# Distance from Chiang Mai (CNX) to San Francisco (SFO)

> 12,399 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,399 km / 7,705 mi / 6,695 nm
- **Estimated flight time**: 16h
- **Heading**: 34° (northeast)
- **Return heading**: 318° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Thailand) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -14h (When it's 00:51 in Chiang Mai, it's 10:51 in San Francisco)
- **Elevation difference**: 1,023 ft (SFO is lower than CNX)

## Airports

### [Chiang Mai International Airport (CNX)](https://www.flightduration.online/airport/cnx-chiang-mai-chiang-mai-international-airport/1ef266df-f525-689e-9326-06bb2780ed98)

- City: Chiang Mai, Thailand
- ICAO: VTCC
- Timezone: Asia/Bangkok
- Coordinates: 18.770000, 98.960000
- Elevation: 1,036 ft

### [San Francisco International Airport (SFO)](https://www.flightduration.online/airport/sfo-san-francisco-san-francisco-international-airport/1ef266df-382a-66ea-a1cc-06bb2780ed98)

- City: San Francisco, United States
- ICAO: KSFO
- Timezone: America/Los_Angeles
- Coordinates: 37.620000, -122.380000
- Elevation: 13 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 00:51 in Chiang Mai, it's 10:51 in San Francisco.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Chiang Mai International Airport (CNX)](https://www.flightduration.online/airport/cnx-chiang-mai-chiang-mai-international-airport/1ef266df-f525-689e-9326-06bb2780ed98)
- [San Francisco International Airport (SFO)](https://www.flightduration.online/airport/sfo-san-francisco-san-francisco-international-airport/1ef266df-382a-66ea-a1cc-06bb2780ed98)
- [Flight duration calculator](/#calculator)