Pasco (PSC) to Seattle (SEA)
Flight time
≈ 1h 09m
Bearing
300° NW
Pasco (PSC) to Seattle (SEA) is 172 miles (276 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies PSC–SEA
Filed traffic dataIn June 2026, Horizon Air operated the most departures, one of 2 carriers flying nonstop PSC–SEA; the Embraer E175 was the most common aircraft at 100% of departures; flights ran 81% full.
Departures
446
June 2026
Seats
33,434
both directions
Passengers
27,103
both directions
Load factor
81.1%
RPM ÷ ASM
Who flies PSC–SEA?
Horizon Air operated the most nonstop PSC–SEA departures in June 2026 (252), one of 2 carriers on the route.
- QX
252 departures · 19,152 seats
Share of departures56.5%84.5%
Load
- OO
194 departures · 14,282 seats
Share of departures43.5%76.5%
Load
What plane flies PSC–SEA?
In June 2026, the Embraer E175 flew 100% of PSC–SEA departures.
- Embraer E175
446 departures · 81.1% load
100.0%
How has PSC–SEA traffic changed?
Nonstop PSC–SEA departures fell from 482 in July 2025 to 446 in June 2026.
Monthly nonstop PSC–SEA traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
482 departures · 31,556 passengers
77.0%
Load
August 2025
508 departures · 30,727 passengers
71.9%
Load
September 2025
453 departures · 29,805 passengers
76.2%
Load
October 2025
458 departures · 30,092 passengers
75.8%
Load
November 2025
421 departures · 29,996 passengers
79.2%
Load
December 2025
468 departures · 34,292 passengers
79.7%
Load
January 2026
408 departures · 29,005 passengers
78.2%
Load
February 2026
362 departures · 25,062 passengers
78.0%
Load
March 2026
395 departures · 26,797 passengers
82.0%
Load
April 2026
418 departures · 25,392 passengers
80.7%
Load
May 2026
540 departures · 31,841 passengers
79.0%
Load
June 2026
446 departures · 27,103 passengers
81.1%
Load
By direction
Each direction is filed separately — they rarely match.
SEA → PSC
80.2% full
224 departures · 13,477 passengers
PSC → SEA
81.9% full
222 departures · 13,626 passengers
Nonstop PSC–SEA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Pasco (PSC) from Seattle (SEA)?
PSC to SEA is 172 miles (276 km / 149 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from PSC to SEA?
A nonstop covers the 172-mile great-circle distance in roughly 1h 09m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies PSC–SEA?
In June 2026, the Embraer E175 flew the largest share of departures (100.0%).
What mileage do I earn flying PSC–SEA?
Distance-based programs credit off the 172-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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