Holiday travel
Labor Day at MDW
Chicago Midway International Airport, Chicago, IL. July 2023 – July 2026. Set against MDW’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.
Labor Day flights ran better than ordinary days in all three years. The gap ran from 8.9 points above usual in 2025 to 9.6 points above usual in 2024.
0.21% of scheduled departures were cancelled across the Labor Day windows, against 0.95% 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 | 684 | 87.3% | 78.1% | +9.2better | 0.58% | 0.93% |
| 2024Aug 31 – Sep 2, 2024 | 615 | 87.7% | 78.1% | +9.6better | 0.00% | 0.96% |
| 2025Aug 30 – Sep 1, 2025 | 580 | 87.0% | 78.1% | +8.9better | 0.00% | 0.96% |
| All years3 windows | 1,879 | 87.4% | 78.1% | +9.3better | 0.21% | 0.95% |
Day by day
Labor Day was the worst day of the window in two of the three years. Over the years it ran 85.8% on time, still 10.0 points above an ordinary Monday.
The Sunday before Labor Day was the best day of the window in two of the three years. Over the years it ran 89.1% on time, 11.2 points above an ordinary Sunday.
- 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 50%, 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 | 78.8% | 75.9% | +2.9about the same | 0.41% | 86.2 · 67.8 · 82.2 |
| Friday beforeoutside the window | about the same | 74.4% | 76.0% | −1.6about the same | 0.67% | 80.2 · 61.0 · 82.3 |
| Saturday before | about the same | 87.5% | 81.7% | +5.8better | 0.38% | 86.7 · 87.3 · 88.6 |
| Sunday before | 18% fewer | 89.1% | 77.9% | +11.2better | 0.16% | 90.4 · 91.1 · 85.4 |
| Labor Day | about the same | 85.8% | 75.8% | +10.0better | 0.13% | 85.0 · 85.4 · 87.2 |
| Tuesday afteroutside the window | 2% fewer | 92.9% | 81.2% | +11.7better | 0.15% | 90.1 · 96.7 · 92.1 |
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 MDW were Sunday, Sep 3, 2023 (231 departures), Monday, Sep 4, 2023 (263 departures), Sunday, Sep 1, 2024 (194 departures), Monday, Sep 2, 2024 (248 departures), Sunday, Aug 31, 2025 (187 departures), and Monday, Sep 1, 2025 (235 departures).
Across the whole window, flights leaving 5–9 AM had the highest on-time rate: 92.1%, 2.0 points above usual for that time of day. Those leaving 3–6 PM had the lowest: 82.6%, still 9.9 points above usual for that time of day.
The holiday helped flights leaving 6–9 PM the most (17.2 points above usual for that time of day) and those leaving 5–9 AM the least (2.0 points above).
On each year’s two busiest days, flights leaving 5–9 AM had the highest on-time rate: 93.6%, 3.2 points above usual for that time of day. Those leaving 3–6 PM had the lowest: 82.3%, still 12.6 points above usual for that time of day.
The holiday helped flights leaving 6–9 PM the most (18.5 points above usual for that time of day) and those leaving 5–9 AM the least (3.2 points above).
| Leaving | On time, whole window | Usual | Gap, points | On time, busiest days | Usual | Gap, points |
|---|---|---|---|---|---|---|
| 5–9 AM | 92.1% | 90.1% | +2.0about the same | 93.6% | 90.4% | +3.2about the same |
| 9 AM–12 PM | 90.2% | 85.0% | +5.2better | 89.9% | 84.6% | +5.3better |
| 12–3 PM | 89.3% | 79.3% | +10.0better | 88.9% | 77.9% | +11.0better |
| 3–6 PM | 82.6% | 72.7% | +9.9better | 82.3% | 69.7% | +12.6better |
| 6–9 PM | 84.4% | 67.2% | +17.2better | 85.2% | 66.7% | +18.5better |
| 9 PM–5 AM | — | — | — | — | — | — |
MDW beside every covered airport
Storms and outages move whole regions at once. This puts MDW’s year beside the year of all covered airports together, each against its own usual, to show whether MDW did better or worse than the network.
| Year | MDW on time | MDW, gap from usual | All airports on time | All airports, gap from usual |
|---|---|---|---|---|
| 2023Sep 2–4, 2023 | 87.3% | +9.2 | 87.4% | +7.6 |
| 2024Aug 31 – Sep 2, 2024 | 87.7% | +9.6 | 82.1% | +2.4 |
| 2025Aug 30 – Sep 1, 2025 | 87.0% | +8.9 | 82.2% | +2.5 |
For every holiday at once, see the five holidays at MDW, or the network view.