Valid booking: Many airports are perfectly fine with passengers sleeping before flights, but they don't want strangers using their space. Having a boarding pass or valid flight booking to show staff can help if you are confronted.

Sleeping at the airport is a common practice for travelers with early morning flights, and most major 24/7 international airports tolerate it, provided you have a valid boarding pass or proof of a flight for the following morning. While some airports provide dedicated "rest zones," "quiet rooms," or even sleep pods (like Minute Suites or YOTEL), most travelers find themselves on terminal benches or carpeted floors. For a successful stay, it is best to scout locations away from high-traffic areas and loud speakers. Security may ask to see your travel documents during overnight "sweeps" to ensure you are a legitimate passenger. It is crucial to keep your belongings secure by using your bag as a pillow or chaining it to your seat. While sleeping airside (past security) is generally more comfortable and safer, many airports only allow you to pass through security a few hours before your flight, meaning you may have to stay in the "landside" public area until the checkpoints open in the early morning.