Distance From Grand Lake St Marys Seaplane Base to Hartsfield Jackson Atlanta International Airport

The distance from Grand Lake St Marys Seaplane Base () to Hartsfield Jackson Atlanta International Airport (ATL) is 478 miles or 768 kilometers or 415 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from St Marys ( United States ) to Atlanta ( United States )?

A one-way nonstop (direct) flight between St Marys and Atlanta takes around 1 hours 5 minutes.

Estimated flight time from Grand Lake St Marys Seaplane Base, St Marys, United States to Hartsfield Jackson Atlanta International Airport, Atlanta, United States is 1 hours 5 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - ATL

Kilometers		768 km
Statute Miles		478 miles
Nautical Miles		415 nm
Avg. Time of Flight		1 hours 5 minutes

Grand Lake St Marys Seaplane Base to Hartsfield Jackson Atlanta International Airport Flight Route Map - to ATL Flight Path

Location of Grand Lake St Marys Seaplane Base & Hartsfield Jackson Atlanta International Airport is given below.
Click the map to view St Marys to Atlanta nonstop flight path and travel direction.

Click to see flight route on Google Map between St Marys, United States and Atlanta, United States. .

Nonstop flight route between St Marys, United States and Atlanta, United States.

Time Difference Between the Airports • - ATL

Time difference between St Marys (United States) and Atlanta (United States) is 0 Hours.

Location	Local Time
St Marys (United States)	2026-03-22, 07:54:06 EDT
Atlanta (United States)	2026-03-22, 07:54:06 EDT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Grand Lake St Marys Seaplane Base ( / O12) St Marys, United States

Destination

Hartsfield Jackson Atlanta International Airport (ATL / KATL) Atlanta, United States