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HHH to GAI: distance & flight time
Hilton Head Island (Hilton Head Airport) → Gaithersburg (Montgomery County Airpark)
519 mi
835 km · 451 nm
1h 36m
estimated nonstop flight time
Same time
time difference · heading north
See live HHH→GAI fares Phone-only fares on this route — call free
Flight time details
519 miles nonstop takes roughly 1h 36m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- HHH — Hilton Head Airport · Hilton Head Island, United States
- GAI — Montgomery County Airpark · Gaithersburg, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
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Near HHH
Near GAI
Frequently asked questions
How far is HHH from GAI?
The flight distance from Hilton Head Island (HHH) to Gaithersburg (GAI) is 519 miles (835 km, 451 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HHH to GAI?
A nonstop flight takes about 1h 36m 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 cheapest way to fly from HHH to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HHH–GAI that never appear on search engines, with no booking fees.