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.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies ONT–SFO
Filed traffic dataIn May 2026, United Airlines operated the most departures, one of 3 carriers flying nonstop ONT–SFO; the Boeing 737 MAX 9 was the most common aircraft at 38% of departures; flights ran 62% full.
Departures
251
May 2026
Seats
41,745
both directions
Passengers
25,781
both directions
Load factor
61.8%
RPM ÷ ASM
Who flies ONT–SFO?
United Airlines operated the most nonstop ONT–SFO departures in May 2026 (191), one of 3 carriers on the route.
- UA
191 departures · 32,421 seats
Share of departures76.1%58.9%
Load
- F9
38 departures · 7,784 seats
Share of departures15.1%70.9%
Load
- OO
22 departures · 1,540 seats
Share of departures8.8%75.1%
Load
What plane flies ONT–SFO?
In May 2026, the Boeing 737 MAX 9 flew 38% of ONT–SFO departures — more than any other aircraft type.
- Boeing 737 MAX 9
96 departures · 57.9% load
38.3% - Airbus A320
32 departures · 56.2% load
12.8% - Boeing 737-800
30 departures · 63.0% load
11.9% - Boeing 737-900ER
23 departures · 60.1% load
9.2% - Embraer E175
22 departures · 75.1% load
8.8% - Airbus A320neo
20 departures · 73.0% load
8.0% - Airbus A321neo
14 departures · 67.8% load
5.6% - Airbus A319
8 departures · 62.5% load
3.2% - Airbus A321
4 departures · 72.9% load
1.6% - Boeing 737 MAX 8
2 departures · 63.5% load
0.8%
How has ONT–SFO traffic changed?
Nonstop ONT–SFO departures rose from 207 in June 2025 to 251 in May 2026.
Monthly nonstop ONT–SFO traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
207 departures · 30,106 passengers
93.4%
Load
July 2025
208 departures · 29,935 passengers
91.4%
Load
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
By direction
Each direction is filed separately — they rarely match.
SFO → ONT
60.7% full
126 departures · 12,561 passengers
ONT → SFO
62.8% full
125 departures · 13,220 passengers
Nonstop ONT–SFO traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 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 May 2026, the Boeing 737 MAX 9 flew the largest share of departures (38.3%), followed by the Airbus A320 (12.8%).
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.
Keep exploring
Every route below is its own page.
Other routes from SFO
Popular long-haul routes