OnTimeStats

Historical on-time performance

Charlotte to Salt Lake City

1,727 miData through Dec 2025Source: US DOT · BTS

Flights on CLT–SLC arrive on time 76% of the time over the last 12 months.

On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights

based on 869 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Linesbest
    On-time81%
    Medianon time
    p9030 min
    Cancel0.3%
    Flights337
  • American Airlines
    On-time73%
    Medianon time
    p9050 min
    Cancel1.1%
    Flights532

Why flights run late

Delay causes

  • Airline36%
  • Weather11%
  • Air traffic (NAS)19%
  • Late aircraft34%
  • Security1%

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 CLT → SLC

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 62% to 83% on time.

  • Mornings83% on time · p90 25 min · 536 flights
  • Middays81% on time · p90 25 min · 211 flights
  • Evenings75% on time · p90 50 min · 1,669 flights
  • Afternoons71% on time · p90 65 min · 80 flights · limited
  • Overnights62% on time · p90 80 min · 303 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 67% to 80% on time.

  • Wednesdays80% on time · p90 35 min · 394 flights
  • Thursdays80% on time · p90 35 min · 403 flights
  • Tuesdays80% on time · p90 35 min · 393 flights
  • Mondays79% on time · p90 45 min · 405 flights
  • Fridays72% on time · p90 55 min · 405 flights
  • Saturdays71% on time · p90 50 min · 402 flights
  • Sundays67% on time · p90 60 min · 397 flights
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.