Best Time to Fly IAD to MSP: On-Time Stats by Hour & Airline
Washington Dulles International → Minneapolis-St Paul International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 85.2% of Washington (IAD) to Minneapolis (MSP) flights arrived on time (983 scheduled flights). That is 7.5 points above the national average of 77.6%.
United Airlines was the most punctual of the 3 airlines on the route at 87.0%, while Republic Airways trailed at 82.1%.
October has been the best month (94% on time) and Friday the weakest day of the week (83%).
1.5% of flights were cancelled, versus 1.8% nationally.
IAD to MSP 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 | 87.0% | 40 min | 0.0% | 46 |
| SkyWest Airlines | 85.3% | 99 min | 1.2% | 846 |
| Republic Airways | 82.1% | 76 min | 5.6% | 89 |
| Delta Air Lines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAD to MSP
On-time arrival % by scheduled departure hour (local time), 1,947 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 90.7% | 0.7% | 606 |
| 7am–8am | 86.0% | 5.1% | 98 |
| 8am–9am | 86.7% | 2.6% | 77 |
| 9am–10am | 85.7% | 2.3% | 43 |
| 11am–12pm | 82.6% | 0.0% | 242 |
| 12pm–1pm | 88.5% | 0.0% | 182 |
| 1pm–2pm | Limited data | 27 | |
| 2pm–3pm | 78.3% | 1.6% | 123 |
| 3pm–4pm | 88.9% | 0.8% | 127 |
| 5pm–6pm | 75.8% | 0.0% | 62 |
| 6pm–7pm | 77.7% | 1.6% | 321 |
| 7pm–8pm | 78.4% | 0.0% | 38 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAD to MSP
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% | +2.8 pts | 0.0% | 36 |
| Christmas & New Year (Dec 20 - Jan 3) | 89.3% | +3.2 pts | 0.0% | 56 |
| Summer peak (Jun 15 - Aug 15) | 80.8% | -5.3 pts | 1.9% | 426 |
| All other days | 86.0% | — | 1.0% | 1,429 |
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).