked.