In the world of air travel, the primary difference between a transit and a stopover is the length of time spent in a connecting city and your status at the airport. A transit (or layover) is a short connection, typically lasting anywhere from 30 minutes to 23 hours and 59 minutes for international flights. During a transit, you usually remain "airside" in the secure area of the airport, and your checked bags are automatically transferred to your next flight. A stopover is an intentional break in your journey lasting 24 hours or longer (or 4 hours for domestic U.S. flights). With a stopover, you officially enter the country, clear customs/immigration, and typically collect your bags. Many airlines, like Turkish Airlines, Qatar, and Icelandair, offer free or discounted stopover programs to encourage you to visit their hub city for a few days as a "mini-vacation" before continuing to your final destination. In short: transit is a quick pause; stopover is a side-trip.