Milwaukee (MKE) to Seattle (SEA)
Flight time
≈ 4h 11m
Bearing
293° NW
Milwaukee (MKE) to Seattle (SEA) is 1,690 miles (2,719 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies MKE–SEA
Filed traffic dataIn July 2026, Alaska Airlines operated the most departures, one of 2 carriers flying nonstop MKE–SEA; the Boeing 737 MAX 9 was the most common aircraft at 50% of departures; flights ran 83% full.
Departures
123
July 2026
Seats
21,794
both directions
Passengers
18,042
both directions
Load factor
82.8%
RPM ÷ ASM
Who flies MKE–SEA?
Alaska Airlines operated the most nonstop MKE–SEA departures in July 2026 (122), one of 2 carriers on the route.
- AS
122 departures · 21,614 seats
Share of departures99.2%82.7%
Load
- DL
1 departures · 180 seats
Share of departures0.8%97.8%
Load
What plane flies MKE–SEA?
In July 2026, the Boeing 737 MAX 9 flew 50% of MKE–SEA departures — more than any other aircraft type.
- Boeing 737 MAX 9
61 departures · 83.4% load
49.6% - Boeing 737-900ER
56 departures · 82.1% load
45.5% - Boeing 737-800
6 departures · 83.2% load
4.9%
How has MKE–SEA traffic changed?
Nonstop MKE–SEA departures held steady at about 123 a month between August 2025 and July 2026.
Monthly nonstop MKE–SEA traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
123 departures · 19,374 passengers
91.0%
Load
September 2025
120 departures · 16,058 passengers
76.1%
Load
October 2025
67 departures · 8,953 passengers
80.3%
Load
November 2025
66 departures · 8,676 passengers
75.3%
Load
December 2025
82 departures · 11,729 passengers
82.6%
Load
January 2026
49 departures · 6,234 passengers
72.0%
Load
February 2026
36 departures · 4,876 passengers
77.7%
Load
March 2026
51 departures · 7,949 passengers
88.7%
Load
April 2026
71 departures · 9,652 passengers
76.4%
Load
May 2026
114 departures · 15,792 passengers
78.9%
Load
June 2026
119 departures · 18,134 passengers
86.1%
Load
July 2026
123 departures · 18,042 passengers
82.8%
Load
By direction
Each direction is filed separately — they rarely match.
SEA → MKE
80.8% full
62 departures · 8,878 passengers
MKE → SEA
84.8% full
61 departures · 9,164 passengers
Nonstop MKE–SEA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Milwaukee (MKE) from Seattle (SEA)?
MKE to SEA is 1,690 miles (2,719 km / 1,468 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from MKE to SEA?
A nonstop covers the 1,690-mile great-circle distance in roughly 4h 11m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies MKE–SEA?
In July 2026, the Boeing 737 MAX 9 flew the largest share of departures (49.6%), followed by the Boeing 737-900ER (45.5%).
What mileage do I earn flying MKE–SEA?
Distance-based programs credit off the 1,690-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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