Port of Piraeus Express bus runs 24/7 between the port and Athens International Airport. Other public buses connect Piraeus with its outlying suburbs, the southern coastal zone and with central Athens. Port of Piraeus The Port of Piraeus is the largest Greek seaport and one of the biggest in the Mediterranean Sea and Europe. The Port of Piraeus served as the port of Athens since ancient times. Today, the Port of Piraeus is a major employer in the region and is operated by the Piraeus Port Authority S.A. (PPA). With about 18.6 million passengers Piraeus was the busiest passenger port in Europe in
Piraeus-Perama light railway at Methonis street, allowing freight trains to access Keratsini Port. At Keratsini a short branch was constructed leading to one of the jetties. Due to serious damages on infrastructure and rolling stock caused by Allied bombing of Piraeus on 11 January 1944 the line paused service until April 1945. Most of its time the line was exploited with two kind of regular services: one full length service from Piraeus to the Naval Base, running every 15 minutes with two car formation of the rolling stock (line number 4) and in between, 7,5 minutes after, a short service from Piraeus to