OnTimeStats

Historical on-time performance

Los Angeles to Baltimore

2,329 miData through May 2026Source: US DOT · BTS

Flights on LAX–BWI arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 1,733 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time90%
    Medianon time
    p9010 min
    Cancel0.4%
    Flights570
  • Southwest Airlines
    On-time80%
    Medianon time
    p9025 min
    Cancel0.8%
    Flights1,042
  • Spirit Airlines
    On-time74%
    Medianon time
    p9030 min
    Cancel0.8%
    Flights121

Why flights run late

Delay causes

  • Airline41%
  • Weather0%
  • Air traffic (NAS)24%
  • Late aircraft35%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline9%
  • Weather82%
  • Air traffic (NAS)9%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 11 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 LAX → 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 — 88% on time.

  • Mornings88% on time · p90 15 min · 1,861 flights
  • Overnights82% on time · p90 25 min · 1,800 flights
  • Middays76% on time · p90 35 min · 779 flights
  • Afternoons68% on time · p90 55 min · 605 flights
  • Evenings67% on time · p90 40 min · 112 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 84% on time.

  • Tuesdays84% on time · p90 20 min · 700 flights
  • Wednesdays84% on time · p90 20 min · 711 flights
  • Saturdays82% on time · p90 25 min · 711 flights
  • Mondays81% on time · p90 25 min · 783 flights
  • Thursdays80% on time · p90 25 min · 788 flights
  • Sundays79% on time · p90 30 min · 746 flights
  • Fridays79% on time · p90 30 min · 779 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.