# Distance from Cascais Airport (CAT) to Seattle (SEA)

> 8,363 km · estimated flight time 11h · Long-haul route.

## Summary

- **Distance**: 8,363 km / 5,197 mi / 4,516 nm
- **Estimated flight time**: 11h
- **Heading**: 320° (northwest)
- **Return heading**: 48° (northeast)
- **Classification**: Long-haul
- **Type**: International (Portugal) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -8h (When it's 21:27 in Cascais Airport, it's 13:27 in Seattle)
- **Elevation difference**: 107 ft (SEA is higher than CAT)

## Airports

### [Cascais Airport (CAT)](https://www.flightduration.online/airport/cat-cascais-airport/1ef266df-5574-614c-8750-06bb2780ed98)

- City: Cascais Airport, Portugal
- ICAO: LPCS
- Timezone: Europe/Lisbon
- Coordinates: 38.730000, -9.360000
- Elevation: 325 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 a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 21:27 in Cascais Airport, it's 13:27 in Seattle.
With a 8-hour time difference, expect significant jet lag.

## Related

- [Cascais Airport (CAT)](https://www.flightduration.online/airport/cat-cascais-airport/1ef266df-5574-614c-8750-06bb2780ed98)
- [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)