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
Filed traffic dataIn May 2026, Alaska 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 82% full.
Departures
1,119
May 2026
Seats
197,285
both directions
Passengers
162,198
both directions
Load factor
82.2%
RPM ÷ ASM
Who flies ORD–SEA?
Alaska Airlines operated the most nonstop ORD–SEA departures in May 2026 (343), one of 4 carriers on the route.
- AS
343 departures · 60,075 seats
Share of departures30.7%78.9%
Load
- UA
297 departures · 54,726 seats
Share of departures26.5%84.3%
Load
- AA
296 departures · 53,162 seats
Share of departures26.5%84.2%
Load
- DL
183 departures · 29,322 seats
Share of departures16.4%81.5%
Load
What plane flies ORD–SEA?
In May 2026, the Boeing 737-800 flew 28% of ORD–SEA departures — more than any other aircraft type.
- Boeing 737-800
310 departures · 81.7% load
27.7% - Boeing 737-900ER
220 departures · 81.9% load
19.7% - Boeing 737 MAX 9
188 departures · 78.7% load
16.8% - Airbus A321neo
152 departures · 88.8% load
13.6% - Airbus A321
119 departures · 84.8% load
10.6% - Boeing 737 MAX 8
77 departures · 82.3% load
6.9% - Airbus A320
27 departures · 62.5% load
2.4% - Airbus A220-300
17 departures · 75.5% load
1.5% - Airbus A220-100
4 departures · 80.3% load
0.4% - Airbus A319
4 departures · 69.3% load
0.4% - Boeing 737-700
1 departures · 87.3% load
0.1%
How has ORD–SEA traffic changed?
Nonstop ORD–SEA departures fell from 1,133 in June 2025 to 1,119 in May 2026.
Monthly nonstop ORD–SEA traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
May 2026
1,119 departures · 162,198 passengers
82.2%
Load
By direction
Each direction is filed separately — they rarely match.
ORD → SEA
86.5% full
562 departures · 85,722 passengers
SEA → ORD
77.9% full
557 departures · 76,476 passengers
Nonstop ORD–SEA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
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 May 2026, the Boeing 737-800 flew the largest share of departures (27.7%), followed by the Boeing 737-900ER (19.7%).
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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