The countries that have shorelines along the Baltic Sea are Denmark, Estonia, Latvia, Finland, Germany, Lithuania, Poland, Russia, and Sweden.
The group of countries presently referred to by the shorthand Baltic states are Estonia, Latvia, and Lithuania.
Vilnius International Airport (Google Map)
Tallinn Airport (Google Map)
The best time to visit the Baltic States is late spring or summer, when there’s usually enough fine weather to allow you to stroll around the cities and make significant forays into the great outdoors.