JFK → ATH
9 h 20 min
Estimated gate-to-gate scheduled time. Initial heading 56° (NE).
Leave New York Sat 7 Nov, 10:00 local → arrive Athens Sun 8 Nov, 02:20 local +1 day.
Route · North Atlantic
John F. Kennedy International Airport (United States) and Athens Eleftherios Venizelos International Airport (Greece): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.
9 h 20 min
Estimated gate-to-gate scheduled time. Initial heading 56° (NE).
Leave New York Sat 7 Nov, 10:00 local → arrive Athens Sun 8 Nov, 02:20 local +1 day.
11 h
Estimated gate-to-gate scheduled time. Initial heading 307° (NW).
Leave Athens Sat 7 Nov, 10:00 local → arrive New York Sat 7 Nov, 14:00 local.
JFK-bound flights are the slower direction by about 100 minutes in our estimate: the route runs mostly east–west through latitudes where the prevailing westerly winds at cruise height are strong, so heading east rides a tailwind and heading west fights a headwind. How we estimate it.
| Great-circle distance | 7,933 km · 4,929 mi · 4,283 nmi |
|---|---|
| Initial heading | 56° (NE) from JFK; 307° (NW) from ATH |
| Farthest from the equator | 51.2°N — the path arcs north of both airports |
| Crosses | neither the equator nor the 180th meridian |
| Share of the longest possible trip | 40% of the 20,015 km to the far side of the Earth |
| JFK | America/New_York — UTC−4 now; UTC−5 standard time, UTC−4 during daylight saving time |
|---|---|
| ATH | Europe/Athens — UTC+2 now; UTC+2 standard time, UTC+3 during daylight saving time |
| Difference | Athens is 6 hours ahead of New York today. |
Jet lag, flying JFK → ATH. Your body clock has to move 6 hours earlier, like an eastward trip. A common rule of thumb is that the body clock adjusts by roughly one time zone a day, so expect up to about 6 days to fully adjust. Shifting earlier (as here) is usually the harder direction; morning daylight at the destination helps. Flying the other way, the shift is reversed.
General information, not medical advice.
Need a different pair? The flight-time calculator works for any two of 3,245 airports. Not covered: which airlines fly this route, schedules, fares and live status — that data is proprietary and we don’t guess it.
Photos on airport pages are credited there. Estimates are rounded to 5 minutes; typical error about 13 minutes (validation).