On-time performance

Air Transport International (ATN) on-time performance, September 2026

2,548 scheduled Air Transport International departures in US airspace in September 2026, 50.7% of them on time. Measured from FAA departure data, updated every morning.

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

2,548
departures
50.7%
on time (within 15 min)
10.8%
45+ min late
18.5 min
average departure delay

On time, day by day

Share of Air Transport International departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Friday 25 September at 31.7%. Best: Monday 7 September at 70.4%.

50%70%90%2026-09-01: 80 departures, 50.0% on time2026-09-02: 79 departures, 44.3% on time2026-09-03: 82 departures, 43.9% on time2026-09-04: 84 departures, 51.2% on time2026-09-05: 80 departures, 60.0% on time2026-09-06: 78 departures, 59.0% on time2026-09-07: 81 departures, 70.4% on time2026-09-08: 82 departures, 58.5% on time2026-09-09: 82 departures, 47.6% on time2026-09-10: 89 departures, 41.6% on time2026-09-11: 87 departures, 47.1% on time2026-09-12: 85 departures, 51.8% on time2026-09-13: 84 departures, 45.2% on time2026-09-14: 83 departures, 53.0% on time2026-09-15: 88 departures, 48.9% on time2026-09-16: 91 departures, 57.1% on time2026-09-17: 90 departures, 54.4% on time2026-09-18: 95 departures, 49.5% on time2026-09-19: 87 departures, 58.6% on time2026-09-20: 64 departures, 51.6% on time2026-09-21: 83 departures, 38.6% on time2026-09-22: 86 departures, 51.2% on time2026-09-23: 89 departures, 49.4% on time2026-09-24: 84 departures, 32.1% on time2026-09-25: 82 departures, 31.7% on time2026-09-26: 84 departures, 58.3% on time2026-09-27: 89 departures, 55.1% on time2026-09-28: 91 departures, 49.5% on time2026-09-29: 91 departures, 53.8% on time2026-09-30: 98 departures, 57.1% on time2026-09-01: 50.0% on time (80 departures)012026-09-02: 44.3% on time (79 departures)2026-09-03: 43.9% on time (82 departures)2026-09-04: 51.2% on time (84 departures)042026-09-05: 60.0% on time (80 departures)2026-09-06: 59.0% on time (78 departures)2026-09-07: 70.4% on time (81 departures)072026-09-08: 58.5% on time (82 departures)2026-09-09: 47.6% on time (82 departures)2026-09-10: 41.6% on time (89 departures)102026-09-11: 47.1% on time (87 departures)2026-09-12: 51.8% on time (85 departures)2026-09-13: 45.2% on time (84 departures)132026-09-14: 53.0% on time (83 departures)2026-09-15: 48.9% on time (88 departures)2026-09-16: 57.1% on time (91 departures)162026-09-17: 54.4% on time (90 departures)2026-09-18: 49.5% on time (95 departures)2026-09-19: 58.6% on time (87 departures)192026-09-20: 51.6% on time (64 departures)2026-09-21: 38.6% on time (83 departures)2026-09-22: 51.2% on time (86 departures)222026-09-23: 49.4% on time (89 departures)2026-09-24: 32.1% on time (84 departures)2026-09-25: 31.7% on time (82 departures)252026-09-26: 58.3% on time (84 departures)2026-09-27: 55.1% on time (89 departures)2026-09-28: 49.5% on time (91 departures)282026-09-29: 53.8% on time (91 departures)2026-09-30: 57.1% on time (98 departures)30

Airports, ranked by on-time share

Airports with at least 30 Air Transport International departures in the month.

AirportDeparturesOn time45+ min lateAvg delay (min)
JFK New York5882.8%1.7%-3.4
ILN Wilmington28179.4%6.4%3.2
CLT Charlotte6973.9%4.3%6.2
SFO San Francisco3171.0%0.0%2.0
ATL Atlanta5269.2%9.6%14.3
ANC Anchorage3268.8%3.1%5.5
BDL Windsor Locks9963.6%5.1%17.6
ABE Allentown12460.5%11.3%13.7
DEN Denver12159.5%9.9%20.1
SMF Sacramento5957.6%0.0%13.7
PHX Phoenix8956.2%5.6%17.1
AUS Austin5855.2%5.2%9.8
SEA Seattle9453.2%6.4%15.7
RIC Richmond5350.9%13.2%20.3
HNL Honolulu7749.4%16.9%20.5
MIA Miami3644.4%16.7%21.9
LAL Lakeland6643.9%9.1%26.9
BWI Baltimore9741.2%14.4%22.3
ONT Ontario15139.1%10.6%21.8
IAH Houston19337.8%9.8%24.6
CVG Cincinnati21029.0%22.4%33.0
AFW Fort Worth11527.8%28.7%36.2
RFD Chicago/Rockford9325.8%9.7%24.2
SBD San Bernardino14324.5%10.5%26.9

Least punctual routes

Routes with at least 20 Air Transport International departures, lowest on-time share first.

RouteFlightsOn timeAvg delay
SBD to SEA San Bernardino to Seattle316.5%33.1
ONT to IAH Ontario to Houston229.1%32.0
IAH to BWI Houston to Baltimore2910.3%32.0
SBD to BWI San Bernardino to Baltimore3013.3%24.3
RFD to SBD Chicago/Rockford to San Bernardino3013.3%26.9
CVG to IAH Cincinnati to Houston2714.8%46.0
IAH to CVG Houston to Cincinnati2416.7%29.0
CVG to RIC Cincinnati to Richmond2817.9%28.7
BWI to IAH Baltimore to Houston2817.9%34.1
RFD to BDL Chicago/Rockford to Windsor Locks2718.5%24.4

Busiest routes

The ten routes Air Transport International flew most this month.

RouteFlightsOn timeAvg delay
ILN to ABE Wilmington to Allentown5680.4%-0.0
ONT to HNL Ontario to Honolulu4454.5%20.7
ANC to SEA Anchorage to Seattle3268.8%5.5
SEA to ANC Seattle to Anchorage3281.2%6.8
SBD to SEA San Bernardino to Seattle316.5%33.1
HNL to ONT Honolulu to Ontario3063.3%23.0
ABE to RFD Allentown to Chicago/Rockford3083.3%2.8
AFW to SFO Fort Worth to San Francisco3040.0%37.0
SBD to BWI San Bernardino to Baltimore3013.3%24.3
PHX to SMF Phoenix to Sacramento3056.7%22.5

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 ILN, $49 Free 7-day sample See a sample month-pack (SFO)

Other months for Air Transport International

September 2026

Airport pages for September 2026

CVGIAHONTABEDENAFWBDLBWISEARFDPHXHNLCLTSMFJFKAUSRICATLMIAANCSFO

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 (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).