On-time performance

Hartsfield-Jackson Atlanta International (ATL) on-time performance, September 2026

31,886 scheduled airline departures from Atlanta in September 2026, 77.6% of them on time. Measured from FAA departure data, updated every morning.

1 September to 30 September 2026 · KATL · Free to quote with credit to PlaneTrack (CC BY 4.0)

31,886
departures
77.6%
on time (within 15 min)
10.1%
45+ min late
12.5 min
average departure delay

On time, day by day

Share of departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Saturday 12 September at 46.7%. Best: Wednesday 30 September at 88.9%.

60%80%100%2026-09-01: 1,014 departures, 88.6% on time2026-09-02: 1,010 departures, 84.2% on time2026-09-03: 1,079 departures, 73.3% on time2026-09-04: 1,099 departures, 74.1% on time2026-09-05: 984 departures, 74.4% on time2026-09-06: 945 departures, 72.5% on time2026-09-07: 1,056 departures, 83.4% on time2026-09-08: 995 departures, 88.0% on time2026-09-09: 1,010 departures, 86.6% on time2026-09-10: 1,042 departures, 84.5% on time2026-09-11: 1,020 departures, 57.4% on time2026-09-12: 952 departures, 46.7% on time2026-09-13: 1,060 departures, 76.9% on time2026-09-14: 1,121 departures, 78.9% on time2026-09-15: 1,082 departures, 84.8% on time2026-09-16: 1,063 departures, 88.1% on time2026-09-17: 1,129 departures, 81.8% on time2026-09-18: 1,168 departures, 81.2% on time2026-09-19: 1,006 departures, 74.6% on time2026-09-20: 1,082 departures, 56.1% on time2026-09-21: 1,146 departures, 70.1% on time2026-09-22: 1,089 departures, 47.5% on time2026-09-23: 1,065 departures, 83.7% on time2026-09-24: 1,131 departures, 81.8% on time2026-09-25: 1,161 departures, 82.5% on time2026-09-26: 1,014 departures, 85.4% on time2026-09-27: 1,101 departures, 79.5% on time2026-09-28: 1,148 departures, 82.8% on time2026-09-29: 1,068 departures, 87.7% on time2026-09-30: 1,046 departures, 88.9% on time2026-09-01: 88.6% on time (1,014 departures)012026-09-02: 84.2% on time (1,010 departures)2026-09-03: 73.3% on time (1,079 departures)2026-09-04: 74.1% on time (1,099 departures)042026-09-05: 74.4% on time (984 departures)2026-09-06: 72.5% on time (945 departures)2026-09-07: 83.4% on time (1,056 departures)072026-09-08: 88.0% on time (995 departures)2026-09-09: 86.6% on time (1,010 departures)2026-09-10: 84.5% on time (1,042 departures)102026-09-11: 57.4% on time (1,020 departures)2026-09-12: 46.7% on time (952 departures)2026-09-13: 76.9% on time (1,060 departures)132026-09-14: 78.9% on time (1,121 departures)2026-09-15: 84.8% on time (1,082 departures)2026-09-16: 88.1% on time (1,063 departures)162026-09-17: 81.8% on time (1,129 departures)2026-09-18: 81.2% on time (1,168 departures)2026-09-19: 74.6% on time (1,006 departures)192026-09-20: 56.1% on time (1,082 departures)2026-09-21: 70.1% on time (1,146 departures)2026-09-22: 47.5% on time (1,089 departures)222026-09-23: 83.7% on time (1,065 departures)2026-09-24: 81.8% on time (1,131 departures)2026-09-25: 82.5% on time (1,161 departures)252026-09-26: 85.4% on time (1,014 departures)2026-09-27: 79.5% on time (1,101 departures)2026-09-28: 82.8% on time (1,148 departures)282026-09-29: 87.7% on time (1,068 departures)2026-09-30: 88.9% on time (1,046 departures)30

Airlines at ATL, ranked by on-time share

Scheduled airlines with at least 30 departures from ATL in the month. Regional partners (SkyWest, Republic, Envoy and the like) appear under their own names; fractional and charter operators are in the totals but not listed.

