OnTimeRoutes
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Bismarck Municipal Airport (BIS) delays & on-time performance

Bismarck/Mandan, North Dakota · 7 nonstop destinations · 4 airlines · Aug 2025 – Jul 2026

Live status todayFAA update Oct 11, 4:09 AM EDTAll US airport delays now →

No FAA-reported ground stops or delays at BIS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.

On-time arrivals
80%
arrived < 15 min late
Cancelled
0.7%
29 flights
Avg arrival delay
19 min
95 min when late
Departed on time
82%
avg taxi-out 21 min

Figures cover 3,874 departures from BIS; on-time is measured at arrival. Arrivals into BIS were on time 80% of the time.

Key facts

  • Flights departing Bismarck Municipal Airport (BIS) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
  • 0.7% were cancelled, and 8% arrived an hour or more late.
  • Delta Air Lines was the most punctual airline here (84% on time); Allegiant Air was the least (72%).
  • Departures scheduled around 6am did best (88% on time); around 6pm did worst (66%).
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (50%).

Most delayed routes from BIS

Lowest on-time arrival rates among regularly flown routes.

All 7 routes from BIS →

Most reliable routes from BIS

Highest on-time arrival rates among regularly flown routes.

Best airline at BIS

Departures from this airport, ranked by on-time arrival.

AirlineOn timeCancelledAvg delayRoutesFlights
Delta Air Lines84%0.3%14 min1375
Envoy Air81%0.9%17 min2997
SkyWest Airlines81%0.7%21 min32,127
Allegiant Air72%1.1%22 min3375

Best time to fly out of BIS

On-time arrival rate by scheduled departure hour (local time).

  • 5am87%378 flts
  • 6am88%593 flts
  • 7am79%154 flts
  • 8am83%199 flts
  • 9am78%270 flts
  • 11am85%326 flts
  • 12pm80%233 flts
  • 1pm81%659 flts
  • 2pm77%347 flts
  • 5pm72%414 flts
  • 6pm66%111 flts
  • 8pm80%40 flts
  • 9pm52%44 flts

Monthly trend

50%75%100%July 2025: 73.5% on time, 0.3% cancelledJul ’25August 2025: 79.1% on time, 0.0% cancelledAug ’25September 2025: 85.6% on time, 0.0% cancelledSep ’25October 2025: 85.6% on time, 0.0% cancelledOct ’25November 2025: 84.3% on time, 1.8% cancelledNov ’25December 2025: 65.6% on time, 1.9% cancelledDec ’25January 2026: 75.5% on time, 1.9% cancelledJan ’26February 2026: 82.6% on time, 0.9% cancelledFeb ’26March 2026: 76.3% on time, 1.7% cancelledMar ’26April 2026: 78.5% on time, 0.0% cancelledApr ’26May 2026: 84.9% on time, 0.0% cancelledMay ’26June 2026: 83.2% on time, 1.2% cancelledJun ’26July 2026: 85.1% on time, 0.3% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why departures were late

  • Airline (crew, maintenance, cleaning, fueling)50%
  • Late-arriving aircraft22%
  • Air traffic control & airport congestion18%
  • Extreme weather9%
  • Security1%

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.