Baggage policies are rules set by airlines that explain how much luggage you can bring on a flight. These policies often include details about the number of bags allowed, their size and weight limits, and any fees for extra or oversized luggage. It's important to check these rules before your trip to avoid surprises at the airport. Different airlines have varying baggage policies, so what works for one may not apply to another. For example, American Airlines might allow one free carry-on bag, while Delta may have different restrictions. Always review the specific airline's guidelines to ensure a smooth travel experience.