Yes, in most cases, an international business class ticket grants you complimentary access to the airline's branded lounge or a partner lounge at your departure and connecting airports. For example, a United Polaris or Delta One ticket provides full access to their respective premium lounges. However, for domestic business class within the United States, access is often not included unless it is part of a premium transcontinental route (like NYC to LA). In 2026, many airlines have tightened these rules to prevent overcrowding, so "short-haul" or "regional" business class may not always provide entry. If your ticket doesn't automatically grant access, you can still enter using a Priority Pass (often included with premium credit cards like the Amex Platinum), a one-time paid pass, or through high-tier frequent flyer status. Always check the specific lounge policy on the airline's app before you head to the airport, as some "ultra-premium" lounges (like the United Polaris Lounges) are strictly reserved for those on long-haul business class metal only.