Whether you must collect your luggage depends on if your flights are on a single ticket (PNR) and if you are crossing an international border. If you are flying within the same country on one ticket, your bags are typically "checked through" to the final destination. However, if you are entering a new country (e.g., flying from Mumbai to New York via London), you must collect your bags at your first U.S. port of entry to clear customs, even if your bag is tagged to your final city. In 2026, airlines like IndiGo have simplified this for domestic-to-international connections within India, but the "first port of entry" rule for international-to-domestic travel remains the global standard. Always verify with the check-in agent; if your baggage tag only shows the mid-point city, you must perform "baggage gymnastics" and re-check it yourself, which is a high-value detail to confirm before you leave the origin airport.