I've just been notified by my travel agent that our flights with AI from Delhi to Varanasi on March 18th have been cancelled and also our flight from Varanasi to Agra 2 days later.
They have now replaced the flights with Indigo for the to flight to Varanasi and the second flight has been replaced with an AI flight taking us back to Delhi where we will then travel by car to Agra.
No idea why! Time to practice going with the flow I think.