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Direct flights from Santa Rosa to Ontario

Did you mean Flights from Ontario to Santa Rosa?

Flightmap/Flights from STS/STS to ONT

Santa Rosa

United States

STS

Charles M. Schulz Sonoma County Airport

Ontario

United States

ONT

Ontario International Airport

Route
Nonstop service available
Distance
423 miles
Marketing airlines
2 airlines
Aircraft
3 aircraft types
Dates
Oct 19, 2026 – Aug 9, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

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Explore these airports and cities

  • Flights from STS
  • Flights to ONT

Santa Rosa to Ontario route overview

Charles M. Schulz Sonoma County Airport (STS) serves Santa Rosa; Ontario International Airport (ONT) serves Ontario.

The airports are 423 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from STS to ONT.

Marketing airlines listed in the current schedule, including codeshare sellers, are Alaska Airlines (AS) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Aug 9, 2027.

Marketing airlines on the Santa Rosa to Ontario route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

  • Alaska Airlines (AS)Codeshare only

Airline alliance affiliations represented: Oneworld

Aircraft flying from STS to ONT

Frequently asked questions

Which airports serve the Santa Rosa to Ontario route?

Charles M. Schulz Sonoma County Airport (STS) is the origin airport and Ontario International Airport (ONT) is the destination airport.

How far is Ontario from Santa Rosa?

STS and ONT are approximately 423 miles apart by great-circle distance.

Are there direct flights from STS to ONT?

Yes. Roame's current schedule feed shows nonstop service from STS to ONT.

Which airlines market flights from STS to ONT?

Marketing airlines listed in the current schedule, including codeshare sellers, are Alaska Airlines (AS) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Which aircraft fly from STS to ONT?

Aircraft listed in the current schedule include 7S7, Embraer 175 (short wing) (E75) and JET.

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