Whether or not you must clear a passport check depends on whether the airport you have arrived from and your destination are within or outside the Schengen Area.
- You are arriving from and are heading for an airport within the Schengen Area:Usually there is no ID check.
- You are arriving from a Schengen country and are traveling to a non-Schengen country:You will probably have to clear a passport check. Depending on your nationality, you may require a transit visa. If in doubt, please contact an embassy or consulate of your country.
- You are arriving from outside the Schengen Area and your destination is in a non-Schengen country:Usually no passport check is mandatory, provided that you do not leave the transit zone. Depending on your nationality, you may require a transit visa. If in doubt, please contact an embassy or consulate of your country.
- You are arriving from an airport in a non-Schengen country and are traveling to a destination within the Schengen Area:You will probably have to clear a border check. Depending on your nationality, you may require a transit visa. If in doubt, please contact an embassy or consulate of your country.
See Also
The Layover Guide to Frankfurt