Williston Basin International in June 2025

78.1%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 June 2025, reporting carriers scheduled 210 domestic departures from Williston Basin International (XWA). 78.1% left less than 15 minutes late and 70.5% reached their destination on time; 1.0% were cancelled.

Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so XWA departures were 6.7 points above the national departure figure.

A year earlier, in June 2024, the airport had 170 departures with 78.2% leaving on time: a change of −0.1 points, with flights up 24%.

Flights arriving at XWA that month were on time 71.9% of the time (210 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 38%, air carrier 36% and late-arriving aircraft 20%.

On time 70.5%
Arrived 15+ minutes late 27.1%
Cancelled 1.0%
Diverted 1.4%

Every scheduled departure from XWA in June 2025, judged by arrival at the destination.

June 2025 against a year earlier, the airport's year and the nation

Measure	Jun 2025	Jun 2024	XWA, 12 months to Jul 2026	All reported flights, Jun 2025
Departed on time	78.1%	78.2%	79.1%	71.4%
Arrived on time	70.5%	72.9%	76.5%	70.3%
Cancelled	1.0%	0.0%	1.5%	1.6%
Average departure delay (late minutes only)	28.1 min	19.3 min	25.4 min	22.1 min
Scheduled departures a day	7	6	7	20,386
Scheduled departures	210	170	2,411	611,575

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	210	100%	70.5%	23.7 min	1.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
XWA–DEN	Williston to Denver	150	65.3%	29.8 min	1.3%
XWA–MSP	Williston to Minneapolis	60	83.3%	9.2 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), June 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2025	Minutes
Air carrier	35.6%	31.6%	2,158
Late-arriving aircraft	19.5%	40.6%	1,182
National Aviation System	37.8%	20.9%	2,294
Extreme weather	7.1%	6.9%	432
Security	0.0%	0.2%	0

6,066 delay minutes on 57 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 June 2025?

78.1% of 210 scheduled domestic departures left less than 15 minutes late, and 70.5% reached their destination on time. The national figures that month were 71.4% and 70.3%.

How does that compare with a year earlier?

In June 2024, 78.2% of 170 departures left on time and 0.0% were cancelled, against 78.1% and 1.0% in June 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2025; 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.