Need help booking?
Unpublished phone-only deals available
GAI to HPH: distance & flight time
Gaithersburg (Montgomery County Airpark) → Haiphong (Cat Bi International Airport)
8,284 mi
13,332 km · 7,199 nm
16h 43m
estimated nonstop flight time
+11h
time difference · heading north
See live GAI→HPH fares Phone-only fares on this route — call free
Flight time details
8,284 miles nonstop takes roughly 16h 43m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- HPH — Cat Bi International Airport · Haiphong, Vietnam
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near GAI
Near HPH
- HAN · Noi Bai International Airport65 mi away
Frequently asked questions
How far is GAI from HPH?
The flight distance from Gaithersburg (GAI) to Haiphong (HPH) is 8,284 miles (13,332 km, 7,199 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to HPH?
A nonstop flight takes about 16h 43m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Gaithersburg and Haiphong?
Haiphong is 11 hours ahead of Gaithersburg.
What is the cheapest way to fly from GAI to HPH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–HPH that never appear on search engines, with no booking fees.