Kathmandu to Bangkok Flight Distance
Tribhuvan International Airport (KTM) to Suvarnabhumi Airport (BKK)
Primary sources · 6
- [1] Vincenty (1975) — Direct and Inverse Solutions of Geodesics on the Ellipsoid — the iterative formula used for distance · Survey Review XXIII (176), pp. 88–93 · April 1975 https://www.ngs.noaa.gov/PUBS_LIB/inverse.pdf
- [2] NGA.STND.0036_1.0.0_WGS84 — WGS-84 reference ellipsoid (a = 6,378,137 m, 1/f = 298.257223563) · NGA Standard · July 2014 https://earth-info.nga.mil/index.php?dir=wgs84&action=wgs84
- [3] DESNZ 2024 conversion factors — Per-km kg CO₂e factors for the three distance bands and four cabin classes · UK Department for Energy Security and Net Zero · June 2024 https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2024
- [4] Lee et al. (2021) — Effective radiative forcing of aviation — the science behind the 1.9 × CO₂ → CO₂e uplift · Atmospheric Environment 244, 117834 · January 2021 https://doi.org/10.1016/j.atmosenv.2020.117834
- [5] OpenFlights — Airport coordinates and IATA codes · openflights.org/data.php · Community-maintained https://openflights.org/data.php
- [6] Sack (2010) — Jet-lag review — clinical chronobiology and asymmetric recovery rates · New England Journal of Medicine 362:440 · February 2010 https://www.nejm.org/doi/full/10.1056/NEJMcp0909838
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Your Route Summary
What This Means For Your Trip
Flight Duration: At 1,384 miles, this medium-haul flight will take approximately 3h 17m. Consider bringing a book or downloading entertainment for the journey.
Time Adjustment: Bangkok is 1.25 hours ahead of Kathmandu. You should experience minimal jet lag.
Environmental Impact: An economy class seat produces approximately 347 kg of CO2. Consider carbon offset programs if environmental impact is a concern.
Flight Options: 2 airlines serve this route, giving you options for schedule and price comparison.
Complete Flight Analysis
| Metric | Value | Category / Reference |
|---|---|---|
| Distance (Miles) | 1,384 mi | Primary frequent flyer unit |
| Distance (Kilometers) | 2,227 km | International standard |
| Distance (Nautical Miles) | 1,202 nm | Aviation standard |
| Flight Time | 3h 17m | Based on 850 km/h cruise + ground time |
| Route Classification | MEDIUM HAUL | Medium-haul flight (1,500 - 4,000 km) |
| Flight Direction | 131° SE | Southeast |
| Cruising Altitude | 37,000 ft | FL370 (11,278 m) |
| Time Difference | +1.25h | Jet lag: none |
| CO2 (Economy) | 347 kg | DEFRA 2024 factors |
| CO2 (Business) | 1007 kg | 2.9x economy |
| CO2 (First Class) | 1390 kg | 4x economy |
| Trees to Offset | 32 | Economy class, per passenger |
| Fuel per Passenger | 67 L | ~12,060 L total (180 pax) |
| Operating Airlines | 2 | Direct flights available |
Tips for This Route
Tribhuvan International Airport
Kathmandu, Nepal
Suvarnabhumi Airport
Bangkok, Thailand
Airlines Flying This Route
2 airlines operate flights between Kathmandu and Bangkok.
Flight Details
Flight Midpoint
The geographic midpoint of this flight is located at:
Carbon Emissions by Cabin Class
CO2 emissions vary by cabin class due to seat space allocation. Based on DEFRA 2024 emission factors.
Jet Lag & Travel Tips
- Minimal time difference - jet lag unlikely
Seat Recommendations
Distance in Perspective
Distance & Speed Reference
| Measurement | Value |
|---|---|
| Statute Miles | 1,384 mi |
| Kilometers | 2,227 km |
| Nautical Miles | 1,202 nm |
| Meters | 2,227,000 m |
| Feet | 7,307,520 ft |
| Flight Time (850 km/h) | 3h 17m |
| Driving Time (80 km/h avg) | 3 days (28 hours) |
Travel Speed Comparison
How long would it take to cover the 2,227 km between Kathmandu and Bangkok at different speeds?
| Mode | Speed | Time |
|---|---|---|
| Commercial Jet | 850 km/h | 3h 17m |
| Turboprop Aircraft | 500 km/h | 4h 27m |
| Bullet Train | 320 km/h | 6h 58m |
| Car (highway) | 100 km/h | 22h 16m |
| Walking | 5 km/h | 445h (19 days) |
| Speed of Sound | 1,235 km/h | 1h 48m |
Round Trip Summary
Quick Facts
Routes from KTM
View all routesFrequently Asked Questions
How far is Kathmandu from Bangkok?
The flight distance from Tribhuvan International Airport (KTM) to Suvarnabhumi Airport (BKK) is 1,384 miles (2,227 km). This is the great circle distance calculated using the Vincenty formula.
How long is the flight?
A direct flight takes approximately 3h 17m. This is a medium-haul flight typically cruising at 37,000 feet (FL370).
What is the time difference?
Bangkok is 1.25 hours ahead of Kathmandu.
What airlines fly this route?
2 airlines operate this route: Royal Nepal Airlines, Thai Airways International.
What is the carbon footprint?
Economy class: 347 kg CO2 per passenger. Business class: 1007 kg. First class: 1390 kg. Offset with ~32 trees.
Which seat side is best?
For this Southeast flight, the left side offers the best views away from sun glare.
Can I drive from Kathmandu to Bangkok instead of flying?
While driving is technically possible at 2,227 km, it would take approximately 28 hours of non-stop driving. Flying saves you significant time, reducing travel to just 3h 17m.
What aircraft typically fly this route?
This medium-haul route is typically served by Airbus A321, Boeing 737 MAX, Airbus A320neo aircraft. A mix of narrow-body and wide-body aircraft may operate this route depending on demand.
How can I offset the carbon from this flight?
An economy class seat on this route produces 347 kg CO2. You can offset this by planting approximately 32 trees, purchasing verified carbon credits through programs like Gold Standard or Verra, or supporting renewable energy projects. Many airlines also offer built-in carbon offset options during booking.
External Resources & References
Learn more about the airports, aviation data, and carbon emissions methodology used in this calculation.