Leave travel Allowance covers for expenses incurred for travelling when on leave and in India.
LTA exemption is available for 2 journeys and can be claimed only twice in a block of 4 years. The block applicable for the current period is calendar years 2018-21.
To avail of the tax break, submit the boarding passes in case of flights, travel tickets and bills to your company. You can see the total allowance you've received in your Form 16.