You can stay overnight and sleep at 24-hour airport lounges, as long as they don't have any rules on how long you stay. Many airport lounges close at night or limit access to just a few hours before your flight.

The amount of time you can stay in an airport lounge is typically limited to 2 to 3 hours before your scheduled flight departure. This "maximum stay" policy is strictly enforced by most lounge networks, such as Priority Pass and DragonPass, as well as bank-specific lounges (like those from SBI or American Express), to prevent overcrowding and ensure all eligible passengers have a place to sit. However, there are exceptions: if you have a confirmed long-haul layover or if your flight is significantly delayed, lounge staff will often grant extensions at their discretion. Some ultra-premium lounges or those attached to "First Class" tickets may not have a formal time limit, allowing you to stay for the duration of your layover. In 2026, many lounges are moving toward a "digital check-in" system that tracks your entry time; if you exceed the limit without a valid reason, you may be asked to leave or pay an additional guest fee. To avoid disappointment, always check the specific "Terms and Conditions" for your lounge access on your credit card portal or the lounge's official app before you arrive.