OnTimeStats

Historical on-time performance

DCASAN

Washington to San Diego

2,276 miData through Dec 2025Source: US DOT · BTS

Flights on DCA–SAN arrive on time 63% of the time over the last 12 months.

On-time rate63%arrived within 15 min
Median delay5 mintypical arrival
p90 delay45 min1 in 10 flights is worsetail risk
Cancelled0.8%of scheduled flights

based on 245 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlinesbest
    On-time63%
    Median5 min
    p9045 min
    Cancel0.8%
    Flights245

Why flights run late

Delay causes

  • Airline20%
  • Weather9%
  • Air traffic (NAS)71%
  • Late aircraft0%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

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Related pages

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.