Getting to Sopot is relatively easy is it is well connected by various types of communications. There is an airport in Gdansk about 20 Km from Sopot. It has connections to many airports in Europe. The small place is called Gdansk Rembiechowo and it a little far away from the center of Gdansk, but you simply ask for a connection to Gdansk.

For most the best choice would be flying to Warsaw (Warszawa) and taking plane to Gdansk. When you book with polish airline LOT to Warsaw from your country the price from Warsaw to Gdansk will be usually 50% off. There is also train from Warsaw to Sopot but it takes about 4 hours, one hour to get the station and it really does not come with real savings; you will be simply traveling for the rest of the day.

From Gdansk you can take bus to the station called Gdansk Wrzeszcz and from there a fast local train to Sopot. You can buy a ticket from bus driver and you have to punch it in small puncher, which you will find somewhere in the bus. The same with train ticket, you buy it at the station and on your way to the train you will find big yellow box on the wall, which is used to stamp the ticket. Remember to do this because there are very frequent controls on the bus and the train and the encounter with controller might be sometimes very unpleasant.

As you noticed reading about Sopot it is located between Gdansk and Gdynia, those cities have big ports. There is ferry service to many ports in the Baltic particularly to Sweden, Norway and some ports in Estonia and Lithuania.

Sopot, Gdansk and Gdynia have very good bus communication there is also street car and trolley bus and those cities are connected by fast local train. The other choice might be taking taxi to Sopot.