OnTimeStats

Historical on-time performance

Windsor Locks to Atlanta

859 miData through May 2026Source: US DOT · BTS

Flights on BDL–ATL arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled2.1%of scheduled flights

based on 2,214 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Lines
    On-time80%
    Medianon time
    p9035 min
    Cancel2.1%
    Flights2,214

Why flights run late

Delay causes

  • Airline41%
  • Weather4%
  • Air traffic (NAS)21%
  • Late aircraft34%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline47%
  • Weather51%
  • Air traffic (NAS)2%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 47 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 BDL → ATL

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 77% to 86% on time.

  • Mornings86% on time · p90 20 min · 2,483 flights
  • Middays84% on time · p90 25 min · 1,475 flights
  • Afternoons80% on time · p90 35 min · 1,220 flights
  • Evenings77% on time · p90 50 min · 1,354 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 86% on time.

  • Wednesdays86% on time · p90 20 min · 880 flights
  • Tuesdays86% on time · p90 25 min · 887 flights
  • Thursdays85% on time · p90 25 min · 1,012 flights
  • Fridays82% on time · p90 35 min · 986 flights
  • Saturdays82% on time · p90 30 min · 790 flights
  • Mondays81% on time · p90 25 min · 987 flights
  • Sundays77% on time · p90 40 min · 1,001 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.