Best Time to Fly IND to IAD: On-Time Stats by Hour & Airline
Indianapolis International → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
993 flights were scheduled from Indianapolis (IND) to Washington (IAD) in the last 12 months, and 85.9% of those that flew arrived on time, 8.3 points above the US average of 77.6%.
Among 2 airlines, United Airlines led with 89.8% on time and Republic Airways was last with 85.7%.
Over 24 months, Saturday was the most reliable day (90% on time) and December the worst month (78%).
The cancellation rate was 1.3% (US average 1.8%).
IND 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 | 89.8% | 30 min | 0.0% | 49 |
| Republic Airways | 85.7% | 67 min | 1.4% | 944 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IND to IAD
On-time arrival % by scheduled departure hour (local time), 2,274 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.4% | 1.4% | 219 |
| 9am–10am | 90.9% | 1.6% | 123 |
| 10am–11am | 93.8% | 0.6% | 534 |
| 12pm–1pm | 90.5% | 0.0% | 84 |
| 2pm–3pm | 81.2% | 1.1% | 715 |
| 3pm–4pm | Limited data | 5 | |
| 7pm–8pm | 84.4% | 2.7% | 594 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IND 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) | 88.9% | -0.2 pts | 0.0% | 45 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.1% | -8.0 pts | 0.0% | 90 |
| Summer peak (Jun 15 - Aug 15) | 80.0% | -9.1 pts | 4.1% | 392 |
| All other days | 89.1% | — | 0.9% | 1,747 |
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).