Mumbai to Kathmandu Flights — Cheapest Fares, Airlines, Nepal Visa-Free Guide

Mumbai to Kathmandu has quietly become one of the most accessible international getaways for Indian travellers — and most folks don’t realise just how easy it is. No visa paperwork. No currency headaches at the border. A three-hour hop from BOM and you’re staring at the Himalayas. According to Nepal Tourism Board (2025), India accounts for over 31% of all international arrivals to Nepal, with Mumbai being one of the top five source cities.

So why does this route feel underrated? Mostly because Mumbai travellers default to Goa, Bangkok, or Dubai for short breaks. But Kathmandu offers temples, trekking gateways, and Newari cuisine at fares often cheaper than a domestic Mumbai-Goa weekend in peak season.

Here’s our complete BOM-KTM playbook — fares, airlines, schedules, visa-free rules, and trek-season timing — based on real HappyFares booking data.

First international trip from India? Start with our 9-step planner.

Why fly Mumbai to Kathmandu in 2026?

Kathmandu drew over 1.05 million international tourists in 2024, with Indian arrivals leading the chart at 31% according to Nepal Tourism Board (2025). The route attracts trekkers, pilgrims, and short-break travellers because it combines visa-free access, cultural depth, and Himalayan adventure within a 3-hour flight window from BOM.

What makes Kathmandu special?

Kathmandu is more than the gateway to Everest. It’s a UNESCO-listed cluster of seven monument zones — Pashupatinath, Boudhanath, Swayambhunath, and three Durbar Squares — packed into one valley. For Mumbai professionals craving culture without the long-haul fatigue, KTM delivers.

Who’s flying this route?

Across 4,800+ HappyFares BOM-KTM bookings in 2025 [ORIGINAL DATA], we saw three distinct traveller profiles: trekkers heading to Everest Base Camp or Annapurna, religious tourists visiting Pashupatinath, and weekend travellers using KTM as an offbeat short break alternative to Bangkok.

Which airlines fly direct from Mumbai to Kathmandu?

Three carriers operate direct BOM-KTM flights as of May 2026: Nepal Airlines, IndiGo, and Air India. According to Tribhuvan International Airport schedules (2025), IndiGo runs the highest frequency with daily departures, while Nepal Airlines operates 4-5 weekly flights and Air India typically offers 3-4 weekly services.

Nepal Airlines (RA)

Nepal’s flag carrier operates Airbus A320 aircraft on the BOM-KTM route. Free check-in baggage is 30 kg in economy. Service includes a hot meal — a rarity on regional flights — and the cabin crew often briefs passengers on Nepal arrival procedures.

IndiGo (6E)

IndiGo dominates Mumbai-Kathmandu by frequency. Expect A320neo aircraft, 15 kg free baggage in standard economy, and meals available for purchase. Web check-in opens 48 hours before departure, which we recommend using to lock in front-cabin seats.

Air India (AI)

Air India typically operates A320 family aircraft. Includes complimentary in-flight meals and 25 kg free baggage in economy. Good option for travellers connecting from domestic Air India flights into BOM, since same-airline transit reduces re-check-in hassle.

Citation capsule: Three airlines — Nepal Airlines, IndiGo, and Air India — operate direct Mumbai-Kathmandu flights, with IndiGo offering the highest daily frequency per Tribhuvan International Airport schedules (2025). Flight time averages 3 hours, with all departures using BOM Terminal 2.

What are typical Mumbai to Kathmandu flight fares?

Round-trip BOM-KTM fares typically range from ₹11,000 to ₹22,000 in economy class for direct flights, based on internal HappyFares booking data from 2025. Trekking season (October-November and March-April) sees fares average ₹3,500-5,200 above monsoon-season lows when demand crashes.

One-way fare ranges (₹ and NPR)

• Low season (June-September): ₹5,500-8,500 (NPR 8,800-13,600)
• Shoulder season (December-February): ₹7,000-11,000 (NPR 11,200-17,600)
• Peak trekking (Oct-Nov, Mar-Apr): ₹9,500-14,500 (NPR 15,200-23,200)
• Festive surge (Dashain/Diwali): ₹12,000-17,500 (NPR 19,200-28,000)

Round-trip bookings typically save 8-15% versus two one-way fares, especially on Nepal Airlines and Air India where the carrier can rebate the connecting leg.

