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Airport Reliability

JMS · Jamestown

Jamestown, ND (JMS)

83%
Departures within 15 minutes
10 min
Average departure delay
86%
Arrivals within 15 minutes
2.5%
Departures cancelled

Based on 630 departures and 630 arrivals. Data through May 2026.

What the data says

The 12–3 PM departure wins.

Departures from JMS departing between 12–3 PM arrived on time 90% of the time, versus 71% between 6–9 PM.

Saturdays have been rough.

Departures from JMS arrived on time 88% of the time on Sundays and just 63% on Saturdays. That gap is worth planning around.

Ticking up lately.

Departures from JMS arrived on time 83% of the time over the last three months in the data, compared with 77% in the three months before that.

When JMS gets messy

On-time by departure window
  • 9 AM–12 PM89%(242 flights)
  • 12–3 PM90%(20 flights)
  • 3–6 PM83%(24 flights)
  • 6–9 PM71%(327 flights)
On-time by weekday
  • Mon81%(101 flights)
  • Tue69%(55 flights)
  • Wed86%(100 flights)
  • Thu78%(98 flights)
  • Fri79%(101 flights)
  • Sat63%(54 flights)
  • Sun88%(104 flights)
On-time trend by month
81%
May

Jun 87% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%53
July 202565%52
August 202567%52
September 202582%51
October 202577%53
November 202596%50
December 202573%51
January 202678%50
February 202680%46
March 202685%52
April 202682%50
May 202681%53

Airlines departing JMS

Busiest routes from JMS

Based on 630 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.