United Airlines (UAL) on-time performance, September 2026
84,982 scheduled United Airlines departures in US airspace in September 2026, 73.7% of them on time. Measured from FAA departure data, updated every morning.
On time, day by day
Share of United Airlines departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Thursday 3 September at 58.6%. Best: Tuesday 29 September at 83.5%.
Airports, ranked by on-time share
Airports with at least 30 United Airlines departures in the month.
| Airport | Departures | On time | 45+ min late | Avg delay (min) |
|---|---|---|---|---|
| MRY Monterey | 60 | 95.0% | 3.3% | -2.8 |
| KOA Kona | 129 | 93.8% | 4.7% | 1.5 |
| GUM Agana | 275 | 93.1% | 1.5% | -0.2 |
| YEG Edmonton | 84 | 92.9% | 2.4% | 2.9 |
| NAS Nassau | 42 | 92.9% | 2.4% | -3.4 |
| SPN Saipan | 39 | 92.3% | 2.6% | 5.9 |
| TUS Tucson | 102 | 92.2% | 3.9% | 3.5 |
| OGG Kahului | 168 | 90.5% | 4.8% | 7.8 |
| MAF Midland | 31 | 90.3% | 3.2% | 13.8 |
| SJC San Jose | 138 | 89.1% | 6.5% | 3.4 |
| LIH Lihue | 100 | 89.0% | 9.0% | 10.6 |
| SMF Sacramento | 399 | 88.7% | 6.0% | 5.7 |
| GTF Great Falls | 62 | 88.7% | 3.2% | 6.2 |
| GVA Geneva | 44 | 88.6% | 4.5% | 7.9 |
| YOW Ottawa | 31 | 87.1% | 12.9% | 17.3 |
| OPO Porto | 54 | 87.0% | 7.4% | 2.4 |
| ATW Appleton | 30 | 86.7% | 0.0% | 4.4 |
| AVL Asheville | 30 | 86.7% | 10.0% | 6.6 |
| BFL Bakersfield | 30 | 86.7% | 10.0% | 7.5 |
| PSC Pasco | 30 | 86.7% | 10.0% | 16.8 |
| MUC Munich | 178 | 86.0% | 6.2% | 6.4 |
| LHR London | 566 | 85.9% | 6.5% | 6.1 |
| SAT San Antonio | 472 | 85.4% | 10.0% | 10.9 |
| TLV Tel-Aviv | 41 | 85.4% | 7.3% | 5.3 |
| GEG Spokane | 61 | 85.2% | 3.3% | 3.8 |
| SDF Louisville | 61 | 85.2% | 6.6% | 5.0 |
| KEF Keflavik | 73 | 84.9% | 9.6% | 8.3 |
| MAD Madrid | 59 | 84.7% | 11.9% | 12.7 |
| ZRH Zurich | 119 | 84.0% | 5.9% | 3.0 |
| PNS Pensacola | 81 | 84.0% | 8.6% | 12.6 |
| DAY Dayton | 31 | 83.9% | 3.2% | 6.5 |
| FAT Fresno | 91 | 83.5% | 9.9% | 15.8 |
| CHS Charleston | 317 | 83.3% | 10.4% | 17.1 |
| GSP Greer | 42 | 83.3% | 4.8% | 14.6 |
| LIT Little Rock | 30 | 83.3% | 13.3% | 22.4 |
| CLT Charlotte | 140 | 82.9% | 10.7% | 11.9 |
| ELP El Paso | 62 | 82.3% | 4.8% | 15.4 |
| BRU Brussels | 90 | 82.2% | 6.7% | 6.1 |
| YYZ Toronto | 305 | 82.0% | 10.5% | 14.6 |
| PSP Palm Springs | 88 | 81.8% | 8.0% | 12.0 |
