In 1949 Lechia played in the top flight for the first time. It was not a season to be enjoyed by Lechia however, winning only 4 games all season and losing an incredible 15 times out of 22 games. Lechia found themselves back in the second tier of Polish football in 1950, however, their stay was to be short as the team once again won their district championships and won the promotion playoffs, ensuring that Lechia would be playing in the Ekstraklasa again.