https://paytm.com/offer/flight-tickets/paytm...d/
Use Coupon code : PAYTMAMEXD

Flat Rs 1,500 Cashback on domestic flight tickets booking.
Offer valid on website, m-site and app (Android & iOS)
Minimum booking amount to be Rs.7,500
The offer is valid from Dec 24th, 2018 to March 25, 2019, Travel dates are open.
Offer is valid only for American Express Bank Card members.
Offer is valid only on the first eligible transaction per card every Monday during the Offer Period.
This offer is not valid for American Express Corporate Cards or Network Cards issued by American Express Banking Corp.
Cashback will be calculated on the booking amount exclusive of convenience fee, insurance, free cancellation protection or any ancillaries purchased.
Offer is valid only if the entire booking amount is paid through American Express Card.
User has to apply the offer code “PAYTMAMEXD” in the promo-code section to be eligible for the offer.
This offer cannot be clubbed with any other offers already existing and valid on Paytm.
Cashback will be credited by 20th April 2019 into users American Express bank card.
Offer is applicable only on Domestic flight ticket booking.
To get Cashback, the user needs to have a verified mobile number on Paytm.
Cancelled orders will not be eligible for Cashback.
Paytm reserves its absolute right to withdraw and/or alter any terms and conditions of the offer at any time without prior notice.
For any card related claims, the customer shall approach the Bank and Paytm shall not entertain any such claims.