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 May 2026, Southwest Airlines was the only carrier flying nonstop ONT–SAN; the Boeing 737-800 was the most common aircraft at 100% of departures; flights ran 71% full.
Departures
1
May 2026
Seats
175
both directions
Passengers
125
both directions
Load factor
71.4%
RPM ÷ ASM
Who flies ONT–SAN?
Southwest Airlines was the only carrier to fly nonstop ONT–SAN in May 2026 (1 departures).
- WN
1 departures · 175 seats
Share of departures100.0%71.4%
Load
What plane flies ONT–SAN?
In May 2026, the Boeing 737-800 flew 100% of ONT–SAN departures.
- Boeing 737-800
1 departures · 71.4% load
100.0%
How has ONT–SAN traffic changed?
Nonstop ONT–SAN departures fell from 3 in July 2025 to 1 in May 2026.
Monthly nonstop ONT–SAN traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
3 departures · 269 passengers
82.3%
Load
August 2025
0 departures · 0 passengers
—
Load
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
Nonstop ONT–SAN 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 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 May 2026, the Boeing 737-800 flew the largest share of departures (100.0%).
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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