✈ ORD → LIS
8H 25M IN ECONOMY. PACK MELATONIN. PACK A NECK PILLOW. PACK REGRETS.
Flight from Chicago to Lisbon
From O'Hare (ORD), USA North America → Humberto Delgado (LIS), Portugal Europe
How long is the flight from Chicago to Lisbon?
A nonstop flight from Chicago (ORD) to Lisbon (LIS) takes about 8 hours 25 minutes, covering a great-circle distance of 3,999 miles (6,436 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
8h 25m
Nonstop, scheduled
Distance
3,999 mi
6,436 km · great-circle
Avg speed
765 km/h
Door-to-door including taxi
Time zones & jet lag
Chicago timezone
UTC-5
America/Chicago
Lisbon timezone
UTC+1
Europe/Lisbon
Time difference
+6h
6 hours ahead
Jet lag (rough)
~6d
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.