OnTimeStats

Historical on-time performance

Chicago to New York

733 miData through May 2026Source: US DOT · BTS

Flights on ORD–LGA arrive on time 64% of the time over the last 12 months.

On-time rate64%arrived within 15 min
p90 delay85 min1 in 10 flights is worse (tail risk)
Cancelled4.5%of scheduled flights

based on 11,453 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Delta Air Lines
    On-time66%
    Medianon time
    p9090 min
    Cancel4.3%
    Flights2,289
  • United Airlines
    On-time65%
    Medianon time
    p9085 min
    Cancel3.2%
    Flights4,658
  • Republic Airways
    On-time65%
    Medianon time
    p9060 min
    Cancel8.9%
    Flights1,237
  • American Airlines
    On-time61%
    Medianon time
    p9090 min
    Cancel4.2%
    Flights2,937
  • Spirit Airlines
    On-time55%
    Medianon time
    p90120 min
    Cancel8.7%
    Flights288
  • SkyWest Airlines
    On-time39%
    Median10 min
    p90130 min
    Cancel22.7%
    Flights44

Why flights run late

Delay causes

  • Airline22%
  • Weather4%
  • Air traffic (NAS)36%
  • Late aircraft38%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline21%
  • Weather61%
  • Air traffic (NAS)18%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 514 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 ORD → LGA

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 — 83% on time.

  • Mornings83% on time · p90 25 min · 9,949 flights
  • Middays72% on time · p90 60 min · 8,603 flights
  • Afternoons65% on time · p90 85 min · 5,997 flights
  • Overnights61% on time · p90 85 min · 1,829 flights
  • Evenings59% on time · p90 100 min · 6,358 flights

Best day of week

Saturdays are the most reliable day to fly this route — 76% on time.

  • Saturdays76% on time · p90 50 min · 3,123 flights
  • Wednesdays73% on time · p90 70 min · 4,985 flights
  • Tuesdays73% on time · p90 65 min · 5,004 flights
  • Thursdays71% on time · p90 65 min · 4,960 flights
  • Mondays70% on time · p90 80 min · 5,011 flights
  • Fridays69% on time · p90 70 min · 5,012 flights
  • Sundays67% on time · p90 75 min · 4,641 flights

Keep exploring

Related pages

Delay predictorfor this route→ORD airportChicago→LGA airportNew York→United Airlinesairline profile→American Airlinesairline profile→Delta Air Linesairline profile→Seasonal delay patternsguide→

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.