Ontario (ONT) to Santa Rosa (STS)
Flight time
≈ 1h 39m
Bearing
318° NW
Ontario (ONT) to Santa Rosa (STS) is 423 miles (681 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 ONT–STS
US DOT T-100 · filed dataIn April 2026, SkyWest Airlines was the only carrier flying nonstop ONT–STS; the Embraer E175 was the most common aircraft at 100% of departures; flights ran 58% full.
Departures
60
April 2026
Seats
4,560
both directions
Passengers
2,637
both directions
Load factor
57.8%
passengers ÷ seats
Who flies ONT–STS?
SkyWest Airlines was the only carrier to fly nonstop ONT–STS in April 2026 (60 departures).
- OO
SkyWest Airlines
60 departures · 4,560 seats
Share of departures100.0%57.8%
Load
What plane flies ONT–STS?
In April 2026, the Embraer E175 flew 100% of ONT–STS departures.
- Embraer E175
60 departures · 57.8% load
100.0%
How has ONT–STS traffic changed?
Nonstop ONT–STS departures rose from 2 in December 2025 to 60 in April 2026.
Monthly nonstop ONT–STS traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
December 2025
2 departures · 0 passengers
0.0%
Load
January 2026
0 departures · 0 passengers
—
Load
February 2026
0 departures · 0 passengers
—
Load
March 2026
28 departures · 1,347 passengers
63.3%
Load
April 2026
60 departures · 2,637 passengers
57.8%
Load
By direction
The DOT files each direction separately — they rarely match.
ONT → STS
61.2% full
30 departures · 1,396 passengers
STS → ONT
54.4% full
30 departures · 1,241 passengers
Nonstop ONT–STS 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 Ontario (ONT) from Santa Rosa (STS)?
ONT to STS is 423 miles (681 km / 367 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ONT to STS?
A nonstop covers the 423-mile great-circle distance in roughly 1h 39m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ONT–STS?
In April 2026, the Embraer E175 flew the largest share of departures (100.0%).
What mileage do I earn flying ONT–STS?
Distance-based programs credit off the 423-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.
Other routes from ONT
Popular long-haul routes