OnTimeStats

Historical on-time performance

Long Beach to Chicago

1,741 miData through Dec 2025Source: US DOT · BTS

Flights on LGB–MDW arrive on time 89% of the time over the last 12 months.

On-time rate89%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 215 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time89%
    Medianon time
    p9015 min
    Cancel0.0%
    Flights215

Why flights run late

Delay causes

  • Airline30%
  • Weather0%
  • Air traffic (NAS)14%
  • Late aircraft56%
  • Security0%

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 LGB → MDW

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 — 94% on time.

  • Mornings94% on time · p90 5 min · 561 flights
  • Middays82% on time · p90 25 min · 816 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 81% to 96% on time.

  • Saturdays96% on time · p90 on time · 134 flights · limited
  • Sundays91% on time · p90 10 min · 183 flights · limited
  • Wednesdays89% on time · p90 10 min · 213 flights
  • Thursdays88% on time · p90 15 min · 210 flights
  • Fridays86% on time · p90 15 min · 212 flights
  • Tuesdays84% on time · p90 15 min · 213 flights
  • Mondays81% on time · p90 25 min · 212 flights
Advertisement

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.