Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chennai to Mongolia as you normally would.
Related info for your journey
Useful info, stats and facts about Chennai to Mongolia flights.
Most people fly from Chennai (MAA) if they book a flight from Chennai to Mongolia. Chennai is conveniently located just 16.5 km from Chennai’s city centre.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chennai Airport to Ulaanbaatar Chinggis Khaan Airport flight would often be abbreviated as a MAA to UBN flight. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Ulaanbaatar Buyant Ukhaa Airport (ULN), Moron Airport (MXV), Ulaangom Airport (ULO), Khovd Airport (HVD), Dalanzadgad Airport (DLZ).