# Distance from Chicago (ORD) to Rayong (UTP)

> 13,869 km · estimated flight time 17h · Ultra-long-haul route.

## Summary

- **Distance**: 13,869 km / 8,618 mi / 7,489 nm
- **Estimated flight time**: 17h
- **Heading**: 349° (north)
- **Return heading**: 8° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Thailand
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 14:55 in Chicago, it's 02:55 in Rayong)
- **Elevation difference**: 638 ft (UTP is lower than ORD)

## Airports

### [Chicago O'Hare International Airport (ORD)](https://www.flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)

- City: Chicago, United States
- ICAO: KORD
- Timezone: America/Chicago
- Coordinates: 41.980000, -87.910000
- Elevation: 680 ft

### [U-Tapao International Airport (UTP)](https://www.flightduration.online/airport/utp-rayong-u-tapao-international-airport/1ef266df-f519-6d1e-9a6a-06bb2780ed98)

- City: Rayong, Thailand
- ICAO: VTBU
- Timezone: Asia/Bangkok
- Coordinates: 12.680000, 101.000000
- Elevation: 42 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 14:55 in Chicago, it's 02:55 in Rayong.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Chicago O'Hare International Airport (ORD)](https://www.flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)
- [U-Tapao International Airport (UTP)](https://www.flightduration.online/airport/utp-rayong-u-tapao-international-airport/1ef266df-f519-6d1e-9a6a-06bb2780ed98)
- [Flight duration calculator](/#calculator)