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Distance between Chicago, IL (ORD) and Seattle, WA (SEA)

Flight distance from Chicago to Seattle (Chicago O'Hare International Airport – Seattle–Tacoma International Airport) is 1721 miles / 2769 kilometers / 1495 nautical miles. Estimated flight time is 3 hours 45 minutes.

Driving distance from Chicago (ORD) to Seattle (SEA) is 2039 miles / 3281 kilometers and travel time by car is about 36 hours 8 minutes.

Chicago – Seattle

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1721
Miles
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2769
Kilometers
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1495
Nautical miles

How far is Seattle from Chicago?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common methods:

Vincenty's formula (applied above)
  • 1720.561 miles
  • 2768.975 kilometers
  • 1495.127 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 1716.075 miles
  • 2761.755 kilometers
  • 1491.229 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Chicago to Seattle?

Estimated flight time from Chicago O'Hare International Airport to Seattle–Tacoma International Airport is 3 hours 45 minutes.

What is the time difference between Chicago and Seattle?

The time difference between Chicago and Seattle is 2 hours. Seattle is 2 hours behind Chicago.
Chicago time to Seattle time converter

Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Seattle–Tacoma International Airport (SEA)

On average flying from Chicago to Seattle generates about 194 kg of CO2 per passenger, 194 kilograms is equal to 428 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Chicago to Seattle

Shortest flight path between Chicago O'Hare International Airport (ORD) and Seattle–Tacoma International Airport (SEA).

Airport information

Origin Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W
Destination Seattle–Tacoma International Airport
City: Seattle, WA
Country: United States Flag of United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″W

Airlines flying from Chicago (ORD) to Seattle (SEA)

Alaska Airlines
American Airlines
United Airlines