OnTimeStats

Airport on-time performance

Atlanta

Data through May 2026Source: US DOT · BTS
On-time rate75%flights departing here that arrived on time
p90 delay45 min1 in 10 departures is worse (tail risk)
Cancelled1.8%of scheduled departures
Left the gate on time78%departures that pushed back within 15 min of schedule (DepDel15)

based on 317,109 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 late11%
  • 1–2 hr late4%
  • 2 hr+ late3%
  • Cancelled or diverted2%

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)

  • United Airlinesbest
    On-time79%
    Medianon time
    p9045 min
    Cancel1.4%
    Flights7,431
  • Delta Air Lines
    On-time77%
    Medianon time
    p9040 min
    Cancel1.7%
    Flights239,417
  • Southwest Airlines
    On-time75%
    Medianon time
    p9045 min
    Cancel1.2%
    Flights17,431
  • PSA Airlines
    On-time75%
    Medianon time
    p9055 min
    Cancel4.7%
    Flights3,146
  • American Airlines
    On-time74%
    Medianon time
    p9065 min
    Cancel2.1%
    Flights6,372
  • Alaska Airlines
    On-time73%
    Medianon time
    p9045 min
    Cancel0.8%
    Flights1,273
  • Republic Airways
    On-time73%
    Medianon time
    p9050 min
    Cancel4.3%
    Flights2,216
  • Envoy Air
    On-time72%
    Medianon time
    p9050 min
    Cancel2.8%
    Flights529
  • SkyWest Airlines
    On-time72%
    Medianon time
    p9080 min
    Cancel2.2%
    Flights6,467
  • JetBlue Airways
    On-time68%
    Medianon time
    p9075 min
    Cancel3.5%
    Flights2,469
  • Spirit Airlines
    On-time68%
    Medianon time
    p9075 min
    Cancel3.2%
    Flights4,923
  • Frontier Airlines
    On-time61%
    Medianon time
    p9090 min
    Cancel2.4%
    Flights15,543

Over time

On-time trend

By season

On-time rate by month

When it gets busy

Busiest times at ATL

Historically, departures at ATL peak 10 a.m.–2 p.m. — 23% of scheduled flights leave in that block.

  • 5–10 a.m.22%
  • 10 a.m.–2 p.m.23%
  • 2–5 p.m.18%
  • 5–8 p.m.16%
  • 8 p.m.–midnight20%

Share of 985,903 scheduled departures by planned departure time, 2023-06 .. 2026-05. Historical averages from BTS data — not live airport status.

When flights don't go

Why flights were cancelled

  • Airline50%
  • Weather45%
  • Air traffic (NAS)5%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 5,796 cancellations with a reported cause (BTS reports causes from June 2003).

Where flights go

Busiest routes

ATL → LGA→ATL → MCO→ATL → DFW→ATL → ORD→ATL → FLL→ATL → TPA→ATL → EWR→ATL → DCA→ATL → PHL→ATL → MIA→

Side by side

Compare this airport

Compare with Chicago O'Hare International Airporthead-to-head on-time→Compare with Dallas Fort Worth International Airporthead-to-head on-time→Compare with Denver International Airporthead-to-head on-time→Compare with Los Angeles International Airporthead-to-head on-time→

Will you make a connection at ATL? →

Keep exploring

Related guides

When to arrive at the airportguide→Worst airports for delaysguide→

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.