There is an airport tax for international and domestic flights. NPR 1356.00 per person for departure to SAARC (South Asian) countries and NPR 1696.00 per person for departure to other international destination. But for Internal (Domestic) sector NPR. 170.00 per person.

This Airport Tax is equally applicable to Nepalese as well as non-Nepalese citizens flying from Nepal.

Tribhuvan International Airport is the only international airport in Nepal. Nepal Airlines - the national flag carrier of Nepal and other International Airlines operates direct flight to Kathmandu from Mumbai, New Delhi, Kolkata, Varanasi, Bangkok, Dhaka, Abu Dhabi, Doha, Dubai, Hong Kong, Munich, Karachi, Lhasa, Osaka, Shanghai, Guangzhou, Kuala Lumpur, Seoul, Vienna, Muscat, Bahrain, London, Paris, Frankfurt, Amsterdam, Paro, Sarjha.

The International Airlines operating their direct flight to Kathmandu includes: Nepal Airlines, Indian Airlines, Jet Airways, Air Sahara, Biman Bangladesh Airlines, China South-West Airlines, Air China, Druk Air, Royal Bhutan Airlines, Pakistan International Airlines, Thai Airways, Gulf Air, Qatar Airways, Austrian Air, Korean Air, GMG Airlines, Air Arabia and other airlines connecting to Nepal are Aeroflot Soviet Airlines, Air France, Air India, British Airways, Cathay Pacific, Dragon Air, Emirates Air, Euralil, Japan Airlines, KLM Royal Dutch Airlines, Kuwait Airways, Lufthansa, Northwest Airlines, Qantas Airlines, Royal Brunei Airlines, SAS, Saudi Arabian Airlines, Singapore Airlines, Transavia, United Arab Emirates, China Airlines, Delta Air, United Airlines, All Italia, Philippine Airlines.

Tourists are required to fill up disembarkation and embarkation cards upon their arrival and departure.

All baggage must be declared and cleared through the customs of the port of entry. Personal effects are permitted free entry. The duty on articles brought by the visitor varies according to the volume and value of the goods. A tourist may bring in dutiable goods, such as tobacco and liquors, within the prescribed quantity free of duty. Carrying narcotic, arms, ammunition are strictly prohibited.

Passengers arriving at Tribhuvan International Airport (TIA) without any dutiable goods can proceed through the Green Channel for quick clearance without a baggage check. If you are carrying dutiable articles, you have to pass through the Red Channel for detailed customs clearance.

Apart from used personal belongings, visitors are allowed to bring to Nepal free of duty cigarettes (200) or cigars (50), distilled liquor (one 1.15 liter bottle), and film (15 rolls). You can also bring in the following articles free of duty on condition that you take them out with you when you leave: binoculars, movie or video camera, still camera, laptop computer, and portable music system.

It is illegal to export objects over 100 years old (sacred images, paintings, manuscripts) that are valued for culture and religious reasons. Visitors are advised not to purchase such items as they are Nepal's cultural heritage and belong here. The Department of Archaeology at Ramshah Path near Singha Durbar has to certify all metal statues, sacred paintings and similar objects before they are allowed to be sent or carried out of the country.

Nepal Airlines operates an extensive network of air service in the interior parts of Nepal. It has scheduled connection flights from Kathmandu to TapIeJung, Bhadrapur, Rajbiraj, Bhojpur, Phaplu, Lukia, Lamidanda, Tunmlingtar, Rumjatar, Biratnagar, Simra, Janakpur, Ramechhhap, Bharatpur, Meghauli, Pokhara, Jomsom, Manang, Baglung, Bhairahawa Nepalgunj, Chaurjhahari, Surkhet, Dang, Dolpa, Jumia, Bajura, Baitadi, Dipayal, Darchula, Mahendranagar, Dhangadi, Tikapur and Sanfebagar. Beside Nepal Airlines other domestic airlines such as Yeti Airways, Gorkha Airlines, Sita Air, Buddha Air, Agni Air, Shangrila Air also provide regular and charter services to different popular destinations. Most domestic airlines fly modern Beech and Saab Aircraft.