STORY: Heathrow Airport is predicted to have an uncertain next few months.The west London hub said its growth was lagging behind its European rivals as track slots were full.England’s largest airport served 6.6 million passengers in March.That’s up nearly 7% from a year ago as it reroutes traffic flows to cope with airspace closures in the Middle East.The airport’s CEO said it was doing all it could to support airlines and passengers as travel trends changed during the Middle East crisis.The UK government approved plans for a third runway for the airport last year.However, due to a broader planning process that is expected to take years, it is not expected to become operational until at least 2035.Heathrow warned in February that Istanbul would overtake Istanbul as Europe’s busiest hub this year or next.Middle East routes have fallen by more than half, the airport said…Asia-Pacific and African traffic increased by 31% and 23% respectively.British Airways, the UK’s flag carrier and highest-grossing airline, announced last week that it would cut flights to the Middle East when services resume…While adding capacity to India and Africa.