Williston, ND

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Williston, ND, NDISN

On-Time Rate

86.4%

2019-2025

Avg Delay

11.4 min

when delayed

Cancel Rate

0.7%

flights cancelled

Total Flights

581

2019-2025

Best Month

May

91.9% on-time

Worst Month

Mar

66.1% on-time

Best Departure Time

20:00

100.0% on-time

12-Month On-Time Trend

Delay Causes

Best Time to Fly (By Hour)

Seasonal Pattern

Airlines at ISN

AirlineFlightsOn-TimeAvg Delay
SkyWest Airlines58186.4%0.0 min

Most Delayed Routes

DestinationOn-Time
ISNMSPMinneapolis, MN86.3%

Most Punctual Routes

DestinationOn-Time
ISNMSPMinneapolis, MN86.3%

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Data source: Bureau of Transportation Statistics (BTS) On-Time Performance dataset. Statistics are based on reported flight data from 2019-2025. See our data methodology for details.