This guide covers the legal framework governing air travel and adjacent travel services. Part one maps the regulatory architecture: the statutes the Department of Transportation enforces, the rules that implement them, the contract of carriage that supplies the enforceable private obligations, and the deregulation preemption doctrine that eliminates most state-law claims. Part two covers refunds and schedule disruption, including what constitutes a significant change, the unconditional refund right on cancellation, and the customer service plan commitments that determine hotel and meal obligations. Part three covers oversales and denied boarding compensation in detail. Part four covers baggage, domestically and under the international treaty regime, including the short notice periods and two-year limitations period that defeat most international claims. Part five covers disability access and the Complaints Resolution Official. Part six covers remedies in order of practical effectiveness, from the credit card chargeback through DOT complaints to small claims contract enforcement. Part seven covers rental cars, cruises, hotels, and third-party bookings, where the rules are contractual and generally less favorable. Tables and worked examples appear throughout.