Williston Basin International in September 2024

88.4%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 2024, reporting carriers scheduled 172 domestic departures from Williston Basin International (XWA). 88.4% left less than 15 minutes late and 85.5% reached their destination on time; 0.0% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so XWA departures were 4.0 points above the national departure figure.

A year earlier, in September 2023, the airport had 150 departures with 85.3% leaving on time: a change of +3.1 points, with flights up 15%.

Flights arriving at XWA that month were on time 91.3% of the time (172 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 69%, national aviation system 13% and extreme weather 8%.

On time 85.5%
Arrived 15+ minutes late 14.5%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from XWA in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	XWA, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	88.4%	85.3%	79.1%	84.4%
Arrived on time	85.5%	85.3%	76.5%	83.9%
Cancelled	0.0%	0.0%	1.5%	0.6%
Average departure delay (late minutes only)	10.0 min	12.7 min	25.4 min	10.6 min
Scheduled departures a day	6	5	7	19,421
Scheduled departures	172	150	2,411	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	172	100%	85.5%	-3.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
XWA–DEN	Williston to Denver	112	86.6%	-8.8 min	0.0%
XWA–MSP	Williston to Minneapolis	60	83.3%	6.7 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	68.6%	38.6%	1,187
Late-arriving aircraft	5.0%	38.4%	86
National Aviation System	13.2%	18.2%	228
Extreme weather	7.7%	4.8%	134
Security	5.5%	0.1%	95

1,730 delay minutes on 25 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 2024?

88.4% of 172 scheduled domestic departures left less than 15 minutes late, and 85.5% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 85.3% of 150 departures left on time and 0.0% were cancelled, against 88.4% and 0.0% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; 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.