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ONT to SQL: distance & flight time
Ontario (Ontario International Airport) → San Carlos (San Carlos Airport)
353 mi
569 km · 307 nm
1h 24m
estimated nonstop flight time
Same time
time difference · heading northwest
See live ONT→SQL fares Phone-only fares on this route — call free
Flight time details
353 miles nonstop takes roughly 1h 24m 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
- SQL — San Carlos Airport · San Carlos, 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 SQL
- SFO · San Francisco International Airport10 mi away
- PAO · Palo Alto Airport of Santa Clara County8 mi away
- HWD · Hayward Executive Airport12 mi away
- NUQ · Moffett Federal Airfield13 mi away
Frequently asked questions
How far is ONT from SQL?
The flight distance from Ontario (ONT) to San Carlos (SQL) is 353 miles (569 km, 307 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to SQL?
A nonstop flight takes about 1h 24m 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 ONT to SQL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–SQL that never appear on search engines, with no booking fees.