Salt Lake City (SLC) to Ontario (ONT) flights
Delta Air Lines, SkyWest Airlines fly nonstop from Salt Lake City International Airport to Ontario International Airport, with about 26 flights a week in July 2026. The 558-mile flight takes about 1h 46m gate to gate.
- Distance
- 558 mi · 898 km
- Flight time
- 1h 46m
- Airlines
- 2
- Seats filled
- 75%
Airlines flying SLC to ONT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 19 | Airbus A220-300, Airbus A220-100, Boeing 737-800 | 89,997 | 1h 44m |
| SkyWest Airlines | 7 | Embraer E175 | 20,135 | 1h 50m |
| Frontier AirlinesSeasonal or ended | n/a | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 1,535 | 1h 48m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SLC to ONT flight schedule
4 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 8:01am and the last at 10:45pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| DL 3974Delta Air Lines · operated by SkyWest Airlines | 8:01am | 8:52am | 24 | 96% |
| DL 3172Delta Air Lines | 11:27am | 12:16pm | 31 | 86% |
| DL 4443Delta Air Lines · operated by SkyWest Airlines | 3:29pm | 4:24pm | 31 | 90% |
| DL 1614Delta Air Lines | 10:45pm | 11:34pm | 31 | 89% |
Is SLC to ONT on time?
From September 2025 to August 2026, 89% of 1,239 flights arrived within 15 minutes of schedule and 0.9% were cancelled. Flights leaving around 8am were the most punctual (95%), those around 11am the least (85%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (63%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 1,209 | 89% | 8 min | 0.8% |
| Frontier Airlines | 30 | 93% | 7 min | 3.3% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 8am to 9am | 147 | 95% | |
| 11am to 12pm | 358 | 85% | |
| 3pm to 4pm | 343 | 91% | |
| 8pm to 9pm | 36 | 92% | |
| 9pm to 10pm | 59 | 85% | |
| 10pm to 11pm | 253 | 88% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 117 | 10,133 | |
| September 2025 | 110 | 9,319 | |
| October 2025 | 115 | 10,261 | |
| November 2025 | 85 | 8,641 | |
| December 2025 | 91 | 8,840 | |
| January 2026 | 91 | 8,412 | |
| February 2026 | 91 | 8,774 | |
| March 2026 | 90 | 8,659 | |
| April 2026 | 99 | 8,925 | |
| May 2026 | 115 | 10,520 | |
| June 2026 | 113 | 9,458 | |
| July 2026 | 117 | 9,951 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.