OnTimeStats

Historical on-time performance

Albany to Chicago

717 miData through May 2026Source: US DOT · BTS

Flights on ALB–MDW arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 695 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time79%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights695

Why flights run late

Delay causes

  • Airline23%
  • Weather5%
  • Air traffic (NAS)29%
  • Late aircraft42%
  • Security1%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline10%
  • Weather90%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 10 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 ALB → MDW

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 91% on time.

  • Mornings91% on time · p90 10 min · 1,026 flights
  • Middays79% on time · p90 35 min · 121 flights · limited
  • Evenings73% on time · p90 50 min · 637 flights
  • Overnights63% on time · p90 60 min · 155 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 86% on time.

  • Thursdays86% on time · p90 20 min · 307 flights
  • Fridays83% on time · p90 30 min · 310 flights
  • Tuesdays83% on time · p90 35 min · 289 flights
  • Mondays82% on time · p90 30 min · 308 flights
  • Saturdays80% on time · p90 40 min · 215 flights
  • Wednesdays80% on time · p90 30 min · 289 flights
  • Sundays73% on time · p90 60 min · 284 flights

Keep exploring

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.