Hi, you can reach Amarnath Yatra from Delhi by air, road, or train, so here is how to can get there by the mentioned modes of transport.
By Air: The nearest airport to Amarnath is Srinagar Airport. You can take a flight from Delhi to Srinagar and then take a taxi or bus to Pahalgam, which is the base camp for the Amarnath Yatra.
By Train: The nearest railway station to Amarnath is Jammu Tawi Railway Station. You can take a train from Delhi to Jammu Tawi and then take a taxi or bus to Pahalgam.
By Road: You can also drive to Amarnath from Delhi. The road journey is long and arduous, but it is a scenic route.
Make sure you get a permit from the Shri Amarnath Shrine Board before you can start your journey, without this you will not be able to start the yatra.