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
Filed traffic dataIn May 2026, Alaska Airlines operated the most departures, one of 6 carriers flying nonstop LAX–SEA; the Boeing 737-800 was the most common aircraft at 29% of departures; flights ran 78% full.
Departures
1,366
May 2026
Seats
212,458
both directions
Passengers
166,426
both directions
Load factor
78.3%
RPM ÷ ASM
Who flies LAX–SEA?
Alaska Airlines operated the most nonstop LAX–SEA departures in May 2026 (572), one of 6 carriers on the route.
- AS
572 departures · 97,848 seats
Share of departures41.9%77.1%
Load
- DL
411 departures · 70,155 seats
Share of departures30.1%77.7%
Load
- OO
236 departures · 16,048 seats
Share of departures17.3%84.8%
Load
- UA
79 departures · 13,265 seats
Share of departures5.8%78.7%
Load
- F9
62 departures · 14,686 seats
Share of departures4.5%81.6%
Load
- QX
6 departures · 456 seats
Share of departures0.4%84.9%
Load
What plane flies LAX–SEA?
In May 2026, the Boeing 737-800 flew 29% of LAX–SEA departures — more than any other aircraft type.
- Boeing 737-800
390 departures · 76.8% load
28.5% - Boeing 737-900ER
330 departures · 76.8% load
24.2% - Boeing 737 MAX 9
180 departures · 78.6% load
13.2% - Embraer E175
132 departures · 82.6% load
9.7% - Bombardier CRJ-700
110 departures · 87.6% load
8.1% - Airbus A321neo
99 departures · 82.5% load
7.2% - Boeing 737 MAX 8
84 departures · 75.7% load
6.2% - Airbus A320
19 departures · 86.4% load
1.4% - Airbus A321
14 departures · 82.9% load
1.0% - Airbus A350-900
2 departures · 48.7% load
0.1% - Boeing 737-700
2 departures · 94.8% load
0.1% - Airbus A320neo
1 departures · 88.7% load
0.1% - Airbus A220-100
1 departures · 0.0% load
0.1% - Airbus A220-300
1 departures · 84.6% load
0.1% - Boeing 757-200
1 departures · 0.0% load
0.1%
How has LAX–SEA traffic changed?
Nonstop LAX–SEA departures rose from 1,272 in June 2025 to 1,366 in May 2026.
Monthly nonstop LAX–SEA traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
1,272 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
May 2026
1,366 departures · 166,426 passengers
78.3%
Load
By direction
Each direction is filed separately — they rarely match.
LAX → SEA
82.3% full
685 departures · 87,624 passengers
SEA → LAX
74.3% full
681 departures · 78,802 passengers
Nonstop LAX–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 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 May 2026, the Boeing 737-800 flew the largest share of departures (28.5%), followed by the Boeing 737-900ER (24.2%).
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.
Trip reports on YouTube
Fliers post trip reports from this route to YouTube. These three were matched automatically from public YouTube listings — The Frequent Flier does not host, review, or endorse them.
The Trip Reporter
Delta Air Lines Airbus A321neo Comfort Plus Trip Report | Seattle to Los Angeles
24:51 · Dec 2025
Global Aviation & Travel
REVIEW | Delta Air Lines | Seattle (SEA) - Los Angeles (LAX) | Airbus A321neo | First Class
25:16 · Jun 2024
Coke Cans And Winglets
TRIP REPORT | Los Angeles (LAX) to Seattle (SEA) | Alaska Airlines | A321-253NX | Main
16:52 · Apr 2021
Source: YouTube. Titles, thumbnails, and channel names come from YouTube. Playing a video loads the YouTube player, and using it means you agree to the YouTube Terms of Service; the Google Privacy Policy applies.
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