Lufthansa CityLine is a German airline. It’s a subsidiary of the Lufthansa, and one shouldn’t mistake one for the other. ‘CityLine’ was initially founded as ‘Ostfriesische Lufttaxi’, then renamed to ‘Lufttransport’ and eventually turned into ‘OLT Express’ in 2011. 2 years later, it was transformed into ‘Lufthansa CityLine’.
Their oldest logo was a red wordmark ‘OLT’ (short for ‘Ostfriesische LuftTaxi’, and then ‘Ostfriesische LuftTransport’). The letters were visibly tilted to the right, moderately round, but still sharp in the corners. To the right, there was usually a black, abrupt outline of a bird used as an emblem.
The ‘OLT Express’ logo uses a similar acronym, except without the tilt and with even rounder shapes. They also added the word ‘Express’ to the right from the acronym in exactly the same style. Lastly, there was a white arrow put inside a red circle, and it was used as an emblem for the airline in many cases.
In 2013, OLT turned into Lufthansa CityLine. They adopted the contemporary design of the Lufthansa logo with the addition of the word ‘CityLine’ in a similar dark blue style as the rest of the wordmark was like at the moment.