Best Time to Fly MGW to IAD: On-Time Stats by Hour & Airline
Morgantown Municipal Walter L Bill Hart Field → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 81.7% of Morgantown (MGW) to Washington (IAD) flights arrived on time (362 scheduled flights). That is 4.1 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (89% on time) and January the worst month (60%).
The cancellation rate was 5.0% (US average 1.8%).
MGW 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 |
|---|---|---|---|---|
| SkyWest Airlines | 81.7% | 254 min | 5.0% | 362 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MGW to IAD
On-time arrival % by scheduled departure hour (local time), 592 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 81.0% | 4.2% | 500 |
| 8pm–9pm | 72.3% | 9.8% | 92 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MGW 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) | Limited data | 7 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 27 | ||
| Summer peak (Jun 15 - Aug 15) | 84.3% | +4.5 pts | 0.9% | 109 |
| All other days | 79.8% | — | 6.5% | 449 |
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).