Chicago (ORD) to Seattle (SEA)
Flight time
≈ 4h 14m
Bearing
295° NW
Chicago (ORD) to Seattle (SEA) is 1,716 miles (2,762 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ORD–SEA
US DOT T-100 · filed dataIn April 2026, United Airlines operated the most departures, one of 4 carriers flying nonstop ORD–SEA; the Boeing 737-800 was the most common aircraft at 28% of departures; flights ran 80% full.
Departures
912
April 2026
Seats
155,707
both directions
Passengers
124,152
both directions
Load factor
79.7%
passengers ÷ seats
Who flies ORD–SEA?
United Airlines operated the most nonstop ORD–SEA departures in April 2026 (264), one of 4 carriers on the route.
- UA
United Airlines
264 departures · 47,124 seats
Share of departures28.9%83.5%
Load
- AA
American Airlines
255 departures · 44,724 seats
Share of departures28.0%79.0%
Load
- AS
Alaska Airlines
245 departures · 42,990 seats
Share of departures26.9%78.5%
Load
- DL
Delta Air Lines
148 departures · 20,869 seats
Share of departures16.2%75.5%
Load
What plane flies ORD–SEA?
In April 2026, the Boeing 737-800 flew 28% of ORD–SEA departures — more than any other aircraft type.
- Boeing 737-800
254 departures · 79.6% load
27.9% - Boeing 737 MAX 9
165 departures · 78.9% load
18.1% - Boeing 737-900ER
140 departures · 79.2% load
15.3% - Boeing 737 MAX 8
137 departures · 80.0% load
15.0% - Airbus A220-300
85 departures · 76.0% load
9.3% - Airbus A321neo
66 departures · 86.4% load
7.2% - Airbus A321
48 departures · 76.2% load
5.3% - Airbus A320
12 departures · 85.3% load
1.3% - Airbus A220-100
5 departures · 95.8% load
0.5%
How has ORD–SEA traffic changed?
Nonstop ORD–SEA departures fell from 1,068 in May 2025 to 912 in April 2026.
Monthly nonstop ORD–SEA traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
1,068 departures · 158,897 passengers
87.1%
Load
June 2025
1,133 departures · 178,450 passengers
90.3%
Load
July 2025
1,227 departures · 200,715 passengers
93.2%
Load
August 2025
1,173 departures · 193,747 passengers
93.5%
Load
September 2025
1,014 departures · 157,332 passengers
85.9%
Load
October 2025
982 departures · 143,010 passengers
82.1%
Load
November 2025
746 departures · 101,361 passengers
80.9%
Load
December 2025
754 departures · 106,767 passengers
83.9%
Load
January 2026
593 departures · 80,003 passengers
80.7%
Load
February 2026
598 departures · 78,893 passengers
78.3%
Load
March 2026
688 departures · 100,526 passengers
85.5%
Load
April 2026
912 departures · 124,152 passengers
79.7%
Load
By direction
The DOT files each direction separately — they rarely match.
ORD → SEA
76.7% full
458 departures · 59,936 passengers
SEA → ORD
82.8% full
454 departures · 64,216 passengers
Nonstop ORD–SEA traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Frequently asked
How far is Chicago (ORD) from Seattle (SEA)?
ORD to SEA is 1,716 miles (2,762 km / 1,491 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ORD to SEA?
A nonstop covers the 1,716-mile great-circle distance in roughly 4h 14m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ORD–SEA?
In April 2026, the Boeing 737-800 flew the largest share of departures (27.9%), followed by the Boeing 737 MAX 9 (18.1%).
What mileage do I earn flying ORD–SEA?
Distance-based programs credit off the 1,716-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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