OnTimeStats

Historical on-time performance

Phoenix to Baltimore

1,999 miData through Dec 2025Source: US DOT · BTS

Flights on PHX–BWI arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 1,307 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel1.0%
    Flights1,307

Why flights run late

Delay causes

  • Airline37%
  • Weather1%
  • Air traffic (NAS)17%
  • Late aircraft44%
  • Security1%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly PHX → BWI

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 89% on time.

  • Mornings89% on time · p90 10 min · 1,367 flights
  • Overnights83% on time · p90 25 min · 396 flights
  • Middays75% on time · p90 35 min · 813 flights
  • Afternoons69% on time · p90 40 min · 333 flights
  • Evenings66% on time · p90 50 min · 824 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 80% on time.

  • Tuesdays80% on time · p90 30 min · 523 flights
  • Saturdays80% on time · p90 30 min · 527 flights
  • Mondays79% on time · p90 30 min · 544 flights
  • Sundays79% on time · p90 30 min · 541 flights
  • Wednesdays79% on time · p90 25 min · 521 flights
  • Thursdays77% on time · p90 30 min · 534 flights
  • Fridays75% on time · p90 35 min · 543 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.