Both the airlines have also waived ticket rescheduling and cancellation charges.
Civil Aviation Minister K Rammohan Naidu held an urgent meeting with all airline operators and issued a strong advisory against surge pricing on the Srinagar route.
Airlines have been directed to maintain regular fare levels, ensuring that no passenger is burdened during this sensitive time, an official release said on Wednesday.
Terrorists struck at a prime tourist location in Pahalgam in south Kashmir on Tuesday, killing at least 26 people, mostly tourists, and injuring several others.
The attack has caused fear among the tourists and many of them are planning to return back to their homes.
Baisaran, which is also known as mini Switzerland, can only be reached on foot or through horses. There is no motorable road to the tourist destination.
Two foreigners, one each from UAE and Nepal have also been killed in the attack.
Among the dead tourists include Indian Navy officer, Lieutenant Vinay Narwal and Karnataka businessman Manjunath Rao, who was from Shivamogga.