30% Off on Domestic Flight

WWW.MAKEMYTRIP.COM AXIS BANK OFFER 30% OFF ON CARD SPEND OF Rs. 5000
Coupon Code: (1) MMTWED (2) MMTWEDPR
Valid Till: Between 16:00 hrs to 23:59 on every Wednesday till and including 26 Sep. 2018
Only on: MMT Mobile site and Android & iOS App

Get Rs. 1499 Cashback to card on Domestic Flight bookings (on minimum card paid amount of Rs. 5,000)

Coupon Code :: MMTWED Rs. 1499 cashback for MMT Black Members (Free Subscription) and Rs. 1299 for others :: All Axis Bank Cards

Coupon Code: MMTWEDPR :: Axis Bank Selected Cards: Select,Vistara Vistara Signature, Vistara Infinite, Reserve,Privilege Credit cards & Burgundy ,Wealth,Privee,Priority Debit Cards customers only)

Refer https://www.makemytrip.com/promos/axis-df-03072... for detailed terms

WWW.MAKEMYTRIP.COM PAYPAL OFFER RS. 800 ON MINIMUM OF RS. 3000 . ALMOST 26% OFF.
Pay using PayPal wallet and get Rs. 400 instant discount and Rs. 400 cashback to your MMT wallet
Payment to be done through PayPal India account.
Coupon Code: MMTPAY
Offer vaild till 30 Sep. 2018. Only 1 booking per email id basis.
This offer is valid on a minimum booking amount of Rs 3,000 (excluding convenience fee and any ancillaries purchased eg: meals, insurance)
Refer https://www.makemytrip.com/promos/paypal-df-280... for detailed terms

WWW.YATRA.COM AMAZON PAY FLAT 20% DISCOUNT – NO MINIMUM BOOKING AMOUNT
Flat 20% Off (max. Rs.1,500)

Half of this is in the form of discount and half of this is in the form of cashback to Amazon Pay.
Flat 10% instant OFF (max Rs. 750) and Flat 10% cashback in Amazon Pay wallet (max Rs. 750)

Coupon Code: AMZYT18

Validity till: 16 Sep. 2018

Refer https://www.yatra.com/offer/details/flights-off... for detailed terms

WWW.MAKEMYTRIP.COM CITIBANK OFFER FLAT 15% CASHBACK TO CARD ON MINIMUM AMOUNT OF RS. 3000
Flat 15% cashback to card up to INR 1,500
Coupon Code: MMTCITI
Valid Till: 14 Sep. 2018
Payment to be done through Citibank credit card only (other than corporate cards)
Refer https://www.makemytrip.com/promos/df-citi-12092... for detailed terms.

WWW.PAYTM.COM CITIBANK OFFER FLAT 20% OFF MINIMUM BOOKING OF RS. 5000
Minimum ticket value of INR 5000 excluding any ancillary purchased (meals, insurance etc.)
Coupon Code: FLYCITI
Valid Till: Every Thursday
First eligible transaction per card per Thursday during the Offer Period
Payment to be done using Citibank Debit Card & Credit Cards (corporate cards excluded).
Refer https://paytm.com/offer/flight-tickets/fl...i/ for detailed terms

WWW.YATRA.COM PAYPAL OFFER VALUE UPTO 26%
Coupon Code: YTPAYPAL
Valid Till: 16 Sep. 2018
Payment to be done using PayPal.
Booking Value Based Offer
Rs.2,500 – Rs.3,999 Save Rs.650 ( Rs.250 Instant discount + Rs.400 Instant cash back in Paypal wallet)
Rs.4,000 – Rs.5,999 Save Rs.800 ( Rs.300 Instant discount + Rs.500 Instant cash back in Paypal wallet)
Above Rs.6,000 Save Rs.1,000 ( Rs.500 Instant discount + Rs.500 Instant cash back in Paypal wallet)
Refer https://www.yatra.com/offer/details/yatra-paypa... for detailed terms

WWW.GOIBIBO.COM PAYPAL OFFER RS. 800 CASHBACK ON MINIMUM BOOKING OF RS. 3000
Coupon Code: Not Required
Valid Till: 31 Dec. 2018
Payment to be done through PayPal.
Cashback will be received in PayPal account (100% usage).
Refer https://www.goibibo.com/offers/flight-p...l/ for detailed terms

WWW.GOIBIBO.COM EXTRA RS. 100 GOCASH BENEFIT+
Over & Above Exclusive Discounts
Use 100% of this goCash+ on Future Bookings
No promocode required
Dom Flights : Flat 5% upto INR 100
No Min Booking Value
Cashback to be credited post travel
Applicable for logged-in users
Refer https://www.goibibo.com/offers/transactional-ca... for detailed terms

WWW.GOIBIBO.COM YES BANK RS. 1299 DISCOUNT OFFER ON MINIMUM BOOKING OF Rs. 5000
Instant Discount of INR 1,299 on min. booking of INR 5,000 (excluding convenience fee and any ancillaries purchased eg: meals, insurance.) paid through YES BANK Credit card payments
Copoun Code: GOYES
Valid Till: Every Thursday Till and including 27 Sep. 2018
Minimum Booking: Rs. 5000
Refer https://www.goibibo.com/offers/yes...k/ for detailed terms

WWW.PAYTM.COM RS. 1000 FLAT CASHBACK
PayTM Final Call Sale
Only on 19 Sep. 2018
Register at https://paytm.com/offer/flight-tickets/final...l/ to get Flat Rs. 1000 Cashback – prior registration is mandatory
Valid only on Sep 19 through the Paytm wallet linked with mobile number used for registration
Only one ticket per mobile number / per paytm account (as per past experience)

I don’t know if any of the above offers has been posted earlier. I have put in lot of time and effort and my present post gives a comparative and single window holistic view of some of the best deals on domestic flights booking. You can choose the offer which suits your requirement.
All the best !!