Holiday travel
Holiday travel at IAD
Washington Dulles International Airport, Washington, VA. July 2023 – July 2026. Set against IAD’s own ordinary days of the same weekday in the weeks around each holiday.
The five holidays at IAD
At IAD, Memorial Day ran furthest below ordinary days (−2.2 points) and Labor Day furthest above (+4.3 points).
Each row pools every year of that holiday’s window at IAD and sets it against IAD’s own ordinary days of the same weekdays in the weeks around it. Open a holiday for its day-by-day figures.
| Holiday | On time | Gap from usual, points | Cancelled | Worst day | Best day | All airports, gap |
|---|---|---|---|---|---|---|
| Thanksgiving3 times in the data | 83.6%usual 83.2% | +0.4about the sameyears: 1 better, 1 about the same, 1 worse | 0.29%usual 0.58% | Sunday after (three of three) | Wednesday before (two of three) | −2.1worse |
| Christmas to New Year’s3 times in the data | 80.9%usual 79.8% | +1.1about the sameyears: 1 better, 2 about the same | 0.56%usual 2.16% | Moved each year | Moved each year | −3.2worse |
| July 44 times in the data | 76.2%usual 72.2% | +4.0betteryears: 3 better, 1 worse | 2.19%usual 2.01% | July 1 (three of four) | July 4 (two of four) | +5.2better |
| Memorial Day3 times in the data | 77.2%usual 79.4% | −2.2about the sameyears: 1 better, 1 about the same, 1 worse | 0.55%usual 0.59% | Saturday before (three of three) | Memorial Day (three of three) | −0.3about the same |
| Labor Day3 times in the data | 86.9%usual 82.6% | +4.3betteryears: 2 better, 1 about the same | 0.38%usual 1.23% | Labor Day (two of three) | Saturday before (two of three) | +4.2better |
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.