OnTimeStats

Historical on-time performance

Manchester NH to Baltimore

377 miData through May 2026Source: US DOT · BTS

Flights on MHT–BWI arrive on time 86% of the time over the last 12 months.

On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights

based on 1,710 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time86%
    Medianon time
    p9020 min
    Cancel0.8%
    Flights1,710

Why flights run late

Delay causes

  • Airline27%
  • Weather0%
  • Air traffic (NAS)29%
  • Late aircraft44%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather69%
  • Air traffic (NAS)31%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 13 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 MHT → BWI

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 — 94% on time.

  • Mornings94% on time · p90 5 min · 1,794 flights
  • Middays87% on time · p90 20 min · 1,425 flights
  • Afternoons82% on time · p90 30 min · 977 flights
  • Evenings74% on time · p90 45 min · 653 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 83% to 91% on time.

  • Thursdays91% on time · p90 10 min · 751 flights
  • Wednesdays88% on time · p90 15 min · 686 flights
  • Tuesdays88% on time · p90 15 min · 685 flights
  • Fridays86% on time · p90 25 min · 759 flights
  • Saturdays86% on time · p90 20 min · 583 flights
  • Sundays85% on time · p90 20 min · 640 flights
  • Mondays83% on time · p90 20 min · 756 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.