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.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies SAN–SEA
Filed traffic dataIn May 2026, Alaska Airlines operated the most departures, one of 3 carriers flying nonstop SAN–SEA; the Boeing 737-800 was the most common aircraft at 40% of departures; flights ran 81% full.
Departures
843
May 2026
Seats
141,918
both directions
Passengers
114,766
both directions
Load factor
80.9%
RPM ÷ ASM
Who flies SAN–SEA?
Alaska Airlines operated the most nonstop SAN–SEA departures in May 2026 (487), one of 3 carriers on the route.
- AS
487 departures · 84,465 seats
Share of departures57.8%82.5%
Load
- DL
295 departures · 46,816 seats
Share of departures35.0%76.7%
Load
- WN
61 departures · 10,637 seats
Share of departures7.2%86.3%
Load
What plane flies SAN–SEA?
In May 2026, the Boeing 737-800 flew 40% of SAN–SEA departures — more than any other aircraft type.
- Boeing 737-800
341 departures · 78.6% load
40.5% - Boeing 737-900ER
232 departures · 81.0% load
27.5% - Boeing 737 MAX 9
176 departures · 82.7% load
20.9% - Boeing 737 MAX 8
56 departures · 87.8% load
6.6% - Airbus A220-300
26 departures · 79.7% load
3.1% - Airbus A220-100
10 departures · 80.7% load
1.2% - Boeing 737-700
1 departures · 70.8% load
0.1% - Boeing 757-200
1 departures · 95.8% load
0.1%
How has SAN–SEA traffic changed?
Nonstop SAN–SEA departures fell from 845 in June 2025 to 843 in May 2026.
Monthly nonstop SAN–SEA traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
845 departures · 115,783 passengers
83.3%
Load
July 2025
873 departures · 125,830 passengers
87.9%
Load
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
By direction
Each direction is filed separately — they rarely match.
SEA → SAN
78.1% full
424 departures · 55,540 passengers
SAN → SEA
83.6% full
419 departures · 59,226 passengers
Nonstop SAN–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 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 May 2026, the Boeing 737-800 flew the largest share of departures (40.5%), followed by the Boeing 737-900ER (27.5%).
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.
Keep exploring
Every route below is its own page.
Popular long-haul routes