Cheapest one-way flights from Kolkata to Kathmandu in September from 138€

Best time to book flights for Kolkata (CCU) to Kathmandu (KTM) flights at AirHint

AirHint found the following cheapest one-way flights from Kolkata (CCU) to Kathmandu (KTM) in September 2025 (see full year).

One-Way flights

21 Sep Air India
19 Sep IndiGo
23 Sep Air India
26 Sep IndiGo

Also check the deals for return flights from Kolkata to Kathmandu in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu