Williston Basin International in September 2023

85.3%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2023, reporting carriers scheduled 150 domestic departures from Williston Basin International (XWA). 85.3% left less than 15 minutes late and 85.3% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so XWA departures were 4.8 points above the national departure figure.

Flights arriving at XWA that month were on time 82.0% of the time (150 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 87%, late-arriving aircraft 7% and extreme weather 6%.

On time 85.3%
Arrived 15+ minutes late 14.7%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from XWA in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	XWA, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	85.3%	—	79.1%	80.5%
Arrived on time	85.3%	—	76.5%	80.1%
Cancelled	0.0%	—	1.5%	1.2%
Average departure delay (late minutes only)	12.7 min	—	25.4 min	14.1 min
Scheduled departures a day	5	—	7	18,978
Scheduled departures	150	—	2,411	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	150	100%	85.3%	-0.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
XWA–DEN	Williston to Denver	90	87.8%	1.1 min	0.0%
XWA–MSP	Williston to Minneapolis	60	81.7%	-2.0 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	87.4%	36.4%	1,461
Late-arriving aircraft	6.5%	38.3%	108
National Aviation System	0.0%	19.9%	0
Extreme weather	6.1%	5.1%	102
Security	0.0%	0.2%	0

1,671 delay minutes on 22 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left XWA on time in September 2023?

85.3% of 150 scheduled domestic departures left less than 15 minutes late, and 85.3% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for XWA · methodology · corrections.