Vistara has announced flights from Delhi to London Heathrow as part of the special bilateral travel bubble. The flights have been scheduled to operate from August 28 to September 30. The carrier will fly thrice a week every Monday, Wednesday, Friday. As per the schedule, the Delhi-London flight takes off at 0255 hrs and arrives in Heathrow at 0655 hrs and on return, the flight leaves London at 1535 hrs and lands at Delhi&rsquos IGIA at 0415 hrs the next morning, according to the airline&rsquos statement.