There are no extra charges on the flight bookings through TravClan, as the fares visible on the portal are Net Fares.
However, if you’re making a payment for the booking through Debit or Credit card, or some other mode of payment (other than NEFT, IMPS, UPI and Net Banking), a payment gateway charge of 2% will be applicable on the amount. The extra charges here are paid to the payment gateway for its services.