Indigo - Pay with your Mastercard credit card onboard and get 20% off on food and beverages.

https://www.goindigo.in/campaigns/indigo-master...
IndiGo-Mastercard Promotion
Enjoy 20% off on food and beverages using Mastercard credit cards. Offer valid on purchases made on-board only.

Detailed Terms and Conditions of the offer:

Offer is valid only on Food & Beverage items available as part of inflight service on IndiGo’s Domestic Flights between 00.00 hours on 03rd May 2018 to 23.59 hours on 31st Aug 2018 (“Offer Period”).
Offer is valid on all valid Mastercard credit card transactions during the Offer Period.
This Offer is valid only on transactions made using Mastercard Credit Cards that are issued in India.
The Offer is not applicable on any merchandise sale available aboard IndiGo during the flight.
IndiGo or Mastercard will not be responsible for the fulfilment of this Offer in case of any inability to charge the card for any reason available aboard IndiGo.
IndiGo is not making any commitment to make any Offer beyond the Offer Period.
Such participation is voluntary and any person availing this Offer shall be deemed to have accepted these Terms and Conditions.
The Customer shall become ineligible to participate in this Offer if his/her card is cancelled before the expiry of /during the Offer Period..
IndiGo and Mastercard reserve the right to modify or change any of the terms and conditions applicable to this Offer at any time with/without prior notice to the Customer.
The Offer cannot be combined with any other offer and cannot be transferred or assigned to any other person/customer.
IndiGo and Mastercard acknowledge and agree that Mastercard will not be responsible or liable for the products being sold inflight by IndiGo.