Best Time to Fly MSP to IAD: On-Time Stats by Hour & Airline
Minneapolis-St Paul International → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
982 flights were scheduled from Minneapolis (MSP) to Washington (IAD) in the last 12 months, and 81.7% of those that flew arrived on time, 4.1 points above the US average of 77.6%.
Republic Airways was the most punctual of the 3 airlines on the route at 91.4%, while SkyWest Airlines trailed at 80.3%.
October has been the best month (93% on time) and Thursday the weakest day of the week (80%).
1.6% of flights were cancelled, versus 1.8% nationally.
MSP 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 |
|---|---|---|---|---|
| Republic Airways | 91.4% | 245 min | 7.9% | 89 |
| United Airlines | 89.1% | 37 min | 0.0% | 46 |
| SkyWest Airlines | 80.3% | 66 min | 1.1% | 845 |
| Delta Air Lines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MSP to IAD
On-time arrival % by scheduled departure hour (local time), 1,944 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 85.7% | 0.0% | 406 |
| 8am–9am | 90.6% | 0.0% | 53 |
| 9am–10am | 94.4% | 0.0% | 36 |
| 10am–11am | 81.6% | 0.9% | 220 |
| 11am–12pm | Limited data | 6 | |
| 12pm–1pm | 84.5% | 2.6% | 227 |
| 1pm–2pm | Limited data | 13 | |
| 2pm–3pm | 76.3% | 0.8% | 255 |
| 3pm–4pm | Limited data | 18 | |
| 5pm–6pm | Limited data | 27 | |
| 6pm–7pm | Limited data | 4 | |
| 7pm–8pm | 73.1% | 0.0% | 119 |
| 8pm–9pm | 81.9% | 1.2% | 560 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MSP 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) | 61.1% | -22.7 pts | 0.0% | 36 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.6% | -5.2 pts | 0.0% | 56 |
| Summer peak (Jun 15 - Aug 15) | 79.5% | -4.3 pts | 2.1% | 426 |
| All other days | 83.8% | — | 0.8% | 1,426 |
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).