Palm Springs (PSP) to Santa Rosa (STS)
Flight time
≈ 1h 45m
Bearing
314° NW
Palm Springs (PSP) to Santa Rosa (STS) is 478 miles (768 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies PSP–STS
Filed traffic dataIn May 2026, SkyWest Airlines was the only carrier flying nonstop PSP–STS; the Embraer E175 was the most common aircraft at 100% of departures; flights ran 51% full.
Departures
18
May 2026
Seats
1,368
both directions
Passengers
697
both directions
Load factor
50.9%
RPM ÷ ASM
Who flies PSP–STS?
SkyWest Airlines was the only carrier to fly nonstop PSP–STS in May 2026 (18 departures).
- OO
18 departures · 1,368 seats
Share of departures100.0%50.9%
Load
What plane flies PSP–STS?
In May 2026, the Embraer E175 flew 100% of PSP–STS departures.
- Embraer E175
18 departures · 50.9% load
100.0%
How has PSP–STS traffic changed?
Nonstop PSP–STS departures rose from 4 in June 2025 to 18 in May 2026.
Monthly nonstop PSP–STS traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
4 departures · 250 passengers
41.9%
Load
July 2025
0 departures · 0 passengers
—
Load
August 2025
0 departures · 0 passengers
—
Load
September 2025
1 departures · 70 passengers
92.1%
Load
October 2025
8 departures · 319 passengers
52.5%
Load
November 2025
43 departures · 2,079 passengers
63.6%
Load
December 2025
41 departures · 1,853 passengers
59.5%
Load
January 2026
44 departures · 2,012 passengers
61.5%
Load
February 2026
40 departures · 2,275 passengers
74.8%
Load
March 2026
44 departures · 2,629 passengers
78.6%
Load
April 2026
42 departures · 2,031 passengers
63.6%
Load
May 2026
18 departures · 697 passengers
50.9%
Load
By direction
Each direction is filed separately — they rarely match.
PSP → STS
56.0% full
9 departures · 383 passengers
STS → PSP
45.9% full
9 departures · 314 passengers
Nonstop PSP–STS 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 Palm Springs (PSP) from Santa Rosa (STS)?
PSP to STS is 478 miles (768 km / 415 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from PSP to STS?
A nonstop covers the 478-mile great-circle distance in roughly 1h 45m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies PSP–STS?
In May 2026, the Embraer E175 flew the largest share of departures (100.0%).
What mileage do I earn flying PSP–STS?
Distance-based programs credit off the 478-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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