# Distance from Parnaiba (PHB) to Seattle (SEA)

> 9,540 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,540 km / 5,928 mi / 5,151 nm
- **Estimated flight time**: 12h
- **Heading**: 318° (northwest)
- **Return heading**: 99° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → United States
- **Intercontinental**: South America → North America
- **Time difference**: -4h (When it's 02:00 in Parnaiba, it's 22:00 in Seattle)
- **Elevation difference**: 416 ft (SEA is higher than PHB)

## Airports

### [Prefeito Doutor Joao Silva Filho Airport (PHB)](https://www.flightduration.online/airport/phb-parnaiba-prefeito-doutor-joao-silva-filho-airport/1ef266df-9550-687e-abe9-06bb2780ed98)

- City: Parnaiba, Brazil
- ICAO: SBPB
- Timezone: America/Fortaleza
- Coordinates: -2.890000, -41.730000
- Elevation: 16 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 02:00 in Parnaiba, it's 22:00 in Seattle.
The 4-hour time difference may cause some jet lag.

## Related

- [Prefeito Doutor Joao Silva Filho Airport (PHB)](https://www.flightduration.online/airport/phb-parnaiba-prefeito-doutor-joao-silva-filho-airport/1ef266df-9550-687e-abe9-06bb2780ed98)
- [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)