Williston Basin International in December 2023

83.6%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 2023, reporting carriers scheduled 152 domestic departures from Williston Basin International (XWA). 83.6% left less than 15 minutes late and 85.5% reached their destination on time; 0.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so XWA departures were 0.5 points above the national departure figure.

Flights arriving at XWA that month were on time 88.2% of the time (152 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 64%, extreme weather 16% and late-arriving aircraft 10%.

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

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

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

Measure	Dec 2023	Year earlier	XWA, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	83.6%	—	79.1%	83.1%
Arrived on time	85.5%	—	76.5%	83.8%
Cancelled	0.0%	—	1.5%	0.4%
Average departure delay (late minutes only)	19.8 min	—	25.4 min	11.6 min
Scheduled departures a day	5	—	7	19,013
Scheduled departures	152	—	2,411	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	152	100%	85.5%	-0.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
XWA–DEN	Williston to Denver	92	85.9%	0.9 min	0.0%
XWA–MSP	Williston to Minneapolis	60	85.0%	-1.7 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	64.3%	37.1%	1,631
Late-arriving aircraft	10.1%	38.8%	256
National Aviation System	7.6%	17.6%	193
Extreme weather	15.6%	6.2%	396
Security	2.3%	0.3%	59

2,535 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 December 2023?

83.6% of 152 scheduled domestic departures left less than 15 minutes late, and 85.5% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 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 December 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.