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GAI to YSL: distance & flight time
Gaithersburg (Montgomery County Airpark) → St Leonard (St Leonard Airport)
724 mi
1,165 km · 629 nm
2h 2m
estimated nonstop flight time
—
time difference · heading northeast
See live GAI→YSL fares Phone-only fares on this route — call free
Flight time details
724 miles nonstop takes roughly 2h 2m gate to gate, flying northeast. 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
- GAI — Montgomery County Airpark · Gaithersburg, United States
- YSL — St Leonard Airport · St Leonard, Canada
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 YSL
- CAR · Caribou Municipal Airport22 mi away
- WFK · Northern Aroostook Regional Airport24 mi away
- PQI · Northern Maine Regional Airport at Presque Isle34 mi away
- HUL · Houlton International Airport71 mi away
Frequently asked questions
How far is GAI from YSL?
The flight distance from Gaithersburg (GAI) to St Leonard (YSL) is 724 miles (1,165 km, 629 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to YSL?
A nonstop flight takes about 2h 2m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from GAI to YSL?
Nonstop service on GAI–YSL depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 2m nonstop estimate.
What is the cheapest way to fly from GAI to YSL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–YSL that never appear on search engines, with no booking fees.
Why are some GAI to YSL fares phone-only?
Consolidator contracts let us sell certain GAI–YSL tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.