# Distance from Marathon (MTH) to Seattle (SEA)

> 4,409 km · estimated flight time 6h · Long-haul route.

## Summary

- **Distance**: 4,409 km / 2,740 mi / 2,381 nm
- **Estimated flight time**: 6h
- **Heading**: 316° (northwest)
- **Return heading**: 110° (east southeast)
- **Classification**: Long-haul
- **Type**: Domestic (United States)
- **Time difference**: -3h (When it's 13:16 in Marathon, it's 10:16 in Seattle)
- **Elevation difference**: 427 ft (SEA is higher than MTH)

## Airports

### [The Florida Keys Marathon International Airport (MTH)](https://flightduration.online/airport/mth-marathon-the-florida-keys-marathon-international-airport/1ef266df-2c6f-6666-a658-06bb2780ed98)

- City: Marathon, United States
- ICAO: KMTH
- Timezone: America/New_York
- Coordinates: 24.730000, -81.050000
- Elevation: 5 ft

### [Seattle-Tacoma International Airport (SEA)](https://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 13:16 in Marathon, it's 10:16 in Seattle.
The 3-hour time difference may cause some jet lag.

## Related

- [The Florida Keys Marathon International Airport (MTH)](https://flightduration.online/airport/mth-marathon-the-florida-keys-marathon-international-airport/1ef266df-2c6f-6666-a658-06bb2780ed98)
- [Seattle-Tacoma International Airport (SEA)](https://flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)