[3] Lechia's greatest success in the top flight came during the 1950s, when the club finished 3rd during the 1956 season.

After a spell back in the top flight, Lechia soon found themselves playing in the lower divisions once more.

During the 1995 season, Lechia had previously been part of another merger, this time with Olimpia Poznań to create Olimpia-Lechia Gdańsk.

The highest the team has achieved since the turn of the century was 2 seasons in the third division, finishing 14th and 16th from 2012 to 2014.

After having to start from the bottom, Lechia's fortunes changed and they found themselves playing in the Ekstraklasa once again for the 2008/09 season.

[10] After 11 seasons of continuous top flight football Lechia won both the Polish Cup and the Polish SuperCup in 2019, leading to the team playing European football for only the second time in their history.

The 1998–99 kits were produced by Uhlsport with Pomorskie Towarzystwo Leasingowe being the sponsor on the shirts.

In 2000 Adidas became the manufacturer of the Lechia-Polonia kits, with Centertel being the main club sponsor.

Canal+ also held a minor sponsorship role, with a small logo also featuring on the front of the shirts.

In the last year of Lechia-Polonia's existence they played in the same Adidas kits as the season before.