Williston Basin International in December 2024

74.7%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 December 2024, reporting carriers scheduled 178 domestic departures from Williston Basin International (XWA). 74.7% left less than 15 minutes late and 69.7% reached their destination on time; 0.6% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so XWA departures were 3.1 points below the national departure figure.

A year earlier, in December 2023, the airport had 152 departures with 83.6% leaving on time: a change of −8.9 points, with flights up 17%.

Flights arriving at XWA that month were on time 74.7% of the time (178 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 58%, extreme weather 24% and late-arriving aircraft 10%.

On time 69.7%
Arrived 15+ minutes late 29.8%
Cancelled 0.6%
Diverted 0.0%

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

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

Measure	Dec 2024	Dec 2023	XWA, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	74.7%	83.6%	79.1%	77.8%
Arrived on time	69.7%	85.5%	76.5%	78.1%
Cancelled	0.6%	0.0%	1.5%	0.7%
Average departure delay (late minutes only)	47.0 min	19.8 min	25.4 min	16.6 min
Scheduled departures a day	6	5	7	19,686
Scheduled departures	178	152	2,411	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	178	100%	69.7%	39.7 min	0.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
XWA–DEN	Williston to Denver	114	77.2%	20.2 min	0.9%
XWA–MSP	Williston to Minneapolis	64	56.3%	74.2 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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	58.1%	34.3%	4,773
Late-arriving aircraft	10.3%	40.2%	848
National Aviation System	8.0%	17.8%	656
Extreme weather	23.6%	7.5%	1,935
Security	0.0%	0.2%	0

8,212 delay minutes on 53 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 December 2024?

74.7% of 178 scheduled domestic departures left less than 15 minutes late, and 69.7% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 83.6% of 152 departures left on time and 0.0% were cancelled, against 74.7% and 0.6% in December 2024.

Provenance

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