The admission came in a memo, written by the head of BA's Gatwick hub and seen by BBC News.
BA's Gatwick operation, which is currently suspended, is roughly a fifth as big as its Heathrow hub.
In the memo to Gatwick's staff, the company says:
"As you know, we suspended our Gatwick flying schedule at the start of April and there is no certainty as to when or if these services can or will return.Post Covid it is clear that the airline and travel industry will take quite some time to recover. Not least, because governments will most likely expect visitors from abroad to quarantine on arrival and airlines will be expected to practice social distancing in airports and on flights.
We need to ensure that our remaining operation is efficient, flexible and cost-competitive to enable us to survive in an increasingly lean and unpredictable industry."
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