Seattle (SEA) to San Jose (SJC)
Flight time
≈ 2h 12m
Bearing
178° S
Seattle (SEA) to San Jose (SJC) is 697 miles (1,122 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SEA–SJC
Filed traffic dataIn May 2026, Alaska Airlines operated the most departures, one of 5 carriers flying nonstop SEA–SJC; the Embraer E175 was the most common aircraft at 45% of departures; flights ran 83% full.
Departures
749
May 2026
Seats
94,020
both directions
Passengers
77,618
both directions
Load factor
82.5%
RPM ÷ ASM
Who flies SEA–SJC?
Alaska Airlines operated the most nonstop SEA–SJC departures in May 2026 (307), one of 5 carriers on the route.
- AS
307 departures · 52,425 seats
Share of departures41.0%81.2%
Load
- OO
299 departures · 22,190 seats
Share of departures39.9%88.4%
Load
- WN
104 departures · 16,338 seats
Share of departures13.9%78.1%
Load
- QX
38 departures · 2,888 seats
Share of departures5.1%88.4%
Load
- UA
1 departures · 179 seats
Share of departures0.1%73.2%
Load
What plane flies SEA–SJC?
In May 2026, the Embraer E175 flew 45% of SEA–SJC departures — more than any other aircraft type.
- Embraer E175
337 departures · 88.4% load
45.0% - Boeing 737-900ER
98 departures · 86.0% load
13.1% - Boeing 737-800
97 departures · 78.8% load
13.0% - Boeing 737 MAX 8
87 departures · 79.5% load
11.6% - Boeing 737 MAX 9
81 departures · 77.4% load
10.8% - Boeing 737-700
49 departures · 78.3% load
6.5%
How has SEA–SJC traffic changed?
Nonstop SEA–SJC departures fell from 815 in June 2025 to 749 in May 2026.
Monthly nonstop SEA–SJC traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
815 departures · 91,312 passengers
81.0%
Load
July 2025
835 departures · 95,911 passengers
81.9%
Load
August 2025
793 departures · 92,631 passengers
84.6%
Load
September 2025
745 departures · 78,179 passengers
75.4%
Load
October 2025
786 departures · 74,095 passengers
72.9%
Load
November 2025
750 departures · 72,302 passengers
75.3%
Load
December 2025
706 departures · 72,269 passengers
79.7%
Load
January 2026
666 departures · 62,933 passengers
71.0%
Load
February 2026
694 departures · 71,182 passengers
74.3%
Load
March 2026
649 departures · 68,899 passengers
81.1%
Load
April 2026
610 departures · 63,962 passengers
80.8%
Load
May 2026
749 departures · 77,618 passengers
82.5%
Load
By direction
Each direction is filed separately — they rarely match.
SJC → SEA
83.9% full
375 departures · 39,530 passengers
SEA → SJC
81.2% full
374 departures · 38,088 passengers
Nonstop SEA–SJC 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
San Jose
US
Norman Y. Mineta San Jose International Airport
Coordinates
37.36°N, 121.93°W
Hemisphere
N · W
Frequently asked
How far is Seattle (SEA) from San Jose (SJC)?
SEA to SJC is 697 miles (1,122 km / 606 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SEA to SJC?
A nonstop covers the 697-mile great-circle distance in roughly 2h 12m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SEA–SJC?
In May 2026, the Embraer E175 flew the largest share of departures (45.0%), followed by the Boeing 737-900ER (13.1%).
What mileage do I earn flying SEA–SJC?
Distance-based programs credit off the 697-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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