Bismarck Municipal in June 2026

83.3%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 2026, reporting carriers scheduled 335 domestic departures from Bismarck Municipal (BIS). 83.3% left less than 15 minutes late and 81.5% reached their destination on time; 1.2% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so BIS departures were 11.1 points above the national departure figure.

A year earlier, in June 2025, the airport had 368 departures with 78.5% leaving on time: a change of +4.8 points, with flights down 9%.

Flights arriving at BIS that month were on time 79.2% of the time (336 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 27% and extreme weather 17%.

On time 81.5%
Arrived 15+ minutes late 16.4%
Cancelled 1.2%
Diverted 0.9%

Every scheduled departure from BIS in June 2026, judged by arrival at the destination.

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

Measure	Jun 2026	Jun 2025	BIS, 12 months to Jul 2026	All reported flights, Jun 2026
Departed on time	83.3%	78.5%	81.5%	72.2%
Arrived on time	81.5%	74.7%	79.5%	72.8%
Cancelled	1.2%	0.5%	0.7%	1.6%
Average departure delay (late minutes only)	22.1 min	18.2 min	18.7 min	20.6 min
Scheduled departures a day	11	12	11	20,253
Scheduled departures	335	368	3,874	607,577

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	193	58%	86.0%	6.7 min	1.0%
MQ Envoy Air	90	27%	78.9%	12.9 min	1.1%
DL Delta Air Lines	30	9%	86.7%	-5.8 min	0.0%
G4 Allegiant Air	22	7%	45.5%	22.5 min	4.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BIS–DEN	Bismarck/Mandan to Denver	116	82.8%	19.4 min	0.0%
BIS–MSP	Bismarck/Mandan to Minneapolis	107	89.7%	-10.8 min	1.9%
BIS–DFW	Bismarck/Mandan to Dallas/Fort Worth	60	81.7%	11.0 min	1.7%
BIS–ORD	Bismarck/Mandan to Chicago	30	73.3%	16.6 min	0.0%
BIS–AZA	Bismarck/Mandan to Phoenix	14	14.3%	41.9 min	7.1%
BIS–LAS	Bismarck/Mandan to Las Vegas	8	100.0%	-9.1 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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2026	Minutes
Air carrier	44.9%	30.8%	3,265
Late-arriving aircraft	26.9%	42.1%	1,958
National Aviation System	10.9%	20.3%	795
Extreme weather	17.3%	6.7%	1,260
Security	0.0%	0.1%	0

7,278 delay minutes on 55 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 BIS on time in June 2026?

83.3% of 335 scheduled domestic departures left less than 15 minutes late, and 81.5% reached their destination on time. The national figures that month were 72.2% and 72.8%.

How does that compare with a year earlier?

In June 2025, 78.5% of 368 departures left on time and 0.5% were cancelled, against 83.3% and 1.2% in June 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BIS · methodology · corrections.