Bismarck Municipal in July 2025

74.1%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 July 2025, reporting carriers scheduled 390 domestic departures from Bismarck Municipal (BIS). 74.1% left less than 15 minutes late and 71.8% reached their destination on time; 0.3% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so BIS departures were 4.4 points above the national departure figure.

A year earlier, in July 2024, the airport had 357 departures with 78.7% leaving on time: a change of −4.6 points, with flights up 9%.

Flights arriving at BIS that month were on time 68.5% of the time (390 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 51%, late-arriving aircraft 19% and national aviation system 17%.

On time 71.8%
Arrived 15+ minutes late 25.9%
Cancelled 0.3%
Diverted 2.1%

Every scheduled departure from BIS in July 2025, judged by arrival at the destination.

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

Measure	Jul 2025	Jul 2024	BIS, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	74.1%	78.7%	81.5%	69.7%
Arrived on time	71.8%	74.5%	79.5%	69.0%
Cancelled	0.3%	1.1%	0.7%	2.5%
Average departure delay (late minutes only)	25.6 min	18.4 min	18.7 min	24.3 min
Scheduled departures a day	13	12	11	21,048
Scheduled departures	390	357	3,874	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	218	56%	73.9%	16.5 min	0.5%
MQ Envoy Air	93	24%	67.7%	7.7 min	0.0%
DL Delta Air Lines	56	14%	69.6%	27.1 min	0.0%
G4 Allegiant Air	23	6%	73.9%	7.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BIS–DEN	Bismarck/Mandan to Denver	154	70.1%	19.6 min	0.6%
BIS–MSP	Bismarck/Mandan to Minneapolis	120	76.7%	17.5 min	0.0%
BIS–DFW	Bismarck/Mandan to Dallas/Fort Worth	62	80.6%	1.0 min	0.0%
BIS–ORD	Bismarck/Mandan to Chicago	31	41.9%	20.7 min	0.0%
BIS–AZA	Bismarck/Mandan to Phoenix	14	85.7%	0.6 min	0.0%
BIS–LAS	Bismarck/Mandan to Las Vegas	9	55.6%	18.8 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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	50.6%	31.1%	4,362
Late-arriving aircraft	19.1%	40.8%	1,652
National Aviation System	17.3%	20.7%	1,491
Extreme weather	11.8%	7.3%	1,014
Security	1.3%	0.1%	110

8,629 delay minutes on 101 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 July 2025?

74.1% of 390 scheduled domestic departures left less than 15 minutes late, and 71.8% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 78.7% of 357 departures left on time and 1.1% were cancelled, against 74.1% and 0.3% in July 2025.

Provenance

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