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YHM to GAI: distance & flight time
Hamilton (John C. Munro Hamilton International Airport) → Gaithersburg (Montgomery County Airpark)
312 mi
502 km · 271 nm
1h 17m
estimated nonstop flight time
Same time
time difference · heading southeast
See live YHM→GAI fares Phone-only fares on this route — call free
Flight time details
312 miles nonstop takes roughly 1h 17m gate to gate, flying southeast. 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
- YHM — John C. Munro Hamilton International Airport · Hamilton, Canada
- 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
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 YHM
- YYZ · Lester B. Pearson International Airport38 mi away
- DU9 · Dunnville Airport27 mi away
- YKF · Waterloo Airport30 mi away
- YCM · Niagara District Airport38 mi away
Near GAI
Frequently asked questions
How far is YHM from GAI?
The flight distance from Hamilton (YHM) to Gaithersburg (GAI) is 312 miles (502 km, 271 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YHM to GAI?
A nonstop flight takes about 1h 17m 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 YHM to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YHM–GAI that never appear on search engines, with no booking fees.