My advice is to not fly Delhi Paro unless you really have to. The Druk Air Flight is available not less than 3–4 months in advance. The economy fare will cost Rs 8,500/- A better way to travel to Paro would be to fly to Bagdogra, a return fare is easily available for Rs 15, 000/- with only weeks notice. Good Luck!!
You can directly check on the website of Druk Air or Bhutan Airlines. Flights are limited and hence they get sold out quick. We booked our tickets from Kolkata to Paro 11 months in advance (i.e. as soon as the booking opened)
U can compare the flights in many sites but i ll recommend u dont go directly paro from delhi. best option is delhi-bgdogra. u can get return flight with in 10k per person easily. after that u can hire a taxi for paro. on the way u ll get awesome views for photography. u ll enjoy more
Hi Niyati, there are direct flights from Delhi to Paro, you can find them here : https://www.tripoto.com/flights . Also if you are looking for a hassle free experience you can book a package to Bhutan with Tripoto