| SRQ Sarasota/Bradenton | 88 | 81.8% | 9.1% | 16.3 |
| SJU San Juan | 213 | 81.7% | 9.4% | 15.0 |
| RSW Fort Myers | 305 | 81.6% | 9.2% | 14.8 |
| YYC Calgary | 217 | 81.6% | 10.1% | 11.6 |
| AUS Austin | 899 | 81.4% | 8.9% | 7.6 |
| MSY New Orleans | 458 | 81.4% | 10.7% | 12.5 |
| MCO Orlando | 1,079 | 81.3% | 9.6% | 11.1 |
| BWI Baltimore | 345 | 80.9% | 12.8% | 15.8 |
| MSO Missoula | 68 | 80.9% | 11.8% | 12.5 |
| SNN Shannon | 52 | 80.8% | 5.8% | 18.6 |
| HNL Honolulu | 357 | 80.7% | 5.9% | 11.0 |
| TPA Tampa | 598 | 80.6% | 12.0% | 15.7 |
| BIL Billings | 62 | 80.6% | 3.2% | 7.5 |
| CLE Cleveland | 847 | 80.4% | 12.2% | 14.8 |
| RDU Raleigh-Durham | 528 | 80.1% | 10.6% | 17.6 |
| SXF Berlin | 30 | 80.0% | 16.7% | 24.3 |
| BHM Birmingham | 30 | 80.0% | 10.0% | 12.2 |
| LEX Lexington | 30 | 80.0% | 0.0% | 5.7 |
| SNA Santa Ana | 565 | 79.8% | 8.0% | 8.3 |
| PWM Portland | 104 | 79.8% | 11.5% | 18.1 |
| MSP Minneapolis | 565 | 79.6% | 12.4% | 16.6 |
| FRA Frankfurt | 269 | 78.8% | 8.9% | 6.9 |
| CDG Paris | 178 | 78.7% | 11.2% | 11.0 |
| BZN Bozeman | 278 | 78.4% | 9.7% | 9.8 |
| PDX Portland | 607 | 78.3% | 11.0% | 9.8 |
| TYS Knoxville | 120 | 78.3% | 13.3% | 18.4 |
| FLL Fort Lauderdale | 608 | 78.0% | 12.7% | 16.0 |
| BNA Nashville | 689 | 77.8% | 12.9% | 13.5 |
| ORF Norfolk | 165 | 77.6% | 12.1% | 17.9 |
| AMS Amsterdam | 147 | 77.6% | 12.9% | 16.6 |
| TUL Tulsa | 67 | 77.6% | 7.5% | 10.6 |
| LAS Las Vegas | 1,268 | 77.5% | 12.6% | 12.9 |
| PIT Pittsburgh (Pennsylva) | 352 | 77.3% | 12.5% | 20.5 |
| DEN Denver | 9,984 | 77.1% | 10.5% | 12.5 |
| IAH Houston | 7,330 | 77.0% | 9.7% | 13.2 |
| BOI Boise | 182 | 76.9% | 13.7% | 16.7 |
| BTV Burlington | 103 | 76.7% | 10.7% | 19.9 |
| IDA Idaho Falls | 30 | 76.7% | 3.3% | 6.3 |
| SLC Salt Lake City | 358 | 76.5% | 12.3% | 16.0 |
| PHL Philadelphia | 426 | 76.3% | 15.7% | 17.6 |
| JAX Jacksonville | 274 | 76.3% | 16.8% | 18.5 |
| RIC Richmond | 88 | 76.1% | 12.5% | 48.5 |
| ATL Atlanta | 670 | 75.7% | 12.8% | 17.7 |
| MYR Myrtle Beach | 37 | 75.7% | 16.2% | 18.3 |
| BUF Buffalo | 118 | 75.4% | 14.4% | 22.1 |
| YUL Montreal | 61 | 75.4% | 14.8% | 15.6 |
| SEA Seattle | 806 | 75.3% | 11.9% | 12.7 |
| ANC Anchorage | 166 | 75.3% | 9.0% | 10.9 |
| SAV Savannah | 181 | 75.1% | 13.3% | 23.5 |
| NAP Naples | 56 | 75.0% | 7.1% | 12.7 |
