Air Antwerp made this announcement:
Further to the decisions of the National Security Council of March 27 and the announcement earlier this week by London City Airport that the airport expects to remain closed until the end of April, Air Antwerp will resume operations on the route on Monday, May 4, 2020. The airline had already suspended its operations temporarily as of March 22.
Passengers who hold an Air Antwerp booking (WP code) on a flight between now and May 3rd‚ can change or cancel their reservation free of charge by contacting Air Antwerp Customer Services (contact details see below). If the booking was made via our codeshare partner (KL code)‚ the passengers must contact KLM. Please note that booking change requests via social media cannot be handled.