# Distance between Hat Yai (HDY) and Haiphong (HPH)

Flight distance from Hat Yai to Haiphong (Hat Yai International Airport – Cat Bi International Airport) is 1045 miles / 1681 kilometers / 908 nautical miles. Estimated flight time is 2 hours 28 minutes.

Driving distance from Hat Yai (HDY) to Haiphong (HPH) is 1450 miles / 2334 kilometers and travel time by car is about 27 hours 47 minutes.

## Map of flight path and driving directions from Hat Yai to Haiphong.

Shortest flight path between Hat Yai International Airport (HDY) and Cat Bi International Airport (HPH).

## How far is Haiphong from Hat Yai?

There are several ways to calculate distances between Hat Yai and Haiphong. Here are two common methods:

**Vincenty's formula**(applied above)

- 1044.620 miles
- 1681.152 kilometers
- 907.750 nautical miles

*Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.*

**Haversine formula**

- 1048.748 miles
- 1687.797 kilometers
- 911.337 nautical miles

*The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).*

## Airport information

A | Hat Yai International Airport |
---|---|

City: | Hat Yai |

Country: | Thailand |

IATA Code: | HDY |

ICAO Code: | VTSS |

Coordinates: | 6°55′59″N, 100°23′34″E |

B | Cat Bi International Airport |
---|---|

City: | Haiphong |

Country: | Vietnam |

IATA Code: | HPH |

ICAO Code: | VVCI |

Coordinates: | 20°49′9″N, 106°43′29″E |

## Time difference and current local times

There is no time difference between Hat Yai and Haiphong.

### Time Difference

### Hat Yai

### Haiphong

## Carbon dioxide emissions

Estimated CO_{2} emissions per passenger is 154 kg (339 pounds).

## Frequent Flyer Miles Calculator

Hat Yai (HDY) → Haiphong (HPH).

### In total

Round trip?