Holiday travel
Labor Day at PHX
Phoenix Sky Harbor International Airport, Phoenix, AZ. July 2023 – July 2026. Set against PHX’s own ordinary days of the same weekday in the weeks around each holiday.
The window, year by year
The window runs the Saturday through the Monday, around Labor Day (the first Monday of September). In the data: Sep 2–4, 2023; Aug 31 – Sep 2, 2024; Aug 30 – Sep 1, 2025. Three windows are in the data: enough to see whether a day repeats, not enough to call it a rule.
Compared with ordinary days, Labor Day flights were better in one, about the same in one, and worse in one of the three years. The gap ran from 2.8 points below usual in 2025 to 7.6 points above usual in 2023.
0.28% of scheduled departures were cancelled across the Labor Day windows, against 0.63% on ordinary days of the same weekdays. It was lower in two of the three years.
| Year | Departures | On time | Usual | Gap, points | Cancelled | Usual |
|---|---|---|---|---|---|---|
| 2023Sep 2–4, 2023 | 1,264 | 90.4% | 82.8% | +7.6better | 0.16% | 0.62% |
| 2024Aug 31 – Sep 2, 2024 | 1,378 | 83.4% | 82.8% | +0.6about the same | 0.22% | 0.63% |
| 2025Aug 30 – Sep 1, 2025 | 1,296 | 79.9% | 82.7% | −2.8worse | 0.46% | 0.63% |
| All years3 windows | 3,938 | 84.5% | 82.8% | +1.7better | 0.28% | 0.63% |
Day by day
The Saturday before Labor Day was the worst day of the window in two of the three years. Over the years it ran 85.2% on time, about level with an ordinary Saturday.
No day was the best more than once: Monday, Sep 4 in 2023, Sunday, Sep 1 in 2024, and Saturday, Aug 30 in 2025.
- Better than usual
- Worse than usual
- About the same
- What ordinary days of the same weekday had
- Lowest to highest single year
- Lighter bars: days just outside the window
Bars show the on-time arrival rate and start at 60%, not zero. A dashed stub is a day with too few flights to print a rate.
| Day | Departures against an ordinary day | On time | Usual | Gap, points | Cancelled | Each year: 2023, 2024, 2025 |
|---|---|---|---|---|---|---|
| Thursday beforeoutside the window | about the same | 74.6% | 78.0% | −3.4worse | 1.24% | 72.5 · 66.2 · 85.4 |
| Friday beforeoutside the window | about the same | 72.5% | 79.9% | −7.4worse | 0.52% | 69.5 · 75.0 · 72.6 |
| Saturday before | 6% fewer | 85.2% | 85.7% | −0.5about the same | 0.67% | 86.1 · 83.0 · 86.7 |
| Sunday before | 22% fewer | 87.0% | 81.0% | +6.0better | 0.25% | 91.0 · 84.1 · 86.2 |
| Labor Day | about the same | 82.0% | 81.9% | +0.1about the same | 0.00% | 93.5 · 83.1 · 70.1 |
| Tuesday afteroutside the window | about the same | 90.8% | 88.2% | +2.6better | 0.08% | 93.8 · 90.6 · 87.7 |
A dash means fewer than 120 flights stood behind the figure, or behind the ordinary days it would be compared with: too few to print a rate, and nothing is estimated in its place. “Usual” is what ordinary days of the same weekday had at the same place in the weeks around the holiday, weighted by the flights being compared.
Which departure times held up
The busiest days at PHX were Saturday, Sep 2, 2023 (397 departures), Monday, Sep 4, 2023 (479 departures), Sunday, Sep 1, 2024 (422 departures), Monday, Sep 2, 2024 (542 departures), Sunday, Aug 31, 2025 (394 departures), and Monday, Sep 1, 2025 (517 departures).
Across the whole window, flights leaving 5–9 AM had the highest on-time rate: 93.2%, 2.4 points above usual for that time of day. Those leaving 6–9 PM had the lowest: 71.7%, 2.6 points below usual for that time of day.
Against usual for their time of day, flights leaving 12–3 PM did best (+4.7 points) and those leaving 6–9 PM did worst (−2.6 points).
On each year’s two busiest days, flights leaving 5–9 AM had the highest on-time rate: 93.5%, 2.6 points above usual for that time of day. Those leaving 6–9 PM had the lowest: 68.4%, 4.5 points below usual for that time of day.
Against usual for their time of day, flights leaving 12–3 PM did best (+5.3 points) and those leaving 6–9 PM did worst (−4.5 points).
| Leaving | On time, whole window | Usual | Gap, points | On time, busiest days | Usual | Gap, points |
|---|---|---|---|---|---|---|
| 5–9 AM | 93.2% | 90.8% | +2.4better | 93.5% | 90.9% | +2.6better |
| 9 AM–12 PM | 89.3% | 87.1% | +2.2about the same | 89.3% | 86.8% | +2.5about the same |
| 12–3 PM | 86.7% | 82.0% | +4.7better | 86.7% | 81.4% | +5.3better |
| 3–6 PM | 78.4% | 75.4% | +3.0about the same | 77.9% | 74.7% | +3.2about the same |
| 6–9 PM | 71.7% | 74.3% | −2.6about the same | 68.4% | 72.9% | −4.5about the same |
| 9 PM–5 AM | 82.7% | 82.3% | +0.4about the same | 79.8% | 82.1% | −2.3about the same |
PHX beside every covered airport
Storms and outages move whole regions at once. This puts PHX’s year beside the year of all covered airports together, each against its own usual, to show whether PHX did better or worse than the network.
| Year | PHX on time | PHX, gap from usual | All airports on time | All airports, gap from usual |
|---|---|---|---|---|
| 2023Sep 2–4, 2023 | 90.4% | +7.6 | 87.4% | +7.6 |
| 2024Aug 31 – Sep 2, 2024 | 83.4% | +0.6 | 82.1% | +2.4 |
| 2025Aug 30 – Sep 1, 2025 | 79.9% | −2.8 | 82.2% | +2.5 |
For every holiday at once, see the five holidays at PHX, or the network view.