British Airways (BAW) on-time performance, September 2026
3,226 scheduled British Airways departures in US airspace in September 2026, 66.2% of them on time. Measured from FAA departure data, updated every morning.
On time, day by day
Share of British Airways departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Tuesday 22 September at 45.3%. Best: Monday 7 September at 82.6%.
Airports, ranked by on-time share
Airports with at least 30 British Airways departures in the month.
| Airport | Departures | On time | 45+ min late | Avg delay (min) |
|---|---|---|---|---|
| YVR Vancouver | 64 | 84.4% | 7.8% | 9.8 |
| IAH Houston | 57 | 82.5% | 8.8% | 12.2 |
| LGW London | 126 | 78.6% | 7.9% | 8.7 |
| LAS Las Vegas | 51 | 78.4% | 5.9% | 10.6 |
| LHR London | 1,408 | 71.9% | 9.4% | 15.4 |
| AUS Austin | 58 | 69.0% | 10.3% | 12.6 |
| NAS Nassau | 60 | 68.3% | 10.0% | 9.5 |
| EWR Newark | 57 | 64.9% | 7.0% | 12.9 |
| LAX Los Angeles | 88 | 62.5% | 10.2% | 18.9 |
| SFO San Francisco | 58 | 62.1% | 12.1% | 20.9 |
| SAN San Diego | 57 | 61.4% | 15.8% | 21.1 |
| PHL Philadelphia | 30 | 60.0% | 20.0% | 36.1 |
| MIA Miami | 37 | 59.5% | 16.2% | 30.4 |
| MCO Orlando | 57 | 57.9% | 15.8% | 23.1 |
| YYZ Toronto | 56 | 57.1% | 10.7% | 22.0 |
| JFK New York | 262 | 56.5% | 11.8% | 19.1 |
| BOS Boston | 84 | 56.0% | 17.9% | 20.9 |
| PHX Phoenix | 30 | 53.3% | 23.3% | 29.7 |
| PIT Pittsburgh (Pennsylva) | 30 | 50.0% | 30.0% | 32.7 |
| ORD Chicago | 79 | 49.4% | 15.2% | 21.1 |
| IAD Washington | 82 | 47.6% | 17.1% | 24.2 |
| SEA Seattle | 59 | 35.6% | 20.3% | 27.0 |
Least punctual routes
Routes with at least 20 British Airways departures, lowest on-time share first.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| SEA to LHR Seattle to London | 59 | 35.6% | 27.0 |
| CVG to LHR Cincinnati to London | 25 | 40.0% | 35.1 |
| YUL to LHR Montreal to London | 29 | 44.8% | 31.6 |
| IAD to LHR Washington to London | 82 | 47.6% | 24.2 |
| ORD to LHR Chicago to London | 79 | 49.4% | 21.1 |
| PIT to LHR Pittsburgh (Pennsylva) to London | 30 | 50.0% | 32.7 |
| NAS to GCM Nassau to Georgetown | 22 | 50.0% | 23.9 |
| TPA to LGW Tampa to London | 21 | 52.4% | 31.9 |
| PHX to LHR Phoenix to London | 30 | 53.3% | 29.7 |
| LHR to MEX London to Mexico City | 28 | 53.6% | 51.6 |
Busiest routes
The ten routes British Airways flew most this month.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| LHR to JFK London to New York | 264 | 79.2% | 10.6 |
| JFK to LHR New York to London | 262 | 56.5% | 19.1 |
| LHR to IAD London to Washington | 89 | 76.4% | 17.3 |
| LHR to LAX London to Los Angeles | 88 | 69.3% | 16.3 |
| LAX to LHR Los Angeles to London | 88 | 62.5% | 18.9 |
| BOS to LHR Boston to London | 84 | 56.0% | 20.9 |
| LHR to BOS London to Boston | 84 | 65.5% | 18.0 |
| IAD to LHR Washington to London | 82 | 47.6% | 24.2 |
| LHR to ORD London to Chicago | 79 | 77.2% | 11.9 |
| ORD to LHR Chicago to London | 79 | 49.4% | 21.1 |
Other months for British Airways
Airport pages for 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).