AirlineDeparturesOn time45+ min lateAvg delay (min)
Federal Express FDX126100.0%0.0%-14.2
LAN Peru LPE3086.7%3.3%2.0
United Parcel Service UPS14585.5%7.6%6.9
Korean Air KAL8385.5%0.0%2.5
Alaska Airlines ASA12083.3%9.2%11.0
Endeavor Air EDV2,64482.0%8.2%9.0
Aerolitoral SLI7180.3%5.6%13.5
Delta Air Lines DAL22,09380.1%8.6%9.9
WestJet WJA9678.1%3.1%9.1
Jazz (Air Canada Express) JZA10978.0%4.6%9.2
SkyWest SKW47876.4%13.8%15.5
United Airlines UAL67075.7%12.8%17.7
Mesa Airlines ASH5275.0%13.5%21.4
PSA Airlines JIA22473.7%13.4%17.8
Etihad Airways ETD3073.3%13.3%17.2
Avelo Airlines VXP3372.7%9.1%13.7
Republic Airways RPA31771.3%15.5%22.9
Key Lime Air LYM4969.4%6.1%12.3
Air Transport International ATN5269.2%9.6%14.3
Air France AFR5967.8%10.2%20.4
Virgin Atlantic VIR5967.8%18.6%25.7
Southwest Airlines SWA1,24367.5%11.1%16.7
American Airlines AAL67566.8%21.0%29.1
JetBlue JBU26962.5%22.3%28.1
Frontier Airlines FFT1,72957.1%21.7%30.9
Turkish Airlines THY5046.0%18.0%35.8

Destinations with the longest delays

Routes from ATL with at least 20 departures, by average departure delay.

ToFlightsOn timeAvg delay
ANC Anchorage5248.1%56.5
UIO Quito3458.8%41.6
HHH Hilton Head Island3066.7%40.7
DOH Doha2166.7%40.2
QRO Queretaro4264.3%37.1
MIA Miami46364.8%37.0
IST Arnavutköy, Istanbul4746.8%36.2
BOS Boston45253.5%33.7
DUB Dublin3063.3%30.2
FAR Fargo3070.0%30.0

Busiest destinations

The ten routes with the most departures from ATL this month.

ToFlightsOn timeAvg delay
MCO Orlando65968.7%19.5
LGA New York64969.0%21.6
ORD Chicago62367.1%29.2
DCA Washington55768.2%19.1
FLL Fort Lauderdale54775.5%16.1
TPA Tampa51873.0%14.5
PHL Philadelphia50371.6%21.6
DFW Dallas-Fort Worth49771.4%19.2
EWR Newark48374.9%16.3
BWI Baltimore46871.6%14.6

Go deeper: every flight behind these numbers

The airport month-pack has the whole month for one airport: movements by operator and aircraft type, go-arounds, holding, and departure delays by airline and destination, as a web report, PDF and CSV. No account needed.

Get the full month-pack for ATL, $49 Free 7-day sample See a sample month-pack (SFO)

Other months for ATL

September 2026October 2026
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Airline pages for September 2026

Federal ExpressUnited Parcel ServiceKorean AirAlaska AirlinesEndeavor AirDelta Air LinesWestJetJazz (Air Canada Express)SkyWestUnited AirlinesMesa AirlinesPSA AirlinesAvelo AirlinesRepublic AirwaysKey Lime AirAir Transport InternationalAir FranceVirgin AtlanticSouthwest AirlinesAmerican AirlinesJetBlueFrontier AirlinesTurkish Airlines

All US airports and airlines, September 2026

How we measure

On time means the aircraft took off within 15 minutes of its scheduled departure, after subtracting the departure airport's normal taxi time at ATL (FAA SWIM reports wheels-off, not push-back, so the median taxi time of the last 30 days is taken off every flight first). Average delay is the mean of that taxi-adjusted delay over all departures; early departures count as negative minutes, so an operator that routinely leaves early can show a negative average. 45+ min late is the share of departures that left 45 minutes or more behind schedule, the point at which most connections are at risk.

Scope: scheduled airlines only, the same set as the monthly State of the Sky report (operators with published routes; private, fractional and charter operators are left out), so the two publications give the same numbers for the same month. Departures are counted by scheduled day (UTC). Each day's flights are rolled up overnight and published the next morning; the newest day keeps filling in for a day or two and is only shown once it is substantially complete. Figures can differ by a few tenths of a point from the State of the Sky report for the same month: that report is frozen on the 2nd of the following month, while these pages are rebuilt from the live rollup, which recomputes each airport's taxi baseline nightly and re-rolls the last week of the month as late departure times arrive (September 2026 at SFO: 16,398 departures in both, 69.2% on time here against 69.5% in the report).

Source: FAA System Wide Information Management (SWIM) flight plans and departure times, processed by PlaneTrack. Free to quote with credit to PlaneTrack (CC BY 4.0).