How Long Should Connection Times Be Between Flights?
Trying to make a tight connection between flights is a surefire way to add unnecessary stress (and a possible missed flight) to your journey. And you can't always count on airlines for guidance; their recommended connection-time minimums often leave frequent travelers wondering how anyone could possibly get to another flight in the suggested amount of time.
The amount of time you should allow between connecting flights varies depending on the airport, the airline, and whether or not you'll have to clear customs or go through security to switch terminals. As a general rule of thumb, it's safe to assume that, on domestic connections, anything less than 45 minutes is a bad idea—and you'll likely be better off doubling that amount of time and scheduling about 90 minutes between flights. For international flights connecting with domestic flights, add enough time to clear customs.