Alaska Airlines (ASA) on-time performance, September 2026
30,910 scheduled Alaska Airlines departures in US airspace in September 2026, 79.1% of them on time. Measured from FAA departure data, updated every morning.
On time, day by day
Share of Alaska Airlines departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Friday 25 September at 68.4%. Best: Sunday 6 September at 89.8%.
Airports, ranked by on-time share
Airports with at least 30 Alaska Airlines departures in the month.
| Airport | Departures | On time | 45+ min late | Avg delay (min) |
|---|---|---|---|---|
| FAT Fresno | 32 | 96.9% | 0.0% | -4.9 |
| MKE Milwaukee | 37 | 94.6% | 2.7% | -1.0 |
| MCI Kansas City | 91 | 94.5% | 3.3% | 0.2 |
| OMA Omaha | 34 | 94.1% | 0.0% | -1.3 |
| OTZ Kotzebue | 31 | 93.5% | 0.0% | -3.6 |
| YYZ Toronto | 30 | 93.3% | 3.3% | 3.8 |
| PSP Palm Springs | 62 | 90.3% | 8.1% | 8.7 |
| PAE Everett | 70 | 90.0% | 2.9% | 1.4 |
| BNA Nashville | 107 | 88.8% | 2.8% | -1.3 |
| ADQ Kodiak | 87 | 88.5% | 3.4% | 2.6 |
| SNA Santa Ana | 393 | 88.3% | 3.8% | -1.9 |
| MSP Minneapolis | 119 | 88.2% | 0.8% | 0.3 |
| BWI Baltimore | 90 | 87.8% | 4.4% | 1.0 |
| ANC Anchorage | 1,462 | 87.6% | 4.8% | 2.7 |
| IND Indianapolis | 61 | 86.9% | 3.3% | 6.3 |
| BZN Bozeman | 90 | 86.7% | 2.2% | -1.1 |
| CHS Charleston | 30 | 86.7% | 0.0% | 3.7 |
| AKN King Salmon | 37 | 86.5% | 10.8% | 8.1 |
| BUR Burbank | 261 | 86.2% | 2.7% | 0.6 |
| FAI Fairbanks | 260 | 86.2% | 5.4% | 5.9 |
| OAK Oakland | 178 | 86.0% | 7.3% | 5.3 |
| STL St. Louis | 106 | 85.8% | 3.8% | 1.2 |
| ONT Ontario | 266 | 85.7% | 6.0% | 3.2 |
| DTW Detroit | 61 | 85.2% | 8.2% | 13.0 |
| SBD San Bernardino | 53 | 84.9% | 1.9% | -2.1 |
| GEG Spokane | 204 | 84.8% | 5.4% | 5.8 |
| AUS Austin | 150 | 84.7% | 5.3% | 0.9 |
| PHX Phoenix | 468 | 84.0% | 6.4% | 5.4 |
| LIH Lihue | 747 | 83.9% | 5.2% | 6.6 |
| IAH Houston | 118 | 83.9% | 4.2% | 2.0 |
| ABQ Albuquerque | 61 | 83.6% | 1.6% | 0.6 |
| SMF Sacramento | 423 | 83.5% | 6.6% | 6.0 |
| ATL Atlanta | 120 | 83.3% | 9.2% | 11.0 |
| JNU Juneau | 462 | 83.1% | 7.1% | 7.5 |
| KOA Kona | 774 | 82.8% | 5.2% | 6.7 |
| SIT Sitka | 157 | 82.2% | 8.9% | 5.8 |
| OGG Kahului | 1,230 | 82.1% | 5.3% | 7.2 |
| PIT Pittsburgh (Pennsylva) | 61 | 82.0% | 11.5% | 14.6 |
| IAD Washington | 121 | 81.8% | 4.1% | 3.4 |
| CDV Cordova | 66 | 81.8% | 9.1% | 13.6 |
| DCA Washington | 178 | 81.5% | 9.6% | 5.4 |
| SLC Salt Lake City | 125 | 80.8% | 2.4% | 3.9 |
| LGB Long Beach | 106 | 80.2% | 7.5% | 9.2 |
| SCC Deadhorse | 86 | 80.2% | 8.1% | 10.0 |
| OKC Oklahoma City | 45 | 80.0% | 4.4% | 2.0 |
| TUS Tucson | 30 | 80.0% | 3.3% | 4.3 |
| SJC San Jose | 310 | 79.7% | 6.1% | 3.5 |
| CVG Cincinnati | 187 | 79.7% | 7.0% | 7.7 |
| DEN Denver | 293 | 79.5% | 7.2% | 4.9 |
| ITO Hilo | 368 | 79.3% | 3.8% | 7.3 |
| LAS Las Vegas | 586 | 78.8% | 9.6% | 9.5 |
| BOI Boise | 256 | 78.5% | 7.4% | 8.2 |
