San Diego (SAN) to Seattle (SEA)
Flight time
≈ 2h 54m
Bearing
347° N
San Diego (SAN) to Seattle (SEA) is 1,051 miles (1,692 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SAN–SEA
Filed traffic dataIn July 2026, Alaska Airlines operated the most departures, one of 4 carriers flying nonstop SAN–SEA; the Boeing 737-800 was the most common aircraft at 36% of departures; flights ran 89% full.
Departures
907
July 2026
Seats
154,050
both directions
Passengers
137,657
both directions
Load factor
89.4%
RPM ÷ ASM
Who flies SAN–SEA?
Alaska Airlines operated the most nonstop SAN–SEA departures in July 2026 (546), one of 4 carriers on the route.
- AS
546 departures · 95,393 seats
Share of departures60.2%89.1%
Load
- DL
298 departures · 48,833 seats
Share of departures32.9%89.2%
Load
- WN
62 departures · 9,748 seats
Share of departures6.8%93.0%
Load
- QX
1 departures · 76 seats
Share of departures0.1%72.4%
Load
What plane flies SAN–SEA?
In July 2026, the Boeing 737-800 flew 36% of SAN–SEA departures — more than any other aircraft type.
- Boeing 737-800
331 departures · 89.2% load
36.5% - Boeing 737-900ER
274 departures · 88.8% load
30.2% - Boeing 737 MAX 9
226 departures · 89.6% load
24.9% - Boeing 737 MAX 8
46 departures · 91.5% load
5.1% - Boeing 737-700
29 departures · 92.0% load
3.2% - Embraer E175
1 departures · 72.4% load
0.1%
How has SAN–SEA traffic changed?
Nonstop SAN–SEA departures rose from 838 in August 2025 to 907 in July 2026.
Monthly nonstop SAN–SEA traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
838 departures · 124,270 passengers
88.6%
Load
September 2025
764 departures · 97,001 passengers
73.9%
Load
October 2025
677 departures · 88,396 passengers
79.8%
Load
November 2025
633 departures · 81,025 passengers
81.3%
Load
December 2025
697 departures · 90,945 passengers
84.1%
Load
January 2026
661 departures · 82,120 passengers
75.9%
Load
February 2026
608 departures · 82,632 passengers
83.0%
Load
March 2026
760 departures · 99,742 passengers
83.1%
Load
April 2026
818 departures · 110,080 passengers
84.2%
Load
May 2026
843 departures · 114,766 passengers
80.9%
Load
June 2026
869 departures · 125,232 passengers
85.4%
Load
July 2026
907 departures · 137,657 passengers
89.4%
Load
By direction
Each direction is filed separately — they rarely match.
SAN → SEA
88.9% full
454 departures · 68,554 passengers
SEA → SAN
89.8% full
453 departures · 69,103 passengers
Nonstop SAN–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 San Diego (SAN) from Seattle (SEA)?
SAN to SEA is 1,051 miles (1,692 km / 914 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SAN to SEA?
A nonstop covers the 1,051-mile great-circle distance in roughly 2h 54m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SAN–SEA?
In July 2026, the Boeing 737-800 flew the largest share of departures (36.5%), followed by the Boeing 737-900ER (30.2%).
What mileage do I earn flying SAN–SEA?
Distance-based programs credit off the 1,051-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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