Jamestown Regional (JMS) Delays and On-Time Departures
Jamestown, ND · ranked 80th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Jamestown (JMS) had 627 scheduled departures and 83.7% of them left on time (US average 77.4%).
That ranks 80th of 333 US airports tracked on this site, with 2.1% of departures cancelled.
Over 24 months, Sunday was the most reliable day (89% on time) and July the worst month (78%).
Best time of day to fly out of Jamestown (JMS)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 11am–12pm | 90.2% | 1.7% | 291 |
| 12pm–1pm | Limited data | 30 | |
| 1pm–2pm | 84.5% | 2.8% | 253 |
| 4pm–5pm | 80.5% | 0.0% | 82 |
| 5pm–6pm | 86.1% | 3.2% | 246 |
| 6pm–7pm | 77.6% | 2.3% | 398 |
Airlines at JMS ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 83.7% | 78.1% | 2.1% | 627 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of JMS
On-time departures by day, 24 months.
Best month to fly out of JMS
On-time departures by month, 24 months.
Holiday travel at Jamestown (JMS)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 88.5% | +4.2 pts | 5.5% | 55 |
| Summer peak (Jun 15 - Aug 15) | 80.1% | -4.1 pts | 2.8% | 217 |
| All other days | 84.2% | — | 2.1% | 1,004 |
Monthly on-time departure trend at JMS
On-time departure % each month, with the 12-month US average for reference.
Routes from Jamestown (JMS)
Every route from JMS with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| JMS → Denver (DEN) | 78.1% | 2.1% | 627 |