Trivandrum to Kathmandu flight guide — 1-stop routes, airlines, fares, baggage, terminals and Nepal entry for Indians.
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Quick answer: Trivandrum to Kathmandu non-stop flights take about ≈ 4–6h total, 1-stop via Bangalore (BLR) or Chennai (MAA); some seasonal non-stops, operated by IndiGo (via BLR/MAA), Air India, Nepal Airlines, No consistent non-stop — 1-stop via Bangalore or Chennai; seasonal charters possible. Check the visa requirement for your destination before you book. Use the live search above to compare today's cheapest TRV–KTM fare across every airline, OTA and travel agent in one place.
Last reviewed July 2026 by the FlightGPT flights desk · route facts cross-checked against DGCA and the Airports Authority of India (AAI) · how we collect fares · editorial policy · fact-checking · fares are live — verify the final price in search before booking.
Looking for cheap flights from Trivandrum to Kathmandu? FlightGPT compares live TRV to KTM fares across every connected source — Indian carriers, Gulf hubs, OTAs and trusted travel agents — and shows the cheapest options side by side. Whether you want a Trivandrum to Kathmandu non-stop tomorrow, a last-minute weekend deal or the lowest price three months out, every active Trivandrum-Kathmandu fare is one search away.
No carrier flies a same-plane nonstop between Thiruvananthapuram and Kathmandu, so all journeys connect. The most efficient routing is usually via Delhi, India's busiest gateway to Nepal, where IndiGo and Air India both feed onward Kathmandu services; Bengaluru and Mumbai connections also exist, and some travellers route via a Gulf hub on longer itineraries. IndiGo is the carrier you will most often see across both legs, frequently on a single ticket that protects your connection. Air India serves the network too. If you are planning the return, check the Kathmandu to Trivandrum direction, which uses the same hubs but can carry different timings and fares on the inbound legs.
Trivandrum to Kathmandu is roughly 2,800 km in a straight line, almost the full length of the subcontinent, so even via a hub it is a long day. A Delhi connection typically gives a total journey of about 7–10 hours: a roughly 3-hour northbound leg to Delhi, a layover, and a 1.5–2 hour onward flight to Kathmandu. Routings via Bengaluru or Mumbai, or via a Gulf hub, can stretch this to 12 hours or more. Because the connection drives the total, scrutinise the layover before booking. For perspective on the Kerala-to-north pattern, the Trivandrum to Delhi route is the building block of most KTM itineraries and a good fare anchor for the first leg.
Here is the good news that makes this trip far simpler than most international routes: Indian citizens do not require a visa to enter Nepal, and may travel on the strength of a valid passport or, in many cases, other accepted photo identity, under the long-standing open-border arrangement between the two countries. A passport is nonetheless the cleanest document to carry for air travel and is strongly recommended. There is no Nepal visa fee for Indians. That said, rules can be updated, so it is wise to confirm the latest accepted documents on our visa requirements guidance before you fly, and to carry proof of identity, return travel and accommodation in case of checks at either airport.
As a long connecting international route, fares blend two legs and vary widely. A through-ticketed TRV–KTM one-way commonly lands in an approximate ₹13,000–₹22,000 range, with the lower end available when you book several weeks ahead and accept a Delhi connection rather than a longer detour. Trekking season (March–May and September–November) and major Nepali festivals push fares up, as do Indian holiday peaks. Booking six to eight weeks ahead for peak-season travel is sensible. A self-built itinerary buying the legs separately can sometimes be cheaper but removes connection protection. Browse more domestic routes to price the Delhi or Bengaluru feeder leg independently if you want to compare against a through-fare.
On a single-PNR IndiGo international itinerary, allowances are usually more generous than domestic — often around 20–25 kg checked depending on the fare — and bags through-check from Trivandrum to Kathmandu. If a leg is on Air India, many fares allow around 25 kg. On a mixed-carrier single ticket the more restrictive leg's rules can apply, so confirm the through-allowance. The pitfall, as always, is self-connecting on separate tickets: bags will not through-check and you must collect and re-check at the hub, which is awkward on a short layover. Trekkers carrying heavy gear should pre-buy extra weight online, which is far cheaper than airport excess, and keep cabin bags within the 7 kg limit.
Trivandrum International Airport (TRV) is Kerala's southern gateway, with a domestic terminal (T1) and an international terminal (T2) close to the city; your international itinerary will typically use T2 or route via the domestic side depending on the first leg. Your connection will most likely be Delhi's Indira Gandhi International (DEL), a vast three-terminal airport where you will probably transit through T3, so allow time to move between gates. Kathmandu's Tribhuvan International Airport (KTM) is Nepal's main gateway, a single, often busy terminal in a bowl-shaped valley where approaches can be weather-sensitive. Morning flights into KTM are preferable, as afternoon clouds and wind in the valley more frequently cause delays.
