Tribhuban International Airport (TIA) is only international airport in Nepal. TIA has link with Europe , North America ,Gulf Countries , India , China , Bangaladesh , Thailand , & Bhutan .
Overland Entry to Nepal
You can enter to Nepal from these border towns
Foreigners generally enter as here ;
1)Travellers who travels to Dajeeling & Sikkim & eastern region of India & want to come to Nepal they enter through Kakadvitta
2) Travellers who would like to travel through Tibet enter through Kodari to Nepal
3) Travellers who visits Varanasi in India , & then combine Nepal would enter from Bhairahawa to Nepal
Entry points are as below:
It is advised to carry 2 passport sized photographs & minimum 6 months valid passport. You can make ready of the USD cash change US $ 25 for 15 days Visa, US$ 40 for 30 days Visa &US$ 100 For 90 days Visa
There could be a long list of the customs. Generally it is given most significant ones here .