| HNL Honolulu | 2,872 | 78.3% | 6.2% | 9.9 |
| CLE Cleveland | 60 | 78.3% | 10.0% | 13.3 |
| BRW Barrow | 50 | 78.0% | 4.0% | 3.9 |
| PHL Philadelphia | 90 | 77.8% | 11.1% | 9.6 |
| SEA Seattle | 7,065 | 77.4% | 7.3% | 7.4 |
| EWR Newark | 195 | 77.4% | 9.7% | 10.5 |
| KTN Ketchikan | 245 | 77.1% | 10.6% | 10.0 |
| PDX Portland | 2,660 | 76.7% | 6.9% | 10.7 |
| LAX Los Angeles | 1,086 | 76.7% | 8.1% | 9.7 |
| STS Santa Rosa | 90 | 76.7% | 6.7% | 9.5 |
| MSY New Orleans | 30 | 76.7% | 0.0% | 6.7 |
| SAN San Diego | 1,288 | 76.6% | 9.9% | 7.8 |
| DFW Dallas-Fort Worth | 263 | 74.1% | 8.4% | 13.4 |
| FLL Fort Lauderdale | 30 | 73.3% | 16.7% | 18.3 |
| JFK New York | 369 | 73.2% | 7.9% | 7.1 |
| ORD Chicago | 261 | 73.2% | 16.1% | 18.7 |
| OME Nome | 37 | 73.0% | 10.8% | 6.4 |
| SFO San Francisco | 1,071 | 72.2% | 11.7% | 9.3 |
| RDM Redmond | 32 | 71.9% | 3.1% | 7.1 |
| MCO Orlando | 140 | 71.4% | 10.0% | 11.8 |
| DLG Dillingham | 35 | 71.4% | 11.4% | 10.3 |
| RNO Reno | 90 | 71.1% | 13.3% | 12.7 |
| RDU Raleigh-Durham | 76 | 71.1% | 6.6% | 10.6 |
| CMH Columbus | 61 | 70.5% | 11.5% | 14.2 |
| YAK Yakutat | 70 | 70.0% | 10.0% | 11.8 |
| MSO Missoula | 60 | 70.0% | 10.0% | 13.1 |
| SAT San Antonio | 39 | 66.7% | 12.8% | 19.7 |
| BET Bethel | 82 | 63.4% | 8.5% | 13.2 |
| AFW Fort Worth | 61 | 60.7% | 9.8% | 17.1 |
| BOS Boston | 224 | 58.5% | 25.0% | 31.1 |
| MIA Miami | 30 | 56.7% | 23.3% | 23.6 |
| TPA Tampa | 77 | 53.2% | 20.8% | 21.8 |
Least punctual routes
Routes with at least 20 Alaska Airlines departures, lowest on-time share first.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| OGG to OAK Kahului to Oakland | 28 | 32.1% | 32.6 |
| TPA to SAN Tampa to San Diego | 30 | 40.0% | 31.9 |
| HNL to LGB Honolulu to Long Beach | 30 | 43.3% | 26.5 |
| HNL to SJC Honolulu to San Jose | 30 | 43.3% | 34.2 |
| HNL to OAK Honolulu to Oakland | 29 | 44.8% | 23.6 |
| SEA to BOS Seattle to Boston | 122 | 48.4% | 43.5 |
| SEA to SAT Seattle to San Antonio | 37 | 48.6% | 20.1 |
| LAX to SFO Los Angeles to San Francisco | 182 | 49.5% | 24.9 |
| PDX to MSP Portland to Minneapolis | 30 | 50.0% | 16.2 |
| AFW to SMF Fort Worth to Sacramento | 30 | 50.0% | 18.6 |
Busiest routes
The ten routes Alaska Airlines flew most this month.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| OGG to HNL Kahului to Honolulu | 591 | 85.1% | 4.0 |
| HNL to OGG Honolulu to Kahului | 588 | 84.7% | 5.5 |
| SEA to ANC Seattle to Anchorage | 484 | 78.1% | 6.0 |
| HNL to KOA Honolulu to Kona | 464 | 85.6% | 3.7 |
| HNL to LIH Honolulu to Lihue | 464 | 88.1% | 2.7 |
| KOA to HNL Kona to Honolulu | 464 | 83.4% | 6.9 |
| ANC to SEA Anchorage to Seattle | 456 | 87.3% | 3.4 |
| LIH to HNL Lihue to Honolulu | 451 | 84.0% | 5.4 |
| HNL to ITO Honolulu to Hilo | 343 | 84.8% | 4.7 |
| ITO to HNL Hilo to Honolulu | 341 | 78.3% | 7.8 |
Other months for Alaska 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).