How is the flight distance measured?

Flight distances are measured as the great-circle (straight-line) distance between airports. Actual flight paths may be slightly longer due to air traffic routing and weather avoidance.

How long does the flight from Chicago to Lisbon take?

Flight time depends on the exact route and aircraft, but at roughly 6,436 km the typical non-stop flight takes 1–10 hours. Check the flight duration page for the exact average.

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Flight Distance: Chicago to Lisbon

6,436

Kilometres (km)

3,999

Miles (mi)

3,475

Nautical miles

About this flight distance

The great circle distance from Chicago to Lisbon is approximately 6,436 km. The typical flight time is 8h 04m.

This is the shortest possible distance between the two cities as the crow flies. Real flight paths are often slightly longer due to air traffic control routing, weather, and airspace restrictions.

Related route pages

→Direct flights Chicago to Lisbon →Flight duration Chicago to Lisbon →Cheapest day to fly Chicago to Lisbon →Flights Chicago to Lisbon

Nearby airports

Near Chicago

Chicago Midway International Airport (MDW)25 km
Gary Chicago International Airport (GYY)57 km
Michigan City Municipal Airport (MGC)95 km

Near Lisbon

Cascais Airport (CAT)20 km

Frequently Asked Questions

The great-circle distance from Chicago to Lisbon is approximately 6,436 km (3,999 miles).