Chennai to Kathmandu at a glance
The lowest fare our scanner has seen from Chennai to Kathmandu in the last two weeks is ₹15,058 (one-way) for Tue 9 Feb, about 64% over the usual price.
Of the months we have prices for, February is the cheapest and January the dearest.
The cheapest fares we see stop on the way, usually in Colombo, Bangkok and Hong Kong, and take from 9h 45m.
Kathmandu has its best weather from March to April and October to November.
Common stops: Colombo, Bangkok, Hong KongCheapest airlines lately: SriLankan, THAI, Cathay Pacific, Malaysia Airlines
Month by month: fares, weather and what's on
The cheapest fare our scanner has seen in each month over the last two weeks (one-way), with Kathmandu's weather and the dates that move prices. The live calendar at the top prices any month and trip length on demand.
| Month | Cheapest fare seen | Weather | Season | What's on |
|---|---|---|---|---|
| October 2026Best weather | Check live above | 24° / 15°rainy spells, 97 mm | Peak | DashainDussehra |
| November 2026Best weather | Check live above | 21° / 10°dry, 8 mm | Peak | DiwaliTihar |
| December 2026 | Check live above | 18° / 6°dry, 8 mm | Shoulder | Christmas and New Year |
| January 2027 | ₹29,707 one-way · Mon 18 Jan | 16° / 5°dry, 22 mm | Off-season | Christmas and New YearRepublic Day weekend |
| February 2027 | ₹15,058 one-way · Tue 9 Feb | 19° / 7°mostly dry, 27 mm | Off-season | Winter: near-freezing nights, clear days and quiet trails; high passes can be snowbound. |
| March 2027Best weather | ₹15,065 one-way · Wed 3 Mar | 22° / 10°some rain, 55 mm | Peak | HoliGood Friday weekend |
| April 2027Best weather | Check live above | 25° / 14°some rain, 77 mm | Peak | Indian summer holidays |
| May 2027 | Check live above | 25° / 16°wet, 241 mm | Shoulder | Indian summer holidays |
| June 2027 | Check live above | 26° / 19°very wet, 459 mm | Off-season | Indian summer holidays |
| July 2027 | Check live above | 26° / 20°very wet, 896 mm | Off-season | Monsoon: daily rain, landslides on mountain roads and cloud hiding the peaks. Flights... |
| August 2027 | Check live above | 26° / 20°very wet, 727 mm | Off-season | Monsoon: daily rain, landslides on mountain roads and cloud hiding the peaks. Flights... |
| September 2027 | Check live above | 26° / 19°very wet, 449 mm | Shoulder | Monsoon: daily rain, landslides on mountain roads and cloud hiding the peaks. Flights... |
Dates to plan around
Festivals and holidays in Kathmandu, and the rushes that push up fares out of Chennai.
- 11–21 OctDashainNepal's biggest festival: offices and many shops close around the main days (17-21 Oct), and buses and domestic flights are packed.
- 20 OctDussehraDussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week.
- 6–10 NovDiwaliDiwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up.
- 7–11 NovTiharNepal's festival of lights: marigolds and oil lamps everywhere, and many shops close for Laxmi Puja (8 Nov) and Bhai Tika (11 Nov).
- 19 Dec – 3 JanChristmas and New YearThe priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.
- 23–26 JanRepublic Day weekendRepublic Day falls on Tuesday 26 Jan: take the Monday off and it's a four-day weekend, so short trips abroad book up.
- 22–23 MarHoliHoli (22-23 Mar) and Good Friday (26 Mar) fall in the same week, a favourite week for short trips abroad, so fares rise.
- 26–28 MarGood Friday weekendGood Friday (26 Mar) makes a long weekend in India, just after Holi.
- 15 Apr – 15 Jun · expectedIndian summer holidaysSchool holidays (roughly mid-April to mid-June, varying by state): outbound family travel peaks and fares climb, especially to the Gulf, Southeast Asia and Europe.
- 27–31 OctDiwaliDiwali (Lakshmi Puja on Friday 29 Oct): the busiest travel week of the autumn. Fares out of India rise, and short trips abroad book up.
Good to know
What is the cheapest month to fly from Chennai to Kathmandu?
Of the months our scanner has priced, February 2027 is the cheapest: ₹15,058 (one-way) for Tue 9 Feb. Fares change daily; the live calendar at the top of this page prices every month on demand.
How long is the flight from Chennai to Kathmandu?
Among the cheapest fares we see, the quickest takes about 9h 45m with a stop.
Which airlines fly from Chennai to Kathmandu?
Recently the cheapest fares were on SriLankan, THAI, Cathay Pacific, Malaysia Airlines and flydubai.
When is the best time to visit Kathmandu?
The best weather in Kathmandu is from March to April and October to November. Spring: rhododendrons in bloom and Everest expedition season, with some haze in the valley. Peak season, with the most visitors and the highest hotel prices, is March to April and October to November. The quietest months are January to February and June to August.
How far ahead should I book Chennai to Kathmandu flights?
At least five weeks ahead. Recently, on Southeast Asia routes, fares under 2 weeks before departure ran 9% above what the same flights cost five to seventeen weeks out.
When do fares out of Chennai go up?
Dussehra (20 Oct): Dussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week. Diwali (6–10 Nov): Diwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up. Christmas and New Year (19 Dec – 3 Jan): The priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.