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GAI to SGN: distance & flight time
Gaithersburg (Montgomery County Airpark) → Ho Chi Minh City (Tan Son Nhat International Airport)
8,974 mi
14,443 km · 7,798 nm
18h 4m
estimated nonstop flight time
+11h
time difference · heading north
See live GAI→SGN fares Phone-only fares on this route — call free
Flight time details
8,974 miles nonstop takes roughly 18h 4m 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
- SGN — Tan Son Nhat International Airport · Ho Chi Minh City, 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 SGN
- VCA · Can Tho International Airport82 mi away
- VKG · Rach Gia Airport119 mi away
- KTI · Kratie Airport122 mi away
- PNH · Phnom Penh International Airport132 mi away
Frequently asked questions
How far is GAI from SGN?
The flight distance from Gaithersburg (GAI) to Ho Chi Minh City (SGN) is 8,974 miles (14,443 km, 7,798 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to SGN?
A nonstop flight takes about 18h 4m 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 Ho Chi Minh City?
Ho Chi Minh City is 11 hours ahead of Gaithersburg.
What is the cheapest way to fly from GAI to SGN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–SGN that never appear on search engines, with no booking fees.