OnTimeStats

Airport on-time performance

ORD

Chicago

Data through Dec 2025Source: US DOT · BTS
On-time rate72%flights departing here that arrived on time
Median delayon timetypical departure delay
p90 delay60 min1 in 10 departures is worsetail risk
Cancelled1.7%of scheduled departures
Left the gate on time75%departures that pushed back within 15 min of schedule (DepDel15)

based on 325,173 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

As a connection hub

Arriving here (inbound performance)

These figures reflect inbound flights arriving at this airport — relevant for connections and layovers.

73%arrived on time here
(within 15 min, inbound flights)
  • On time73%
  • 15–59 min late15%
  • 1–2 hr late5%
  • 2 hr+ late5%
  • Cancelled or diverted2%

Arrival outcomes for inbound flights. Last segment = cancelled or diverted.

Bad day: 1 in 10 flights arrives more than 60 min late.

By airline

Carriers departing here (last 12 months)

Delay = arrival delay (ArrDel15-based)

  • Republic Airwaysbest
    On-time77%
    Medianon time
    p9045 min
    Cancel2.3%
    Flights26,138
  • United Airlines
    On-time75%
    Medianon time
    p9050 min
    Cancel0.8%
    Flights93,254
  • JetBlue Airways
    On-time75%
    Medianon time
    p9065 min
    Cancel2.0%
    Flights1,039
  • Southwest Airlines
    On-time75%
    Medianon time
    p9050 min
    Cancel0.8%
    Flights4,365
  • Spirit Airlines
    On-time75%
    Medianon time
    p9055 min
    Cancel1.5%
    Flights5,027
  • Envoy Air
    On-time74%
    Medianon time
    p9045 min
    Cancel2.1%
    Flights42,853
  • Delta Air Lines
    On-time72%
    Medianon time
    p9070 min
    Cancel1.6%
    Flights11,088
  • American Airlines
    On-time69%
    Medianon time
    p9070 min
    Cancel1.9%
    Flights54,021
  • Alaska Airlines
    On-time68%
    Medianon time
    p9055 min
    Cancel1.7%
    Flights2,892
  • SkyWest Airlines
    On-time67%
    Medianon time
    p9080 min
    Cancel2.4%
    Flights59,565
  • Frontier Airlines
    On-time65%
    Medianon time
    p9090 min
    Cancel2.6%
    Flights1,447
  • PSA Airlines
    On-time56%
    Medianon time
    p90155 min
    Cancel5.3%
    Flights1,704

Over time

Departure on-time trend

By season

On-time rate by month

Where flights go

Busiest routes

ORD → LGA→ORD → MSP→ORD → LAX→ORD → DFW→ORD → ATL→ORD → DCA→ORD → BOS→ORD → EWR→ORD → PHL→ORD → SFO→
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Will you make a connection at ORD? →

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.