# Distance from Dehradun (DED) to Seattle (SEA)

> 11,142 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 11,142 km / 6,923 mi / 6,016 nm
- **Estimated flight time**: 14h
- **Heading**: 14° (north northeast)
- **Return heading**: 342° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (India) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -12.5h (When it's 01:53 in Dehradun, it's 13:23 in Seattle)
- **Elevation difference**: 1,399 ft (SEA is lower than DED)

## Airports

### [Dehradun Airport (DED)](https://www.flightduration.online/airport/ded-dehradun-dehradun-airport/1ef266df-f1fb-6664-aa1d-06bb2780ed98)

- City: Dehradun, India
- ICAO: VIDN
- Timezone: Asia/Kolkata
- Coordinates: 30.190000, 78.180000
- Elevation: 1,831 ft

### [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

## 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 01:53 in Dehradun, it's 13:23 in Seattle.
With a 12.5-hour time difference, expect significant jet lag.

## Related

- [Dehradun Airport (DED)](https://www.flightduration.online/airport/ded-dehradun-dehradun-airport/1ef266df-f1fb-6664-aa1d-06bb2780ed98)
- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)