The total budget is NPR 45,900 about 20,000 Pesos (USD 428). Most of this amount is spent on air ticket. You will surely spend a lot less if you book your flight 3 or more months earlier.
Route Mode * Travel Time Amount
Kuala Lumpur to Kathmandu Air Asia +20kg 4.5 Hours 17,250.00 Airport to Hostel Taxi 30 Minutes 800.00 Thamel to Airport Taxi 30 Minutes 600.00 Kathmandu to Kuala Lumpur Air Asia +20kg 4.5 Hour 21,850.00
30 Days Tourist Entry Visa USD 40.00
Tourist Visa for Filipinos and citizens of most countries is available upon arrival at Tribhuvan International Airport, Kathmandu. No other supporting document is required. There are kiosks where you can electronically fill out the application and have your photo taken. I traveled in March 2016 and there were very few tourists at that time. Immigration Officers are quite nice unlike in most Asian countries where they just give you a blank face.
Visa fee is USD 25 for 15 days, USD 40 for 30 days and USD 100 for 90 days.
Three nights at Famous House Kathmandu Youth Hostel 900.00
This very cozy budget hostel is located just few minutes walk from Thamel area. It is cheaper when you book in Agoda (NPR 300), you will have to pay NPR 500 per night at the reception without the booking.
Garden of Dreams 200.00
There are so many restaurants in Thamel you can choose from depending on your budget or craving.