San Luis Obispo (SBP) to Seattle (SEA)
Flight time
≈ 2h 30m
Bearing
355° N
San Luis Obispo (SBP) to Seattle (SEA) is 848 miles (1,365 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SBP–SEA
US DOT T-100 · filed dataIn April 2026, Alaska Airlines operated the most departures, one of 2 carriers flying nonstop SBP–SEA; the Boeing 737-800 was the most common aircraft at 54% of departures; flights ran 81% full.
Departures
78
April 2026
Seats
9,474
both directions
Passengers
7,717
both directions
Load factor
81.5%
passengers ÷ seats
Who flies SBP–SEA?
Alaska Airlines operated the most nonstop SBP–SEA departures in April 2026 (42), one of 2 carriers on the route.
- AS
Alaska Airlines
42 departures · 6,738 seats
Share of departures53.8%82.9%
Load
- QX
Horizon Air
36 departures · 2,736 seats
Share of departures46.2%77.8%
Load
What plane flies SBP–SEA?
In April 2026, the Boeing 737-800 flew 54% of SBP–SEA departures — more than any other aircraft type.
- Boeing 737-800
42 departures · 82.9% load
53.8% - Embraer E175
36 departures · 77.8% load
46.2%
How has SBP–SEA traffic changed?
Nonstop SBP–SEA departures rose from 61 in May 2025 to 78 in April 2026.
Monthly nonstop SBP–SEA traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
61 departures · 6,730 passengers
72.3%
Load
June 2025
61 departures · 7,724 passengers
80.9%
Load
July 2025
62 departures · 8,019 passengers
81.3%
Load
August 2025
62 departures · 7,477 passengers
76.9%
Load
September 2025
54 departures · 6,417 passengers
74.6%
Load
October 2025
60 departures · 5,949 passengers
63.1%
Load
November 2025
60 departures · 5,837 passengers
62.4%
Load
December 2025
60 departures · 6,476 passengers
69.2%
Load
January 2026
62 departures · 4,530 passengers
80.2%
Load
February 2026
56 departures · 3,947 passengers
92.7%
Load
March 2026
60 departures · 5,588 passengers
81.4%
Load
April 2026
78 departures · 7,717 passengers
81.5%
Load
By direction
The DOT files each direction separately — they rarely match.
SBP → SEA
81.0% full
39 departures · 3,835 passengers
SEA → SBP
82.0% full
39 departures · 3,882 passengers
Nonstop SBP–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 San Luis Obispo (SBP) from Seattle (SEA)?
SBP to SEA is 848 miles (1,365 km / 737 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SBP to SEA?
A nonstop covers the 848-mile great-circle distance in roughly 2h 30m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SBP–SEA?
In April 2026, the Boeing 737-800 flew the largest share of departures (53.8%), followed by the Embraer E175 (46.2%).
What mileage do I earn flying SBP–SEA?
Distance-based programs credit off the 848-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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