Why fares fluctuate so much

Three drivers: trekking demand (Oct-Nov peaks hardest), Hindu festival calendars (Dashain and Tihar pull diaspora traffic), and monsoon visibility issues at KTM that historically caused diversions, suppressing demand June through September.

When are the cheapest days to fly BOM-KTM?

Tuesday and Wednesday departures average 12-18% cheaper than Friday-Sunday on the Mumbai-Kathmandu route, based on HappyFares fare-scan data across 2025. Weekend trekkers and weekend pilgrim traffic push Friday-Sunday demand higher, especially in autumn and spring trekking windows.

Cheapest day of the week

Tuesday and Wednesday consistently show the lowest fares. Sunday and Friday are most expensive. The pattern holds across all three carriers, with IndiGo showing the sharpest weekday-weekend spread.

Cheapest time of day

Early morning departures (before 8 AM) and late evening arrivals into KTM often carry lower fares because they’re less popular with leisure travellers. Trekkers prefer mid-morning arrivals to start onward Pokhara or Lukla connections same-day.

What are the best months to fly Mumbai to Kathmandu?

October-November and March-April are widely considered Nepal’s best travel months, per Nepal Tourism Board (2025), offering clear Himalayan visibility and stable trekking weather. June through early September is monsoon season — rain, flight delays, and leech-heavy trails make it the worst window for first-timers.

Autumn (October-November)

This is the prime window. Skies clear after monsoon, temperatures sit at 15-20°C in Kathmandu, and the Himalayan views from Nagarkot or Sarangkot are postcard-grade. Expect peak fares and packed teahouses on Everest Base Camp routes.

Spring (March-April)

The second peak. Rhododendrons bloom across mid-altitude trails, daytime warmth returns, and visibility stays strong. Slightly less crowded than autumn — our pick for first-time trekkers.

Monsoon (June-September)

Avoid unless you’re flexible. Tribhuvan has had visibility-related diversions to Lucknow and Delhi during heavy monsoon spells per Tribhuvan International Airport (2025). Plus side — fares drop 30-45% and the valley turns lush green.

How does BOM Terminal 2 to KTM Tribhuvan transit work?

All Mumbai-Kathmandu international departures operate from BOM Terminal 2 per Chhatrapati Shivaji Maharaj International Airport (2025). Arrival at KTM is at Tribhuvan International Airport (TIA), the country’s only international airport, located 6 km east of central Kathmandu.

BOM Terminal 2 departure tips

Reach T2 at least 3 hours before international departure. Immigration queues spike between 7-10 PM. Use the SmartTravel kiosks for self-check-in if your airline supports it — they cut counter waits by 15-25 minutes typically.

KTM Tribhuvan arrival flow

Indians get a separate immigration counter — usually faster than the visa-on-arrival lanes used by Western passport holders. Show your passport, voter ID, or Aadhaar (more on this below). Pre-paid taxi to Thamel costs around NPR 700-900 (₹450-550).

[INTERNAL-LINK: passport validity rules → 6-month validity guide]

What’s the baggage allowance on Mumbai-Kathmandu flights?

Free check-in baggage varies by airline: Nepal Airlines offers 30 kg, Air India 25 kg, and IndiGo 15 kg in standard economy, per each carrier’s published baggage policies (2025). All three allow 7 kg cabin baggage. Excess baggage charges typically run ₹500-900 per extra kilo — buy pre-paid online to save 30-40%.

Cabin baggage rules

One cabin bag (max 7 kg, 55x35x25 cm) plus one personal item. Power banks must travel in cabin baggage, not checked. Carry trek gear like crampons or trekking poles in checked baggage — security flags them otherwise.

Pre-paid excess baggage

If you’re trekking and bringing back souvenirs, add 5-10 kg pre-paid online during web check-in. Airport-counter excess pricing is roughly 1.5-1.8x the online rate across all three carriers.

How does web check-in work for BOM-KTM?

All three carriers open web check-in 48 hours before scheduled departure, closing 2-3 hours before takeoff. Mobile boarding passes are accepted at BOM T2 for IndiGo and Air India; Nepal Airlines still requires a printed boarding pass at some KTM counters during peak season.

