# Distance from Boundary (BYA) to St Louis (STL)

> 4,321 km · estimated flight time 6h · Long-haul route.

## Summary

- **Distance**: 4,321 km / 2,685 mi / 2,333 nm
- **Estimated flight time**: 6h
- **Heading**: 106° (east southeast)
- **Return heading**: 327° (north northwest)
- **Classification**: Long-haul
- **Type**: Domestic (United States)
- **Time difference**: +3h (When it's 02:34 in Boundary, it's 05:34 in St Louis)
- **Elevation difference**: 2,323 ft (STL is lower than BYA)

## Airports

### [Boundary Airport (BYA)](https://www.flightduration.online/airport/bya-boundary-boundary-airport/1ef266df-11f9-6a8e-ae68-06bb2780ed98)

- City: Boundary, United States
- ICAO: KBYA
- Timezone: America/Anchorage
- Coordinates: 64.080000, -141.110000
- Elevation: 2,940 ft

### [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)

- City: St Louis, United States
- ICAO: KSTL
- Timezone: America/Chicago
- Coordinates: 38.750000, -90.370000
- Elevation: 617 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 02:34 in Boundary, it's 05:34 in St Louis.
The 3-hour time difference may cause some jet lag.

## Related

- [Boundary Airport (BYA)](https://www.flightduration.online/airport/bya-boundary-boundary-airport/1ef266df-11f9-6a8e-ae68-06bb2780ed98)
- [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)
- [Flight duration calculator](/#calculator)