Delhi
Every non-stop on this sector leaves from Indira Gandhi International (DEL), and IGI splits departures across more than one terminal — which one you use depends on the airline and sometimes on the specific flight, so read the terminal off your ticket instead of assuming. The eastbound schedule is banked into a morning wave and an evening wave; those are the bands that sell out first and the bands where fares move fastest, particularly on Mondays, Fridays and festival weeks. If you are booking inside 72 hours, factor in the road time to the airport before you optimise for price: the flight you can physically reach beats the one that is ₹300 cheaper.