A trip to Pangong Tso is absolutely must do no matter how short your trip to Leh Ladakh is. A trip to Pangong Tso ideally should be done over two days so that you can sea the beauty of a sunrise over the lake and sunset as well however a trip to Pangong Tso can be done in a day too.
All you have to make sure is that you leave Leh as early as possible to reach the lake before noon so that you have some time at least to spend at the lake to enjoy the beautiful panorama. You will have to leave Pangong Tso before evening so as to cross Chang La pass without it being too dark.
Glimpse of Leh
If you are very short on time and still want to see Leh Ladakh there are a few places which you should see that can give you a feel of having visited Leh Ladakh. Even to do so you would need atleast three nights stay in Leh.
Apart from local sightseeing in Leh town you would be able to visit Pangong Tso and Khardung La top if you at least have three nights and four days. You would have to do a day trip to Khardung La and another day trip to Pangong Tso.
Leh Main Bazaar
The best place for shopping is Leh main baazar where you can have finest of cuisines and shop for variety of accessories, woollens and other memorabilia. Leh main bazaar is the busiest place in leh Ladakh.
There are a few places in Leh town which you should absolutely visit during your stay in the town. The Khar which houses the Leh palace Tsemo Castle and Namgyal Gompa on the same hills and Shanti Stupa built on a hilltop in Changspa region of Leh are two places one must visit. There is much more to see in Leh town however if you visit these two places you wont be left with a lot of time.
Khardung La, highest motorable pass is a place that can give you a faint feel of being on top of the world which one should not miss out on. You could also have your photograph clicked next to the BRO board which states that you are standing on worlds highest motorable pass! Khardung La is the gateway to Nubra and Shyok valleys but you would need more time to visit these places.
East of Leh towards Manali on Manali – Leh Highway, monastery tour in Leh town includes a day trip to Shey Palace, Thicksey monastery, Hemis monastery, and Stakna Monastery. Depending upon the time in hand, you can also choose to visit Matho monastery and Stok Palace.
Sham Valley Tour
Sham Valley tour includes Magnetic Hills, Zanskar and Indus River Confluence at Nimmu, Ruins of Basgo Palace and Basgo Plains, Alchi Monastery and Likir Monastery. If not all of these places you should atleast be able to visit Magnetic Hills & Nimmu in a half day trip.