OnTimeStats

Historical on-time performance

Norfolk to Baltimore

159 miData through May 2026Source: US DOT · BTS

Flights on ORF–BWI arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights

based on 1,530 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time81%
    Medianon time
    p9030 min
    Cancel1.6%
    Flights1,530

Why flights run late

Delay causes

  • Airline22%
  • Weather3%
  • Air traffic (NAS)27%
  • Late aircraft49%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline16%
  • Weather68%
  • Air traffic (NAS)16%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 25 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 ORF → 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 — 93% on time.

  • Mornings93% on time · p90 5 min · 1,318 flights
  • Middays88% on time · p90 15 min · 1,315 flights
  • Afternoons75% on time · p90 40 min · 816 flights
  • Evenings73% on time · p90 45 min · 920 flights
  • Overnights56% on time · p90 65 min · 262 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 87% on time.

  • Saturdays87% on time · p90 20 min · 595 flights
  • Wednesdays86% on time · p90 20 min · 651 flights
  • Tuesdays84% on time · p90 25 min · 650 flights
  • Fridays82% on time · p90 30 min · 693 flights
  • Thursdays81% on time · p90 25 min · 692 flights
  • Mondays81% on time · p90 30 min · 690 flights
  • Sundays79% on time · p90 35 min · 660 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.