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STS to ONT: distance & flight time

Santa Rosa (Charles M. Schulz Sonoma County Airport) → Ontario (Ontario International Airport)

423 mi
681 km · 367 nm
1h 23m
estimated nonstop flight time
Same time
time difference · heading southeast
See live STS→ONT fares Phone-only fares on this route — call free

Flight time details

423 miles nonstop takes roughly 1h 23m gate to gate, flying southeast. 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.

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The two airports

Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.

Alternate airports can cut this fare

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Frequently asked questions

How far is STS from ONT?

The flight distance from Santa Rosa (STS) to Ontario (ONT) is 423 miles (681 km, 367 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from STS to ONT?

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.

What is the cheapest way to fly from STS to ONT?

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STS–ONT that never appear on search engines, with no booking fees.
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