Best Time to Fly MCO to IAD: On-Time Stats by Hour & Airline
Orlando International → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
2,178 flights were scheduled from Orlando (MCO) to Washington (IAD) in the last 12 months, and 82.3% of those that flew arrived on time, 4.7 points above the US average of 77.6%.
United Airlines was the most punctual of the 2 airlines on the route at 82.7%, while Frontier Airlines trailed at 80.1%.
September has been the best month (88% on time) and Sunday the weakest day of the week (73%).
1.1% of flights were cancelled, versus 1.8% nationally.
MCO to IAD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 82.7% | 82 min | 0.9% | 1,888 |
| Frontier Airlines | 80.1% | 75 min | 2.4% | 290 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCO to IAD
On-time arrival % by scheduled departure hour (local time), 4,266 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 98.5% | 1.5% | 67 |
| 6am–7am | Limited data | 12 | |
| 7am–8am | Limited data | 16 | |
| 8am–9am | 94.7% | 0.0% | 394 |
| 9am–10am | 90.8% | 0.8% | 732 |
| 10am–11am | 80.9% | 2.9% | 136 |
| 11am–12pm | 90.3% | 1.1% | 177 |
| 12pm–1pm | 80.0% | 0.9% | 232 |
| 1pm–2pm | 81.8% | 0.7% | 418 |
| 2pm–3pm | 76.6% | 1.5% | 392 |
| 3pm–4pm | 83.7% | 2.3% | 88 |
| 4pm–5pm | 73.9% | 1.3% | 786 |
| 5pm–6pm | 73.6% | 1.9% | 54 |
| 6pm–7pm | 66.7% | 2.6% | 154 |
| 7pm–8pm | 69.4% | 0.5% | 608 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCO to IAD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 83.8% | +0.2 pts | 1.2% | 81 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.7% | -9.8 pts | 0.6% | 176 |
| Summer peak (Jun 15 - Aug 15) | 69.1% | -14.4 pts | 1.7% | 692 |
| All other days | 83.5% | — | 0.9% | 3,317 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).