FlightRecord

Bismarck Municipal Airport (BIS): Delays & On-Time Performance

Data through July 2026

Bismarck Municipal Airport (BIS) is a tale of two seasons: departures ran 91% on-time in October 2024 but sank to 66% in December 2025. Across the year it averages 81% against a national 78%, over roughly 11 departures a day to 9 destinations.

Departures on-time
81%
left <15 min late
Avg dep delay
19 min
Arrivals on-time
80%
Cancelled
0.7%
Destinations
9
nonstop
Airlines
5

Plan your departure from BIS

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time
Around 6 a.m.
89% on-time
Best day to fly
Tuesday
82% on-time
Most reliable airline here
Delta Air Lines
88% on-time from BIS
Cancellation risk
0.7%
below the US average
Check routes from BIS ↓Compare nearby airports ↓

Monthly on-time trend

Monthly departure on-time percentage at BIS50%75%100%August 2024: 85% on-time (352 flights)85Aug 2024September 2024: 86% on-time (351 flights)86October 2024: 91% on-time (375 flights)91November 2024: 81% on-time (353 flights)81Nov 2024December 2024: 77% on-time (389 flights)77January 2025: 73% on-time (366 flights)73February 2025: 76% on-time (352 flights)76Feb 2025March 2025: 83% on-time (408 flights)83April 2025: 80% on-time (347 flights)80May 2025: 83% on-time (289 flights)83May 2025June 2025: 79% on-time (368 flights)79July 2025: 74% on-time (390 flights)74August 2025: 80% on-time (401 flights)80Aug 2025September 2025: 86% on-time (369 flights)86October 2025: 84% on-time (334 flights)84November 2025: 88% on-time (280 flights)88Nov 2025December 2025: 66% on-time (366 flights)66January 2026: 77% on-time (266 flights)77February 2026: 84% on-time (233 flights)84Feb 2026March 2026: 80% on-time (293 flights)80April 2026: 87% on-time (336 flights)87May 2026: 86% on-time (306 flights)86May 2026June 2026: 84% on-time (335 flights)84July 2026: 86% on-time (355 flights)86

Best time of day to depart from BIS

On-time percentage by scheduled departure hour at BIS5 a.m.: 87% on-time (890 flights)56 a.m.: 89% on-time (1,191 flights)67 a.m.: 89% on-time (499 flights)78 a.m.: 78% on-time (428 flights)89 a.m.: 81% on-time (459 flights)911 a.m.: 87% on-time (748 flights)1112 p.m.: 82% on-time (385 flights)121 p.m.: 82% on-time (1,222 flights)132 p.m.: 75% on-time (761 flights)143 p.m.: 78% on-time (272 flights)155 p.m.: 70% on-time (1,056 flights)176 p.m.: 70% on-time (139 flights)187 p.m.: 71% on-time (104 flights)199 p.m.: 71% on-time (122 flights)21scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday79%21 min
Tuesdaybest82%16 min
Wednesday79%16 min
Thursday78%22 min
Friday78%21 min
Saturday79%18 min
Sunday79%19 min

Next: compare the busiest routes from BIS ↓

Busiest routes from BIS

RouteFlights/12moOn-timeAvg delay
BIS → DEN (Denver)1,46677%24 min
BIS → MSP (Minneapolis)1,03283%16 min
BIS → DFW (Dallas/Fort Worth)72778%16 min
BIS → ORD (Chicago)27473%22 min
BIS → AZA (Phoenix)24476%19 min
BIS → LAS (Las Vegas)11681%15 min

Compare airlines departing BIS ↓

Where flights into BIS come from

RouteFlights/12moOn-timeAvg delay
DEN (Denver) → BIS1,46676%21 min
MSP (Minneapolis) → BIS1,03282%15 min
DFW (Dallas/Fort Worth) → BIS72780%13 min
ORD (Chicago) → BIS27484%10 min
AZA (Phoenix) → BIS24385%8 min
LAS (Las Vegas) → BIS11690%7 min

Most reliable routes

  1. BIS → MSP83%
  2. BIS → LAS81%
  3. BIS → DFW78%
  4. BIS → DEN77%
  5. BIS → AZA76%

Most delay-prone routes

  1. BIS → ORD73%
  2. BIS → AZA76%
  3. BIS → DEN77%
  4. BIS → DFW78%
  5. BIS → LAS81%

What causes delays at BIS

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing BIS.

  • Late-arriving aircraft20%
  • Airline operations51%
  • National airspace system18%
  • Weather11%
  • Security1%

Alternative airports near Bismarck/Mandan

Other airports within 120 miles, compared on departure reliability.

AirportDistanceOn-time departuresAvg delay
DIK — Dickinson Theodore Roosevelt Regional Airport97 mi83%23 min
JMS — Jamestown Regional Airport98 mi84%19 min
MOT — Minot International Airport106 mi82%20 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at BIS

AirlineOn-time departuresAvg delayFlights
Delta Air Lines88%14 min941
Envoy Air81%15 min1,843
Allegiant Air81%17 min952
SkyWest Airlines80%22 min4,825

Frequently asked questions

How often are flights delayed at BIS?
19% of departures from Bismarck Municipal Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 19 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from BIS?
Flights scheduled around 6 a.m. depart on time 89% of the time at BIS, versus 70% around 6 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at BIS?
In this dataset, December 2025 was the weakest month at BIS, with 66% of departures on time.
How often are flights cancelled at BIS?
0.7% of scheduled departures from BIS were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 8,571 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.