# Distance from Kathmandu (KTM) to Seymour (SER)

> 12,552 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,552 km / 7,799 mi / 6,778 nm
- **Estimated flight time**: 16h
- **Heading**: 353° (north)
- **Return heading**: 8° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -9.75h (When it's 08:14 in Kathmandu, it's 22:29 in Seymour)
- **Elevation difference**: 3,807 ft (SER is lower than KTM)

## Airports

### [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)

- City: Kathmandu, Nepal
- ICAO: VNKT
- Timezone: Asia/Kathmandu
- Coordinates: 27.700000, 85.360000
- Elevation: 4,390 ft

### [Freeman Municipal Airport (SER)](https://www.flightduration.online/airport/ser-seymour-freeman-municipal-airport/1ef266df-380e-681e-91c5-06bb2780ed98)

- City: Seymour, United States
- ICAO: KSER
- Timezone: America/Indiana/Indianapolis
- Coordinates: 38.920000, -85.910000
- Elevation: 583 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 08:14 in Kathmandu, it's 22:29 in Seymour.
With a 9.75-hour time difference, expect significant jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Freeman Municipal Airport (SER)](https://www.flightduration.online/airport/ser-seymour-freeman-municipal-airport/1ef266df-380e-681e-91c5-06bb2780ed98)
- [Flight duration calculator](/#calculator)