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ONT to STS: distance & flight time
Ontario (Ontario International Airport) → Santa Rosa (Charles M. Schulz Sonoma County Airport)
423 mi
681 km · 367 nm
1h 23m
estimated nonstop flight time
Same time
time difference · heading northwest
See live ONT→STS fares Phone-only fares on this route — call free
Flight time details
423 miles nonstop takes roughly 1h 23m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- STS — Charles M. Schulz Sonoma County Airport · Santa Rosa, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Near STS
- SFO · San Francisco International Airport66 mi away
- NOT · Marin County Airport - Gnoss Field29 mi away
- APC · Napa County Airport35 mi away
- UKI · Ukiah Municipal Airport47 mi away
Frequently asked questions
How far is ONT from STS?
The flight distance from Ontario (ONT) to Santa Rosa (STS) is 423 miles (681 km, 367 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to STS?
A nonstop flight takes about 1h 23m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ONT to STS?
Nonstop service on ONT–STS depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 23m nonstop estimate.
What is the cheapest way to fly from ONT to STS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–STS that never appear on search engines, with no booking fees.
Why are some ONT to STS fares phone-only?
Consolidator contracts let us sell certain ONT–STS tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.