# Distance from Seattle (SEA) to Thanh Hóa (THD)

> 11,138 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 11,138 km / 6,921 mi / 6,014 nm
- **Estimated flight time**: 14h
- **Heading**: 315° (northwest)
- **Return heading**: 31° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Vietnam
- **Intercontinental**: North America → Asia
- **Time difference**: +14h (When it's 21:30 in Seattle, it's 11:30 in Thanh Hóa)
- **Elevation difference**: 373 ft (THD is lower than SEA)

## Airports

### [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)

- City: Seattle, United States
- ICAO: KSEA
- Timezone: America/Los_Angeles
- Coordinates: 47.450000, -122.310000
- Elevation: 432 ft

### [Thọ Xuân Airport (THD)](https://www.flightduration.online/airport/thd-thanh-hoa-tho-xuan-airport/1ef266df-f665-689e-be45-06bb2780ed98)

- City: Thanh Hóa, Vietnam
- ICAO: VVTX
- Timezone: Asia/Ho_Chi_Minh
- Coordinates: 19.900000, 105.470000
- Elevation: 59 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 21:30 in Seattle, it's 11:30 in Thanh Hóa.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Thọ Xuân Airport (THD)](https://www.flightduration.online/airport/thd-thanh-hoa-tho-xuan-airport/1ef266df-f665-689e-be45-06bb2780ed98)
- [Flight duration calculator](/#calculator)