Ontario (ONT) to Salt Lake City (SLC)
Flight time
≈ 1h 55m
Bearing
32° NE
Ontario (ONT) to Salt Lake City (SLC) is 558 miles (898 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ONT–SLC
US DOT T-100 · filed dataIn April 2026, Delta Air Lines operated the most departures, one of 3 carriers flying nonstop ONT–SLC; the Airbus A220-300 was the most common aircraft at 47% of departures; flights ran 76% full.
Departures
198
April 2026
Seats
23,379
both directions
Passengers
17,865
both directions
Load factor
76.4%
passengers ÷ seats
Who flies ONT–SLC?
Delta Air Lines operated the most nonstop ONT–SLC departures in April 2026 (120), one of 3 carriers on the route.
- DL
Delta Air Lines
120 departures · 15,013 seats
Share of departures60.6%86.2%
Load
- OO
SkyWest Airlines
60 departures · 4,356 seats
Share of departures30.3%90.5%
Load
- F9
Frontier Airlines
18 departures · 4,010 seats
Share of departures9.1%24.7%
Load
What plane flies ONT–SLC?
In April 2026, the Airbus A220-300 flew 47% of ONT–SLC departures — more than any other aircraft type.
- Airbus A220-300
94 departures · 85.3% load
47.5% - Embraer E175
60 departures · 90.5% load
30.3% - Airbus A220-100
25 departures · 92.1% load
12.6% - Airbus A321neo
9 departures · 19.2% load
4.5% - Airbus A320neo
5 departures · 30.4% load
2.5% - Airbus A321
4 departures · 31.9% load
2.0% - Boeing 757-200
1 departures · 0.0% load
0.5%
How has ONT–SLC traffic changed?
Nonstop ONT–SLC departures fell from 227 in May 2025 to 198 in April 2026.
Monthly nonstop ONT–SLC traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
227 departures · 20,518 passengers
72.3%
Load
June 2025
227 departures · 21,618 passengers
78.6%
Load
July 2025
232 departures · 21,539 passengers
77.9%
Load
August 2025
234 departures · 19,937 passengers
69.5%
Load
September 2025
220 departures · 18,721 passengers
70.1%
Load
October 2025
230 departures · 19,766 passengers
73.5%
Load
November 2025
171 departures · 16,694 passengers
72.4%
Load
December 2025
181 departures · 17,394 passengers
76.1%
Load
January 2026
182 departures · 16,564 passengers
68.8%
Load
February 2026
180 departures · 17,275 passengers
64.6%
Load
March 2026
181 departures · 17,332 passengers
83.2%
Load
April 2026
198 departures · 17,865 passengers
76.4%
Load
By direction
The DOT files each direction separately — they rarely match.
ONT → SLC
77.1% full
99 departures · 8,940 passengers
SLC → ONT
75.7% full
99 departures · 8,925 passengers
Nonstop ONT–SLC traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Frequently asked
How far is Ontario (ONT) from Salt Lake City (SLC)?
ONT to SLC is 558 miles (898 km / 485 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ONT to SLC?
A nonstop covers the 558-mile great-circle distance in roughly 1h 55m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ONT–SLC?
In April 2026, the Airbus A220-300 flew the largest share of departures (47.5%), followed by the Embraer E175 (30.3%).
What mileage do I earn flying ONT–SLC?
Distance-based programs credit off the 558-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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