Flights from Ontario (ONT) to San Francisco (SFO)

Route intelligence for ONT → SFO: direct flights, stopover options, and timetable coverage in one place.

Show route on mapAll flights from ONTAll flights to SFO

Direct flights

2 direct option(s) across 2 airline(s).

  • Frontier Airlines · 0 min · 0 km
  • United Airlines · 70 min · 585 km

Explore these airlines on this city pair

Open each airline route-map page to compare broader network depth before committing to a nonstop or one-stop strategy.

Frontier Airlines route map →United Airlines route map →

Stopover options

  • 1 stop(s) · 3h 8m · ONT → SFO
  • 1 stop(s) · 3h 20m · ONT → SFO
  • 1 stop(s) · 3h 20m · ONT → SFO
  • 1 stop(s) · 3h 20m · ONT → SFO
  • 1 stop(s) · 4h 6m · ONT → SFO
  • 1 stop(s) · 4h 6m · ONT → SFO
  • 1 stop(s) · 4h 6m · ONT → SFO
  • 1 stop(s) · 4h 6m · ONT → SFO
  • 1 stop(s) · 4h 6m · ONT → SFO
  • 1 stop(s) · 4h 6m · ONT → SFO
  • 1 stop(s) · 4h 28m · ONT → SFO
  • 1 stop(s) · 4h 28m · ONT → SFO

Timetable coverage

Published flight numbers: AC4080, UA2363, AC4424, UA6040, AC4015, CM1360, EK6212, UA1375, AC4112, CM2528, UA1665

Flight number: AC 4080

Operating days: 1, 2, 3, 4, 5, 6, 7

  • ONT 06:00 → SFO 07:29

Plan this city pair

Compare nearby alternatives and airline networks to decide whether a direct trip, one-stop connection, or reverse search gives you better options.

Explore all departures from ONT →Explore all arrivals to SFO →Compare airline network coverage →Browse airports by country →

Route planning checklist

  • Compare direct duration with one-stop total duration before committing to a fare.
  • Check inbound alternatives on flights to SFO when return timing is important.
  • Use Guides for alliance and hub strategy playbooks.
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