Air Miles Calculator

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

Distance from Chicago to Seattle (Chicago Midway International Airport – Seattle–Tacoma International Airport) is 1733 miles / 2789 kilometers / 1506 nautical miles.

How far is Seattle from Chicago?

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

Vincenty's formula (applied above)
  • 1733.255 miles
  • 2789.403 kilometers
  • 1506.157 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
  • 1728.763 miles
  • 2782.174 kilometers
  • 1502.254 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).

Flight duration

Estimated flight time from Chicago Midway International Airport (MDW) to Seattle–Tacoma International Airport (SEA) is 3 hours 46 minutes.

Time difference and current local times

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

Time Difference

Chicago
Seattle

Chicago, IL

 CDT

Seattle, WA

 PDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 190 kg (420 pounds).

Airport information


A Chicago Midway International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: MDW
ICAO Code: KMDW
Coordinates: 41°47′9″N, 87°45′8″W

B 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

Chicago to Seattle flight path

Shortest flight path between Chicago Midway International Airport (MDW) and Seattle–Tacoma International Airport (SEA).

Frequent Flyer Miles Calculator

Chicago (MDW) → Seattle (SEA).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1733
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1733

Round trip?