Direct (nonstop) flights from Ontario to Santa Rosa
1 airline flys nonstop from Ontario International Airport (ONT) to Charles M Schulz Sonoma Co (STS). It's 423 miles (680 km), about 1h 31m in the air. Operated by Alaska Airlines.
Alaska Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Ontario to Santa Rosa with one stop · direct emits 78 kg CO₂ per passenger
Looking for the return flight?
STS → ONT: Flights from Santa Rosa to OntarioOther direct flights from Ontario
Direct flights from Santa Rosa (STS)
Frequently Asked Questions
How long is the direct flight from Ontario to Santa Rosa?
A nonstop flight from Ontario (ONT) to Santa Rosa (STS) takes approximately 1 hours and 31 minutes. The distance is 423 miles (680 km).
Which airlines fly nonstop from Ontario to Santa Rosa?
Just Alaska Airlines.
Is there a nonstop flight from Ontario to Santa Rosa?
Yes. 1 airline: Alaska Airlines.
How far is Ontario from Santa Rosa?
The flight distance from Ontario to Santa Rosa is 423 miles (680 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as Mumbai to Goa.
What type of aircraft flies from Ontario to Santa Rosa?
At 1h 31m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Ontario to Santa Rosa?
Roughly 78 kg CO2 per passenger one-way. That's about the same as driving 390 km.
Is the return flight from Santa Rosa to Ontario also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Ontario to Santa Rosa?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Ontario International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.