✈ ORD → ATH
11H 12M, 5,450 MI. THE AIRLINE OWES YOU SOMETHING. THEY WON'T GIVE IT.
Flight from Chicago to Athens
From O'Hare (ORD), USA North America → Eleftherios Venizelos (ATH), Greece Europe
How long is the flight from Chicago to Athens?
A nonstop flight from Chicago (ORD) to Athens (ATH) takes about 11 hours 12 minutes, covering a great-circle distance of 5,450 miles (8,771 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
11h 12m
Nonstop, scheduled
Distance
5,450 mi
8,771 km · great-circle
Avg speed
784 km/h
Door-to-door including taxi
Time zones & jet lag
Chicago timezone
UTC-5
America/Chicago
Athens timezone
UTC+3
Europe/Athens
Time difference
+8h
8 hours ahead
Jet lag (rough)
~8d
Eastward — worse
CO₂ footprint per passenger
Economy class, single passenger. Source: DEFRA 2024 averages.
This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.