Los Angeles (LAX) to Seattle (SEA)
Flight time
≈ 2h 43m
Bearing
349° N
Los Angeles (LAX) to Seattle (SEA) is 955 miles (1,537 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies LAX–SEA
US DOT T-100 · filed dataIn April 2026, Alaska Airlines operated the most departures, one of 5 carriers flying nonstop LAX–SEA; the Boeing 737-900ER was the most common aircraft at 28% of departures; flights ran 80% full.
Departures
1,219
April 2026
Seats
185,737
both directions
Passengers
147,840
both directions
Load factor
79.6%
passengers ÷ seats
Who flies LAX–SEA?
Alaska Airlines operated the most nonstop LAX–SEA departures in April 2026 (505), one of 5 carriers on the route.
- AS
Alaska Airlines
505 departures · 86,874 seats
Share of departures41.4%79.5%
Load
- DL
Delta Air Lines
345 departures · 58,742 seats
Share of departures28.3%78.6%
Load
- OO
SkyWest Airlines
265 departures · 18,136 seats
Share of departures21.7%86.1%
Load
- F9
Frontier Airlines
58 departures · 13,780 seats
Share of departures4.8%81.3%
Load
- UA
United Airlines
46 departures · 8,205 seats
Share of departures3.8%70.3%
Load
What plane flies LAX–SEA?
In April 2026, the Boeing 737-900ER flew 28% of LAX–SEA departures — more than any other aircraft type.
- Boeing 737-900ER
340 departures · 78.9% load
27.9% - Boeing 737-800
299 departures · 79.7% load
24.5% - Boeing 737 MAX 9
204 departures · 78.2% load
16.7% - Embraer E175
163 departures · 86.9% load
13.4% - Bombardier CRJ-700
102 departures · 84.9% load
8.4% - Boeing 737 MAX 8
49 departures · 75.7% load
4.0% - Airbus A321neo
46 departures · 82.1% load
3.8% - Airbus A321
14 departures · 80.0% load
1.1% - Airbus A330-900
1 departures · 0.0% load
0.1% - Airbus A320
1 departures · 62.7% load
0.1%
How has LAX–SEA traffic changed?
Nonstop LAX–SEA departures fell from 1,309 in May 2025 to 1,219 in April 2026.
Monthly nonstop LAX–SEA traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
1,309 departures · 157,426 passengers
73.8%
Load
June 2025
1,272 departures · 164,134 passengers
81.0%
Load
July 2025
1,285 departures · 177,535 passengers
86.8%
Load
August 2025
1,285 departures · 174,599 passengers
85.2%
Load
September 2025
1,216 departures · 142,343 passengers
73.3%
Load
October 2025
1,229 departures · 139,323 passengers
70.5%
Load
November 2025
1,202 departures · 133,161 passengers
72.3%
Load
December 2025
1,256 departures · 148,011 passengers
79.0%
Load
January 2026
1,124 departures · 123,118 passengers
75.5%
Load
February 2026
1,118 departures · 128,221 passengers
78.3%
Load
March 2026
1,252 departures · 145,828 passengers
79.5%
Load
April 2026
1,219 departures · 147,840 passengers
79.6%
Load
By direction
The DOT files each direction separately — they rarely match.
SEA → LAX
78.9% full
610 departures · 73,519 passengers
LAX → SEA
80.3% full
609 departures · 74,321 passengers
Nonstop LAX–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 Los Angeles (LAX) from Seattle (SEA)?
LAX to SEA is 955 miles (1,537 km / 830 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from LAX to SEA?
A nonstop covers the 955-mile great-circle distance in roughly 2h 43m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies LAX–SEA?
In April 2026, the Boeing 737-900ER flew the largest share of departures (27.9%), followed by the Boeing 737-800 (24.5%).
What mileage do I earn flying LAX–SEA?
Distance-based programs credit off the 955-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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