Hey Sakshi, If you are starting from Rishikesh and you wnat to complete both spiti and leh, then you would need around 25 k ... well, the exact number of cost can't be presumed ... this will be the minimum you need including food and stay also ... So, from Rishikesh you need to take a bus to Manali first ... and then from manali to kaza ... in kaza you can have 3 days for you to see around ki, kibber, gete, tashigang, chicham and Few more remote villages ... and then two more days if you are interested to check out Parvati valley also ... for that you need to visit mudh Village from kaza ... buses are dre ... If you have an ample of time, then I would suggest you to take a bus to Shimla first from Rishikesh and then go to Chitkul the last village in India and China border and from there to Kaza and come out of spiti valley via ROHTANG pass to marhi ... From marhi you can take a bus to Keylong jispa Sarchu and then to leh ... you do have a direct bus also to leh ... so no need to worry ... Again, no confirmation on money part ... but if you seriously need to cover all lot of spiti valley ... parvati valley... lahaul valley and also leh and surroundings... you would for sure keep 3 weeks with you and your bag packed light ... If you just wanna see and go around kind of ... then you will need 2 weeks ... one in spiti and the other in leh ... also see that almost every place i have mentioned abobe has public transportation ... for your information I have been on a spiti ride last year and here is the link for the sme about the spiti valley :- https://www.tripoto.com/trip/3-guys-2-bullets-1-epic-and-adventurous-bike-ride-of-a-lifetime-to-spiti-valleybestof2018-5c2a6cfc1ed5f Happy and safe Travelling!!!
I have travelled the spiti to leh route and it doesn't cost me much. I completely relyed on public transport. From spiti at around 4 am there is a bus to Manali. Take that bus and get down at gramphoo or rotang pass. From there you will get direct leh bus.. according to me.. u can complete it in around 5k.. pm me for queries
You can go via Manali to leh from spiti. Or there is place in between manali and keylong i.e Gramphu from where you can get bus directly to keylong when you go from spiti to manali, and then from keylong to leh, there is direct bus.
If u r solo traveller so budget would be for spiti and leh around 20k to 30k but its completely depend on you.
you will have to start your trip as this itinerary
day 1 shimla
day 2 kalpa day 3 tabo
day 4 kaza
day 5 and 6 key kibber chicham langza hikkim komik dhankar etc
day 7 chandrala stay
day 8 sarchu
day 9 leh
day 11 leh city visit day 12 leh to khardunglaa pass and stay at diskit or hunder
day 13 turtuk the last northern point of india and thang
day 14 turtuk to pangong lake via shyok route
day 15 pangong to tso moriri if intrested or lamayuru
day 16 lamayuru to drass
day 17 drass to srinagar
day 18 srinagar to home by flight or bus whatever possible its long itinerary but you can change according to your requifement