OnTimeStats

Airport on-time performance

BOI

Boise

Data through Dec 2025Source: US DOT · BTS
On-time rate83%flights departing here that arrived on time
Median delayon timetypical departure delay
p90 delay25 min1 in 10 departures is worsetail risk
Cancelled0.5%of scheduled departures
Left the gate on time85%departures that pushed back within 15 min of schedule (DepDel15)

based on 23,524 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.

80%arrived on time here
(within 15 min, inbound flights)
  • On time80%
  • 15–59 min late14%
  • 1–2 hr late4%
  • 2 hr+ late2%
  • Cancelled or diverted1%

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

Bad day: 1 in 10 flights arrives more than 35 min late.

By airline

Carriers departing here (last 12 months)

Delay = arrival delay (ArrDel15-based)

  • SkyWest Airlinesbest
    On-time86%
    Medianon time
    p9020 min
    Cancel0.3%
    Flights10,227
  • Delta Air Lines
    On-time86%
    Medianon time
    p9020 min
    Cancel0.9%
    Flights2,635
  • Southwest Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel0.2%
    Flights5,014
  • Alaska Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel0.9%
    Flights1,169
  • American Airlines
    On-time76%
    Medianon time
    p9040 min
    Cancel2.0%
    Flights846
  • United Airlines
    On-time75%
    Medianon time
    p9050 min
    Cancel0.4%
    Flights1,547
  • Envoy Air
    On-time65%
    Median5 min
    p9065 min
    Cancel0.0%
    Flights31

Over time

Departure on-time trend

By season

On-time rate by month

Where flights go

Busiest routes

BOI → SLC→BOI → DEN→BOI → SEA→BOI → SFO→BOI → PHX→BOI → LAS→BOI → PDX→BOI → GEG→BOI → LAX→BOI → MSP→
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Will you make a connection at BOI? →

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.