Traveling around the Tricity - Gdynia, Sopot and Gdansk - is very easy. The best option is taking SKM trains. They circulate every 10 minutes between 5:00 - 19:00 and less often before and after. You will get tickets in the ticket machines available on most of the platforms. English instructions are available as well as several other translations. Alternatively, you can buy tickets on the main stations - search for "Kasa biletowa" signs.
Trolleybuses, trams and buses are also available. Tickets are issued by Gdynia or Gdańsk. They allow you to travel within the given city plus Sopot. If you buy a ticket from Sopot, you need to choose the correct one to get either to Gdynia or Sopot.
PUBLIC TRANSPORT IN GDYNIA
PUBLIC TRANSPORT IN GDANSK