| LAX Los Angeles | 2,980 | 74.9% | 10.3% | 13.4 |
| DCA Washington | 630 | 74.8% | 15.4% | 14.6 |
| MCI Kansas City | 445 | 74.8% | 12.1% | 21.3 |
| ALB Albany | 151 | 74.8% | 19.9% | 33.5 |
| DFW Dallas-Fort Worth | 849 | 74.7% | 13.9% | 18.0 |
| PHX Phoenix | 762 | 74.7% | 11.2% | 14.3 |
| CVG Cincinnati | 292 | 74.7% | 15.4% | 21.8 |
| BDL Windsor Locks | 284 | 74.6% | 14.1% | 22.6 |
| ABQ Albuquerque | 204 | 74.5% | 13.7% | 21.4 |
| FCA Kalispell | 140 | 74.3% | 11.4% | 14.5 |
| RDM Redmond | 150 | 74.0% | 13.3% | 17.0 |
| OMA Omaha | 268 | 73.9% | 14.9% | 23.6 |
| YVR Vancouver | 485 | 73.6% | 8.9% | 12.6 |
| SAN San Diego | 974 | 73.4% | 11.2% | 12.0 |
| GLA Glasgow | 30 | 73.3% | 3.3% | 6.8 |
| IND Indianapolis | 261 | 73.2% | 13.0% | 24.0 |
| ONT Ontario | 203 | 72.9% | 10.8% | 18.4 |
| MSN Madison | 195 | 72.8% | 17.4% | 25.2 |
| EDI Edinburgh | 92 | 72.8% | 10.9% | 15.5 |
| DTW Detroit | 255 | 72.5% | 18.8% | 24.8 |
| EGE Eagle | 98 | 72.4% | 10.2% | 14.9 |
| VCE Venice | 54 | 72.2% | 11.1% | 16.7 |
| EUG Eugene | 129 | 72.1% | 14.7% | 17.2 |
| SYR Syracuse | 119 | 71.4% | 14.3% | 24.4 |
| ATH Athens | 91 | 71.4% | 11.0% | 17.3 |
| MIA Miami | 376 | 71.3% | 19.1% | 34.2 |
| FCO Rome | 210 | 71.0% | 13.8% | 21.1 |
| MXP Milano | 62 | 71.0% | 19.4% | 25.1 |
| IAD Washington | 3,967 | 70.9% | 13.6% | 17.8 |
| SFO San Francisco | 6,694 | 70.8% | 11.1% | 12.9 |
| MKE Milwaukee | 34 | 70.6% | 11.8% | 14.5 |
| DRO Durango | 61 | 70.5% | 8.2% | 24.6 |
| DSM Des Moines | 240 | 70.4% | 17.1% | 27.2 |
| FSD Sioux Falls | 60 | 70.0% | 10.0% | 20.6 |
| MDT Harrisburg | 60 | 70.0% | 18.3% | 30.2 |
| ROC Rochester | 60 | 70.0% | 23.3% | 27.5 |
| EWR Newark | 7,625 | 69.7% | 14.6% | 20.7 |
| STL St. Louis | 288 | 69.4% | 14.6% | 26.1 |
| TVC Traverse City | 108 | 69.4% | 18.5% | 18.4 |
| JAC Jackson | 256 | 69.1% | 16.4% | 19.2 |
| BCN Barcelona | 112 | 68.8% | 17.0% | 17.6 |
| LGA New York | 813 | 68.3% | 18.0% | 19.1 |
| GRR Grand Rapids | 171 | 67.8% | 19.9% | 34.2 |
| OKC Oklahoma City | 151 | 67.5% | 17.9% | 26.6 |
| DUB Dublin | 144 | 67.4% | 16.7% | 21.7 |
| ORD Chicago | 11,128 | 66.7% | 19.3% | 22.7 |
| MFR Medford | 109 | 66.1% | 14.7% | 23.7 |
| CMH Columbus | 417 | 65.9% | 17.0% | 26.7 |
| BOS Boston | 1,194 | 65.3% | 21.1% | 26.6 |
| RNO Reno | 300 | 65.3% | 14.0% | 19.8 |
| MTJ Montrose | 92 | 62.0% | 10.9% | 26.3 |
