T & c :-
15% discount is applicable on base fare in Economy
on select flights within India* operated by Jet
Airways

Applicable on one way journey only 
Valid for travel on Tuesday only 
Tickets must be purchased on or before Oct 15,
2015 
Travel must commence and the entire journey must be
completed on or before Oct 15, 2015 
Child discount is not permitted 
Date change is permitted at a charge of INR 3,000 
Tickets purchased under this offer are non-
refundable 
Discount is applicable on select booking class – O and W 
Limited seats available on a first come, first serve basis 
This offer is not applicable if booking is done using the
Multicity option Jet Airways reserves the right at any
time, without prior notice to add, alter, modify, change or
vary all or any of these terms and conditions or to replace
wholly or in part, the above offer by another offer,
whether similar to above offer or not, or to withdraw it
altogether
*Applicable on select flights

http://www.jetairways.com/EN/IN/planyourtravel/book-online.aspx