Williston Basin International in March 2026

72.1%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 March 2026, reporting carriers scheduled 208 domestic departures from Williston Basin International (XWA). 72.1% left less than 15 minutes late and 70.7% reached their destination on time; 3.8% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so XWA departures were 0.7 points below the national departure figure.

A year earlier, in March 2025, the airport had 176 departures with 84.7% leaving on time: a change of −12.6 points, with flights up 18%.

Flights arriving at XWA that month were on time 69.1% of the time (207 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 80%, national aviation system 11% and late-arriving aircraft 6%.

On time 70.7%
Arrived 15+ minutes late 25.0%
Cancelled 3.8%
Diverted 0.5%

Every scheduled departure from XWA in March 2026, judged by arrival at the destination.

March 2026 against a year earlier, the airport's year and the nation

Measure	Mar 2026	Mar 2025	XWA, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	72.1%	84.7%	79.1%	72.8%
Arrived on time	70.7%	80.7%	76.5%	73.2%
Cancelled	3.8%	0.0%	1.5%	2.9%
Average departure delay (late minutes only)	37.6 min	15.6 min	25.4 min	20.3 min
Scheduled departures a day	7	6	7	20,403
Scheduled departures	208	176	2,411	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	208	100%	70.7%	22.0 min	3.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
XWA–DEN	Williston to Denver	119	65.5%	24.3 min	2.5%
XWA–MSP	Williston to Minneapolis	89	77.5%	18.8 min	5.6%

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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	79.6%	33.5%	5,708
Late-arriving aircraft	6.2%	39.3%	445
National Aviation System	10.7%	21.0%	767
Extreme weather	3.5%	5.9%	248
Security	0.0%	0.2%	0

7,168 delay minutes on 52 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 March 2026?

72.1% of 208 scheduled domestic departures left less than 15 minutes late, and 70.7% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 84.7% of 176 departures left on time and 0.0% were cancelled, against 72.1% and 3.8% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.