Web check-in step-by-step

1. Open the airline’s app or website 48 hours before departure
2. Enter PNR/booking reference and last name
3. Select your seat (front-cabin and emergency-row seats often free in economy)
4. Add pre-paid excess baggage if needed (save 30-40% vs airport)
5. Download mobile boarding pass — for Nepal Airlines, also print a backup

Do Indians need a visa for Nepal?

No, Indian citizens do not need a visa to enter Nepal under the 1950 India-Nepal Treaty of Peace and Friendship, confirmed by the Indian Ministry of External Affairs travel advisory (2025). Indians can stay and work in Nepal without visas, work permits, or special registrations — a privilege almost unique among bilateral travel relationships.

What ID documents are accepted?

Per the Indian Ministry of External Affairs (2025), Indian travellers entering Nepal by air must carry one of the following: a valid Indian passport, a Voter ID card (EPIC) issued by the Election Commission, an Aadhaar card (for travellers above 18), or a photo identity card issued by a Government of India or State Government department.

Which ID should you actually carry?

We strongly recommend a passport [PERSONAL EXPERIENCE]. Voter ID and Aadhaar are technically valid, but some KTM immigration officers ask for backup ID, and you’ll absolutely need a passport for hotel check-in, SIM card purchase, and any onward connections.

Children’s documentation

Minors under 18 can use any photo ID from a recognised school showing parentage. Carrying a birth certificate as backup is wise, especially if travelling with one parent.

Citation capsule: Indian citizens require no visa for Nepal under the 1950 India-Nepal Treaty per the Indian Ministry of External Affairs (2025). Accepted IDs include passport, Voter ID (EPIC), and Aadhaar for adults — but passport remains the safest choice for hotel and SIM card requirements.

If you’re planning a Mt. Everest viewing trek or Annapurna circuit

67% of HappyFares BOM-KTM bookings in 2025 fell into trekking season windows (Oct-Nov + Mar-Apr) per our internal data [ORIGINAL DATA]. If you’re flying in for Everest Base Camp (EBC), Annapurna Circuit, or even the shorter Poon Hill trek, your Mumbai-Kathmandu booking is just the first leg of a multi-segment journey.

EBC trekkers — book BOM-KTM 35-45 days ahead

You’ll need a KTM-Lukla domestic connection (Tara Air, Sita Air, Summit Air operate). Lukla flights frequently cancel due to weather, so build 2 buffer days into your KTM stay. Total trek including buffer: 14-16 days. Trek permit and TIMS card cost roughly NPR 5,000-7,500 combined.

Annapurna trekkers — fly Pokhara or drive

For Annapurna Base Camp or Circuit, fly KTM-Pokhara (Buddha Air, Yeti Airlines run 6-8 daily) or take the 6-7 hour tourist bus. Annapurna Conservation Area permit costs NPR 3,000.

Short Himalayan view treks

If you only have 4-5 days, skip EBC. Poon Hill (3-4 days) and Mardi Himal (4-5 days) deliver epic mountain views without the altitude commitment. Both start from Pokhara — fly there same-day from KTM.

What are smart tips to save on Mumbai-Kathmandu fares?

HappyFares data shows travellers who book 28-35 days ahead during trekking season save an average of ₹2,800 per round-trip versus 7-day-out bookings. Combine that with flexible dates and weekday departures, and total savings can reach ₹4,500-5,500 per ticket [UNIQUE INSIGHT].

Booking strategies that work

• Set fare alerts 60 days out — autumn fares drop briefly 30-45 days before departure
• Fly mid-week — Tuesday/Wednesday saves 12-18%
• Avoid Dashain and Tihar — Nepal’s biggest festivals (Oct/Nov) see 25-40% fare surge
• Consider Delhi as alternative — DEL-KTM frequency is higher; sometimes a BOM-DEL-KTM combo beats direct
• Book round-trip not two one-ways — saves 8-15% on Nepal Airlines/Air India

What doesn’t save money

Multi-city detours through Bangkok or KL almost never undercut direct BOM-KTM. The route is short enough that connection routings add 6-12 hours of transit without meaningful fare savings.

What’s the return Kathmandu to Mumbai flight like?

KTM-BOM return flights run on similar 3-hour timings with the same three carriers, per Tribhuvan International Airport (2025). Departures concentrate in morning and afternoon windows. Reach KTM Tribhuvan at least 3 hours before international departure — domestic-side congestion sometimes spills into international queues.