| GJT Grand Junction | 69 | 60.9% | 18.8% | 47.1 |
| FAI Fairbanks | 35 | 60.0% | 22.9% | 46.7 |
| SBA Santa Barbara | 169 | 59.8% | 15.4% | 19.6 |
| HDN Hayden | 60 | 58.3% | 13.3% | 16.9 |
| MEM Memphis | 117 | 58.1% | 14.5% | 29.5 |
| FAR Fargo | 31 | 58.1% | 6.5% | 18.8 |
| BUR Burbank | 232 | 57.8% | 22.8% | 25.9 |
| LIS Lisbon | 59 | 57.6% | 25.4% | 34.4 |
| NCE Nice | 43 | 55.8% | 14.0% | 21.6 |
| CID Cedar Rapids | 121 | 54.5% | 19.0% | 29.1 |
| SBP San Luis Obispo | 121 | 54.5% | 21.5% | 28.5 |
| RAP Rapid City | 100 | 52.0% | 20.0% | 51.2 |
| XNA Fayetteville/Springdale/Rogers | 31 | 51.6% | 12.9% | 25.5 |
| ICT Wichita | 62 | 50.0% | 14.5% | 36.9 |
| ACV Arcata/Eureka | 53 | 41.5% | 17.0% | 37.3 |
| COS Colorado Springs | 63 | 41.3% | 49.2% | 138.8 |
| NRT Tokyo | 52 | 9.6% | 88.5% | 433.0 |
Least punctual routes
Routes with at least 20 United Airlines departures, lowest on-time share first.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| NRT to EWR Tokyo to Newark | 21 | 0.0% | 589.1 |
| SFO to SIN San Francisco to Singapore | 35 | 5.7% | 43.5 |
| NRT to IAH Tokyo to Houston | 29 | 10.3% | 355.1 |
| COS to DEN Colorado Springs to Denver | 33 | 18.2% | 249.1 |
| IAD to AMS Washington to Amsterdam | 29 | 20.7% | 37.1 |
| ACV to SFO Arcata/Eureka to San Francisco | 32 | 21.9% | 48.8 |
| IAD to BRU Washington to Brussels | 29 | 24.1% | 34.3 |
| ICT to DEN Wichita to Denver | 32 | 28.1% | 45.9 |
| SBP to SFO San Luis Obispo to San Francisco | 60 | 28.3% | 44.6 |
| IAD to MUC Washington to Munich | 30 | 30.0% | 55.7 |
Busiest routes
The ten routes United Airlines flew most this month.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| ORD to LGA Chicago to New York | 418 | 58.1% | 28.9 |
| LGA to ORD New York to Chicago | 417 | 61.4% | 29.4 |
| ORD to DEN Chicago to Denver | 409 | 72.6% | 14.6 |
| DEN to ORD Denver to Chicago | 408 | 76.7% | 17.0 |
| ORD to EWR Chicago to Newark | 393 | 69.2% | 25.4 |
| EWR to ORD Newark to Chicago | 381 | 69.3% | 28.6 |
| ORD to SFO Chicago to San Francisco | 375 | 66.7% | 20.9 |
| SFO to ORD San Francisco to Chicago | 373 | 75.9% | 9.5 |
| IAH to ORD Houston to Chicago | 365 | 77.3% | 15.9 |
| ORD to IAH Chicago to Houston | 364 | 73.4% | 12.6 |
Other months for United Airlines
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).