WestJet (WJA) on-time performance, September 2026
11,930 scheduled WestJet departures in US airspace in September 2026, 84.8% of them on time. Measured from FAA departure data, updated every morning.
On time, day by day
Share of WestJet departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Monday 28 September at 78.0%. Best: Tuesday 15 September at 90.8%.
Airports, ranked by on-time share
Airports with at least 30 WestJet departures in the month.
| Airport | Departures | On time | 45+ min late | Avg delay (min) |
|---|---|---|---|---|
| PHX Phoenix | 82 | 93.9% | 1.2% | -3.7 |
| YFI Suncor Energy Site | 96 | 91.7% | 3.1% | 4.2 |
| YOW Ottawa | 226 | 91.2% | 2.2% | 0.6 |
| YQR Regina | 144 | 91.0% | 0.7% | 1.0 |
| YVR Vancouver | 1,252 | 90.2% | 2.6% | 0.4 |
| YLW Kelowna | 320 | 89.1% | 2.2% | -1.4 |
| YYJ Victoria | 292 | 89.0% | 1.4% | -0.4 |
| YYZ Toronto | 1,442 | 88.6% | 4.6% | 1.4 |
| YEG Edmonton | 1,065 | 88.5% | 2.5% | 3.0 |
| YQB Quebec | 32 | 87.5% | 6.2% | 1.2 |
| YUL Montreal | 218 | 87.2% | 4.1% | 3.1 |
| LAS Las Vegas | 151 | 86.1% | 4.0% | 3.0 |
| YQQ Comox | 92 | 85.9% | 3.3% | 1.6 |
| MSP Minneapolis | 61 | 85.2% | 3.3% | 4.5 |
| YXE Saskatoon | 204 | 84.8% | 3.9% | 4.2 |
| YYC Calgary | 3,782 | 84.0% | 3.1% | 5.5 |
| YWG Winnipeg | 637 | 83.7% | 5.2% | 7.0 |
| YXU London | 55 | 83.6% | 5.5% | 17.1 |
| YKF Waterloo | 30 | 83.3% | 6.7% | 5.4 |
| SAN San Diego | 30 | 83.3% | 6.7% | -1.3 |
| YYT St. John'S | 95 | 82.1% | 8.4% | 12.6 |
| BNA Nashville | 47 | 80.9% | 6.4% | 2.4 |
| YHM Hamilton | 36 | 80.6% | 13.9% | 19.8 |
| ATL Atlanta | 96 | 78.1% | 3.1% | 9.1 |
| YXX Abbotsford | 76 | 77.6% | 5.3% | 9.4 |
| YZF Yellowknife | 30 | 76.7% | 0.0% | 6.1 |
| DTW Detroit | 70 | 74.3% | 8.6% | 14.9 |
| YHZ Halifax | 487 | 73.9% | 8.2% | 12.4 |
| LAX Los Angeles | 145 | 73.8% | 4.1% | 6.9 |
| IAH Houston | 43 | 72.1% | 0.0% | 6.5 |
| MCO Orlando | 48 | 66.7% | 12.5% | 14.8 |
| BOS Boston | 33 | 63.6% | 9.1% | 16.5 |
| SEA Seattle | 57 | 63.2% | 7.0% | 12.6 |
| SFO San Francisco | 71 | 60.6% | 25.4% | 18.2 |
Least punctual routes
Routes with at least 20 WestJet departures, lowest on-time share first.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| HNL to YVR Honolulu to Vancouver | 20 | 20.0% | 29.1 |
| YYC to SFO Calgary to San Francisco | 71 | 45.1% | 37.9 |
| JFK to YYC New York to Calgary | 27 | 55.6% | 20.2 |
| YYC to JFK Calgary to New York | 26 | 57.7% | 16.3 |
| SFO to YYC San Francisco to Calgary | 71 | 60.6% | 18.2 |
| YYC to MEX Calgary to Mexico City | 21 | 61.9% | 28.8 |
| SEA to YYC Seattle to Calgary | 57 | 63.2% | 12.6 |
| YYC to SAN Calgary to San Diego | 30 | 63.3% | 19.0 |
| BOS to YYC Boston to Calgary | 33 | 63.6% | 16.5 |
| YYC to ORD Calgary to Chicago | 22 | 63.6% | 17.7 |
Busiest routes
The ten routes WestJet flew most this month.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| YVR to YYC Vancouver to Calgary | 538 | 87.5% | 1.1 |
| YYC to YVR Calgary to Vancouver | 519 | 78.6% | 9.1 |
| YYZ to YYC Toronto to Calgary | 363 | 91.5% | -1.4 |
| YYC to YYZ Calgary to Toronto | 359 | 78.3% | 9.9 |
| YVR to YEG Vancouver to Edmonton | 239 | 95.8% | -5.2 |
| YWG to YYC Winnipeg to Calgary | 239 | 80.8% | 7.5 |
| YEG to YVR Edmonton to Vancouver | 234 | 81.2% | 7.5 |
| YLW to YYC Kelowna to Calgary | 229 | 87.3% | -0.2 |
| YYC to YWG Calgary to Winnipeg | 228 | 87.3% | 2.0 |
| YYC to YEG Calgary to Edmonton | 222 | 93.7% | -0.1 |
Other months for WestJet
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).