On 25th October 2020, Schönefeld Airport will become Terminal 5 of BER. Although Terminal 1 of the new Berlin Brandenburg Airport will be only be opening on 31st October 2020, the IATA code for the entire airport location will change with the start of the 2020/2021 winter flight schedule. SXF becomes BER.
It may be that passengers flying from Schönefeld in October take off from Schönefeld (SXF), but land at BER as the new code is applicable for all flights as of the 25th October (last day of the holidays in Berlin-Brandenburg) going from or to the Schönefeld location. The code ‘BER’ is already in the booking systems of the airlines or stored on booking platforms and will be shown on booking confirmations and tickets. In practice that means: while the city code BER was previously used for all airports in the Berlin-Brandenburg airport location and travellers were able to search for flights from Schönefeld and/or Tegel, the code will be explicitly assigned to the Schönefeld location from 25th October 2020. The three-letter code SXF will disappear.