The easiest and fastest way to get Nepal is only through international airlines whose airport is located in it's capital, Kathmandu. There are few direct flights to Nepal, which means most travelers from Europe, North America and Australia have to change aircraft and/or airline en route. Another option is to fly directly to Delhi in India and then go in by land with a tour, visiting a bit of India on the way. Flights are also available from Lhasa, Tibet into Kathmandu. Its easy and fast to Get Nepal.
Traveling by land from India into Nepal can be an experience on it's own. There are three main entry points: Sunauli-Bhairawa, Birganj-Raxaul Bazaar and Kakarbhitta-Siliguri. The easiest way to cross them is by tourist buses from appropriate Indian cities. If you are flying into Delhi, you can enter Nepal quickly through the Mahendrenagar-Banbassa crossing, but the recommended route is to travel first to Varanasi in India, and there cross through Sunauli-Bhairawa.
The crossing between Nepal and Tibet via Kodari is open to organized groups but not to individual travelers, though this has been changing every month so contacting a Nepali based tour operator is strongly advised. Be prepared with alternative plans if you're thinking about using this route, because landslides regularly make it impassable during the monsoon.
Nepal Entry & Exit Points:
The entry and exit points for the purpose of the foreigners entering into and departing from the Kingdom of Nepal are following. The Immigration offices in such points are opened 24 hours. Entering and departing from other places except the point is treated as the voilation of Immigration Act and the Regulation.
Immigration Office, Tribhuvan International Airport, Kathmandu
Immigration Office, Kakarvitta, Jhapa (Eastern Nepal)
Immigration Office, Birganj, Parsa (Central Nepal)
Immigration Office, Kodari, Sindhupalchowk (Northern Border)
Immigration Office, Belahia, Bhairahawa (Rupandehi, Western Nepal)
Immigration Office, Jamunaha, Nepalgunj (Banke, Mid Western Nepal)
Immigration Office, Mohana, Dhangadhi (Kailali, Far Western Nepal)
Immigration Office, Gadda Chauki, Mahendranagar (Kanchanpur, Far Western Nepal)
Visitors arriving without any dutiable goods can pass directly through the Green Channel, without any baggage check. For declaration of dutiable goods visitors should pass through the Red Channel.
Duty Free Goods:
You are allowed to bring, free of duty, 200 cigarettes or 50 cigars, one 1.15 liter bottle of distilled liquor and 15 rolls of film. All electronic and optical equipment are allowed into the country with the condition that you leave with them.
It is illegal to export objects over 100 years old (sacred images, paintings, manuscripts) that are valued for culture and religious reasons. Metal statues, sacred paintings and similar objects have to be certified by the Department of Archeology for export.
Those flying within Nepal are required to pay Rs. 5000 as the airport tax.
Transport to City:
Taxi's are available at the airport for transport into the city. Rarely, taxis are not available (due to strike), then man powered cycle rickshaws will give you a warm welcome to local transport.
Nepal Time Difference:
Nepal time is 5 hours 45 minutes ahead of GMT and 15 minutes ahead of Indian Standard Time.