Flights Chiang Mai to Kathmandu (CNX-KTM): Airlines, THB Fares

Flights Chiang Mai → Kathmandu (CNX-KTM) — THB Fares, Airlines, Frequency

Chiang Mai to Kathmandu links northern Thailand directly with Nepal, sparing travellers from the country’s north a connection through Bangkok. The route carries Thai Buddhist pilgrims bound for Nepal’s sacred sites, trekkers heading for the Himalaya, and travellers with study or family ties between the two regions. At around 2 flights a week, it is a low-frequency, plan-ahead route.

Block time is close to 3.4 hours. With so few weekly departures, demand and availability matter more than usual — the route works best for travellers who can fix their dates early rather than those needing flexibility.

Airlines on this route

Nepal Airlines operates Chiang Mai–Kathmandu. As the single carrier on the route it sets the schedule and the cabin. The main practical constraint is the low frequency: with roughly two departures a week, there is little room to adjust dates, so the seat needs to be planned around the schedule rather than the other way round. Travellers carrying trekking gear or pilgrimage luggage should check the baggage allowance when booking.

THB fares

With only a couple of flights a week, CNX-KTM fares respond sharply to demand, and the autumn and spring trekking seasons together with the cooler-month pilgrimage period are the busiest. For those windows, eight to twelve weeks of lead time is sensible. Outside them there is more room. Because the route is small and infrequent, securing a seat early generally matters more than waiting for a marginally lower THB fare.

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About Kathmandu

Kathmandu, in its hill-ringed valley, is Nepal’s capital and the entry point for nearly every trip into the country. The valley is dense with temples, stupas and old royal squares, several UNESCO-listed, and the great stupa of Boudhanath is a focus for Buddhist travellers. Beyond the city it is the staging post for the Himalayan trekking regions. For travellers from Chiang Mai and the Thai north, the direct link makes Nepal’s pilgrimage sites and mountains reachable without the detour south to Bangkok.

FAQ

Which airlines fly Chiang Mai to Kathmandu? Direct CNX-KTM flights are operated by Nepal Airlines. Compare baggage allowance, fares and schedules in the carrier table above.

How long is the CNX-KTM flight and how often does it run? Block time is about 3.4 hours. The CNX-KTM route runs roughly 2 flights per week across all carriers.

How far ahead should I book CNX-KTM for the best fare? Booking 4-8 weeks ahead for regular dates, and 10-14 weeks for peak periods (Songkran, New Year, Hajj/Umrah season), typically saves 15-30%. See the month-by-month fare heatmap above.

What is the checked baggage allowance on CNX-KTM? It varies by carrier and fare class — full-service carriers on this route usually include 20-30 kg, while low-cost carriers sell it as an add-on. Confirm the current policy on the airline’s site before booking.

Do Thai passport holders need a visa for Nepal? visa-on-arrival 30 days. Check the latest requirements with the embassy or mfa.go.th before booking.

Related routes

• CNX airport
• KTM airport