Kathmandu and the wider Himalaya are best in the clear, dry windows of October–November and March–April, which coincide with peak trekking season and the most reliable mountain views — and, accordingly, the highest fares and busiest trails. The pre-monsoon spring brings rhododendron blooms; the post-monsoon autumn brings crisp visibility and the Dashain and Tihar festivals. The summer monsoon (June–August) is wet and cloudy with frequent flight delays into the valley. Winter (December–February) is cold but clear and quiet, suiting budget travellers who can handle the chill. From the Trivandrum end, the route is flyable year-round, but timing your trip to October–November or March–April rewards you with the best Himalayan weather.
On a long connecting journey, a single-PNR booking is the key safeguard: if the Trivandrum–Delhi leg slips, the airline rebooks you onward to Kathmandu free. A self-built itinerary on separate tickets leaves you to buy a fresh onward seat if you misconnect. Leave a comfortable layover — two hours or more — especially because Kathmandu's valley approach is weather-sensitive and onward flights can be delayed. International change and cancellation fees rise close to departure and depend on fare type, so a flexible fare suits travel on fixed festival or trekking dates. Use the airline app for live status, and prefer a morning arrival into KTM to dodge the valley's afternoon weather disruption.
No. There is no nonstop on TRV–KTM; all itineraries connect, most commonly via Delhi, with Bengaluru, Mumbai or a Gulf hub as alternatives. IndiGo and Air India carry most of this traffic across the two legs.
A Delhi connection typically gives a total of about 7–10 hours — roughly a 3-hour leg to Delhi, a layover, then a 1.5–2 hour flight to Kathmandu. Longer routings via Bengaluru, Mumbai or the Gulf can exceed 12 hours.
No. Indian citizens do not require a visa for Nepal and pay no visa fee, travelling under the open-border arrangement. A valid passport is the cleanest document for air travel; confirm currently accepted IDs before you fly.
IndiGo is the carrier you will most often see across both legs, frequently on a single connecting ticket via Delhi. Air India also serves the network. Mixed-carrier connections are possible, so check who operates each leg.
Off-peak months booked several weeks ahead are cheapest, often around ₹13,000–₹18,000 one-way via Delhi. Avoid the March–May and September–November trekking peaks and major Nepali festivals, when fares climb.
Yes on a single-PNR ticket — typically around 20–25 kg checked depending on the carrier and fare. On separate tickets you must collect and re-check bags at the hub, so leave a longer layover.
October–November and March–April offer the clearest skies and best mountain views, coinciding with peak trekking season. The June–August monsoon brings cloud and frequent valley delays; winter is cold but clear and quieter.
Delhi is usually the quickest and most frequent gateway to Kathmandu from Kerala. Bengaluru and Mumbai routings exist and sometimes price lower, while Gulf-hub options are longer. Compare on your dates for the best balance.
Kathmandu's airport sits in a bowl-shaped valley where afternoon clouds and wind more often cause delays. A morning arrival reduces weather-disruption risk, so favour early onward flights from your connecting hub.
FlightGPT is a natural-language flight search: ask the way you'd ask a friend, and it compares live TRV–KTM fares across every airline, OTA and travel agent. Try one:
There is no single "cheapest day" to fly Trivandrum to Kathmandu — the lowest fare is the one you find by comparing live. Open the search above to line up Trivandrum–Kathmandu prices across IndiGo (via BLR/MAA), Air India, Nepal Airlines; booking ahead and avoiding peak weekends typically trims 25–40 percent off the walk-up fare.
Flying Trivandrum to Kathmandu at short notice doesn't always mean overpaying. Off-peak departures and unsold seats on IndiGo (via BLR/MAA), Air India, Nepal Airlines can surface real same-week deals. Put your date into the FlightGPT search above and we'll show every available TRV–KTM fare side by side in seconds.
Most travellers prefer the Trivandrum to Kathmandu non-stop option. The direct Trivandrum-Kathmandu flight time is ≈ 4–6h total, 1-stop via Bangalore (BLR) or Chennai (MAA); some seasonal non-stops. If you are flexible, 1-stop alternatives through major hubs can be 15-30 percent cheaper. FlightGPT lets you filter by "Direct only" or compare both side by side — useful when you want the cheapest Trivandrum Kathmandu ticket but are open to a layover.
Trivandrum–Kathmandu pricing rewards comparison over loyalty: the best value rotates between low-cost and full-service carriers depending on the date. FlightGPT's grid surfaces every Trivandrum Kathmandu fare with baggage and meals counted in, so the genuinely cheapest all-in ticket is the one that rises to the top.