Ontario (ONT) to San Diego (SAN)
Flight time
≈ 0h 59m
Bearing
165° S
Ontario (ONT) to San Diego (SAN) is 94 miles (152 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ONT–SAN
Filed traffic dataIn July 2026, Southwest Airlines operated the most departures, one of 2 carriers flying nonstop ONT–SAN; the Boeing 737-700 was the most common aircraft at 33% of departures; flights ran 71% full.
Departures
6
July 2026
Seats
998
both directions
Passengers
713
both directions
Load factor
71.4%
RPM ÷ ASM
Who flies ONT–SAN?
Southwest Airlines operated the most nonstop ONT–SAN departures in July 2026 (4), one of 2 carriers on the route.
- WN
4 departures · 624 seats
Share of departures66.7%57.4%
Load
- DL
2 departures · 374 seats
Share of departures33.3%94.9%
Load
What plane flies ONT–SAN?
In July 2026, the Boeing 737-700 flew 33% of ONT–SAN departures — more than any other aircraft type.
- Boeing 737-700
2 departures · 51.8% load
33.3% - Boeing 737-800
1 departures · 61.1% load
16.7% - Airbus A321neo
1 departures · 97.9% load
16.7% - Boeing 737 MAX 8
1 departures · 62.3% load
16.7% - Boeing 737-900ER
1 departures · 91.7% load
16.7%
How has ONT–SAN traffic changed?
Nonstop ONT–SAN departures held steady at about 6 a month between September 2025 and July 2026.
Monthly nonstop ONT–SAN traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
September 2025
6 departures · 711 passengers
70.9%
Load
October 2025
15 departures · 1,018 passengers
39.2%
Load
November 2025
4 departures · 121 passengers
19.6%
Load
December 2025
11 departures · 1,256 passengers
73.9%
Load
January 2026
18 departures · 2,004 passengers
72.3%
Load
February 2026
8 departures · 841 passengers
85.5%
Load
March 2026
7 departures · 1,069 passengers
86.4%
Load
April 2026
1 departures · 154 passengers
88.0%
Load
May 2026
1 departures · 125 passengers
71.4%
Load
June 2026
0 departures · 0 passengers
—
Load
July 2026
6 departures · 713 passengers
71.4%
Load
Nonstop ONT–SAN 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 Diego (SAN)?
ONT to SAN is 94 miles (152 km / 82 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ONT to SAN?
A nonstop covers the 94-mile great-circle distance in roughly 0h 59m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ONT–SAN?
In July 2026, the Boeing 737-700 flew the largest share of departures (33.3%), followed by the Boeing 737-800 (16.7%).
What mileage do I earn flying ONT–SAN?
Distance-based programs credit off the 94-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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