Historical on-time performance
Salt Lake City to Ontario
Flights on SLC–ONT arrive on time 87% of the time over the last 12 months.
based on 1,046 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- SkyWest AirlinesOn-time93%Medianon timep905 minCancel0.0%Flights140
- Delta Air LinesOn-time86%Medianon timep9020 minCancel1.2%Flights906
Why flights run late
Delay causes
- Airline64%
- Weather3%
- Air traffic (NAS)8%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline100%
- Weather0%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 11 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SLC → ONT
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 84% to 93% on time.
- Mornings93% on time · p90 5 min · 184 flights · limited
- Afternoons91% on time · p90 10 min · 1,075 flights
- Middays88% on time · p90 15 min · 1,142 flights
- Overnights84% on time · p90 20 min · 1,104 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 90% on time.
- Tuesdays90% on time · p90 10 min · 508 flights
- Wednesdays89% on time · p90 15 min · 511 flights
- Fridays89% on time · p90 10 min · 526 flights
- Thursdays87% on time · p90 15 min · 539 flights
- Saturdays87% on time · p90 15 min · 455 flights
- Sundays86% on time · p90 20 min · 530 flights
- Mondays85% on time · p90 20 min · 519 flights
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