Ontario (ONT) to San Francisco (SFO)
Flight time
≈ 1h 32m
Bearing
314° NW
Ontario (ONT) to San Francisco (SFO) is 363 miles (585 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ONT–SFO
Filed traffic dataIn July 2026, United Airlines operated the most departures, one of 4 carriers flying nonstop ONT–SFO; the Boeing 737 MAX 9 was the most common aircraft at 36% of departures; flights ran 62% full.
Departures
248
July 2026
Seats
38,102
both directions
Passengers
23,572
both directions
Load factor
61.9%
RPM ÷ ASM
Who flies ONT–SFO?
United Airlines operated the most nonstop ONT–SFO departures in July 2026 (125), one of 4 carriers on the route.
- UA
125 departures · 21,946 seats
Share of departures50.4%63.5%
Load
- F9
61 departures · 11,562 seats
Share of departures24.6%50.9%
Load
- OO
60 departures · 4,320 seats
Share of departures24.2%83.8%
Load
- WN
2 departures · 274 seats
Share of departures0.8%49.6%
Load
What plane flies ONT–SFO?
In July 2026, the Boeing 737 MAX 9 flew 36% of ONT–SFO departures — more than any other aircraft type.
- Boeing 737 MAX 9
89 departures · 61.9% load
35.9% - Airbus A320neo
42 departures · 53.5% load
16.9% - Embraer E175
34 departures · 82.1% load
13.7% - Boeing 737-800
31 departures · 69.6% load
12.5% - Bombardier CRJ-700
26 departures · 86.2% load
10.5% - Airbus A321neo
11 departures · 47.2% load
4.4% - Airbus A320
8 departures · 42.3% load
3.2% - Boeing 737-900ER
3 departures · 65.7% load
1.2% - Boeing 737 MAX 8
2 departures · 43.1% load
0.8% - Boeing 737-700
2 departures · 49.6% load
0.8%
How has ONT–SFO traffic changed?
Nonstop ONT–SFO departures rose from 216 in August 2025 to 248 in July 2026.
Monthly nonstop ONT–SFO traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
216 departures · 29,272 passengers
87.0%
Load
September 2025
216 departures · 29,774 passengers
87.7%
Load
October 2025
229 departures · 32,812 passengers
88.0%
Load
November 2025
207 departures · 27,966 passengers
81.0%
Load
December 2025
206 departures · 22,971 passengers
80.6%
Load
January 2026
184 departures · 15,958 passengers
57.6%
Load
February 2026
160 departures · 17,040 passengers
67.6%
Load
March 2026
204 departures · 23,277 passengers
72.9%
Load
April 2026
251 departures · 24,101 passengers
59.3%
Load
May 2026
251 departures · 25,781 passengers
61.8%
Load
June 2026
240 departures · 23,805 passengers
65.1%
Load
July 2026
248 departures · 23,572 passengers
61.9%
Load
By direction
Each direction is filed separately — they rarely match.
SFO → ONT
59.6% full
126 departures · 11,724 passengers
ONT → SFO
64.3% full
122 departures · 11,848 passengers
Nonstop ONT–SFO traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Ontario (ONT) from San Francisco (SFO)?
ONT to SFO is 363 miles (585 km / 316 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ONT to SFO?
A nonstop covers the 363-mile great-circle distance in roughly 1h 32m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ONT–SFO?
In July 2026, the Boeing 737 MAX 9 flew the largest share of departures (35.9%), followed by the Airbus A320neo (16.9%).
What mileage do I earn flying ONT–SFO?
Distance-based programs credit off the 363-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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