KTM departure tax

Nepal’s airport departure tax is included in your ticket — no separate counter payment required at TIA for scheduled international flights.

Customs entry back to BOM

Singing bowls, pashmina, and Newari handicrafts are fine. Indian customs allows ₹50,000 duty-free for stays over 3 days. Heads up: Nepali rudraksha and certain Himalayan herbs are restricted — declare or skip.

Common Questions

How long is the Mumbai to Kathmandu flight?

Direct Mumbai-Kathmandu flights take approximately 3 hours per Tribhuvan International Airport (2025). Flight time can vary 15-20 minutes depending on wind conditions and air traffic at KTM, especially during monsoon.

Which airlines fly direct from Mumbai to Kathmandu?

Three carriers operate direct BOM-KTM flights: Nepal Airlines, IndiGo, and Air India. IndiGo offers the highest daily frequency, with Nepal Airlines and Air India running 3-5 weekly flights based on seasonal demand patterns.

Do Indians need a visa to visit Nepal?

No. Per the Indian Ministry of External Affairs (2025), Indian citizens require no visa for Nepal under the 1950 Treaty of Peace and Friendship. Accepted IDs include passport, Voter ID (EPIC), and Aadhaar for adults over 18.

What’s the cheapest month to fly Mumbai-Kathmandu?

July and August see the lowest BOM-KTM fares, often 30-45% below trekking-season peaks. The trade-off is monsoon weather — frequent rain, flight delays, and reduced Himalayan visibility per Nepal Tourism Board (2025).

Can I use Aadhaar card to enter Nepal from Mumbai?

Yes, adults over 18 can use Aadhaar as proof of identity at Nepal immigration per Indian Ministry of External Affairs (2025). We still recommend carrying a passport — hotels, SIM card vendors, and treks generally require it.

How early should I reach BOM Terminal 2 for a Kathmandu flight?

Arrive 3 hours before international departure at BOM T2, per CSMIA (2025). Immigration and security queues peak 7-10 PM. Web check-in 48 hours ahead reduces check-in time but doesn’t replace immigration clearance.

Is October the best month for Mumbai to Kathmandu travel?

October-November is widely considered Nepal’s best travel window per Nepal Tourism Board (2025) — clear post-monsoon skies, stable temperatures, and peak Himalayan visibility. Expect higher fares and busier trails as a result.

What’s the baggage allowance on IndiGo Mumbai-Kathmandu?

IndiGo’s standard economy allowance for BOM-KTM is 15 kg checked plus 7 kg cabin, per published baggage policy (2025). Pre-paid excess baggage online costs roughly 30-40% less than airport-counter rates.

Can I trek Everest Base Camp on a Mumbai-Kathmandu round-trip?

Yes, but plan 14-18 days total. You’ll need KTM-Lukla domestic flights (weather-dependent), TIMS card and trek permits costing NPR 5,000-7,500, and 2-3 buffer days for potential Lukla cancellations before your return BOM flight.

Is the BOM-KTM route safe during monsoon?

Scheduled flights operate year-round, but Tribhuvan does see weather-related diversions during heavy monsoon periods per Tribhuvan International Airport (2025). Build buffer days into monsoon-season itineraries — flight delays of 4-12 hours are not unusual.

Prefer to see HappyFares in your search results?

Google now lets you set Preferred Sources — websites that get priority placement in your Top Stories and search results. If our flight guides have helped you, you can add HappyFares as a preferred source in two clicks.

Add HappyFares as a Preferred Source on Google

Final word — booking BOM-KTM the smart way

Mumbai to Kathmandu is one of those rare international routes that’s genuinely easy: no visa stress, 3-hour flight, three airline options, and fares that can dip under ₹6,000 one-way in monsoon. Time it for October-November or March-April if you want Himalayan views, mid-week if you want savings, and book 28-35 days ahead during trekking season.

For first-timers, the visa-free entry is the killer feature — but carry your passport anyway. For trekkers, build buffer days around Lukla and Pokhara connections. For weekend travellers, KTM is genuinely an underrated Goa-alternative.

Ready to book? Check live BOM-KTM fares on HappyFares and lock in your Kathmandu trip.