Best Time to Fly IAD to MGW: On-Time Stats by Hour & Airline
Washington Dulles International → Morgantown Municipal Walter L Bill Hart Field
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 73.7% of Washington (IAD) to Morgantown (MGW) flights arrived on time (362 scheduled flights). That is 4.0 points below 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 (81% on time) and December the worst month (67%).
The cancellation rate was 6.1% (US average 1.8%).
IAD to MGW 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 | 73.7% | 208 min | 6.1% | 362 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAD to MGW
On-time arrival % by scheduled departure hour (local time), 593 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 81.5% | 2.8% | 289 |
| 9am–10am | 73.1% | 14.5% | 62 |
| 12pm–1pm | Limited data | 1 | |
| 10pm–11pm | 72.0% | 7.0% | 241 |
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 MGW
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) | 77.1% | -0.5 pts | 2.8% | 109 |
| All other days | 77.6% | — | 6.7% | 450 |
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).