Historical on-time performance
Salt Lake City to Raleigh-durham
1,823 miData through Dec 2025Source: US DOT · BTS
Flights on SLC–RDU arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 405 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time87%Medianon timep9015 minCancel0.5%Flights405
Why flights run late
Delay causes
- Airline50%
- Weather5%
- Air traffic (NAS)13%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SLC → RDU
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 73% to 87% on time.
- Middays87% on time · p90 20 min · 918 flights
- Evenings83% on time · p90 30 min · 156 flights · limited
- Overnights73% on time · p90 50 min · 118 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 92% on time.
- Tuesdays92% on time · p90 10 min · 170 flights · limited
- Wednesdays86% on time · p90 20 min · 175 flights · limited
- Thursdays86% on time · p90 20 min · 171 flights · limited
- Mondays84% on time · p90 20 min · 177 flights · limited
- Sundays83% on time · p90 35 min · 180 flights · limited
- Fridays82% on time · p90 25 min · 173 flights · limited
- Saturdays80% on time · p90 35 min · 176 flights · limited
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