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Route · BIS → DEN · 2020–2025 BTS data

Bismarck/Mandan to Denver

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BIS to DEN (Bismarck/Mandan to Denver) ranks #1835 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80%
On-time
+1 pts
vs US avg
97 min
Delay when late
6,872
Flights
#1835 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Oct 2024 92%

Worst Month

Jan 2025 62%

Distance

516 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 122 40 0 1 OO
Nov 2025 116 12 3 1 OO
Oct 2025 120 16 0 0 OO
Sep 2025 137 21 0 0 OO
Aug 2025 152 41 0 2 OO
Jul 2025 154 39 1 6 OO
Jun 2025 150 45 2 3 OO
May 2025 134 37 2 3 OO
Apr 2025 120 38 0 0 OO
Mar 2025 124 21 0 0 OO
Feb 2025 112 35 6 2 OO
Jan 2025 124 47 1 0 OO
Dec 2024 125 22 0 0 OO
Nov 2024 118 27 3 0 OO
Oct 2024 124 10 0 0 OO
Sep 2024 120 18 0 1 OO
Aug 2024 106 24 0 0 OO
Jul 2024 93 18 0 1 OO
Jun 2024 95 26 1 1 OO
May 2024 122 24 2 1 OO
Apr 2024 90 12 1 2 OO
Mar 2024 93 9 4 0 OO
Feb 2024 87 24 0 1 OO
Jan 2024 93 23 6 0 OO

BIS–DEN seasonal on-time pattern

Best: October (87.1%) · weakest: February (73.4%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 76.6%

Strongest calendar month

October

87.1% on-time · ~106 flights/mo

Busiest calendar month

August

~110 flights/mo avg

Weakest calendar month

February

73.4% on-time · ~77 flights/mo

Cancellation Rate

1.1%

32 of 2,831 flights

Diversion Rate

0.9%

25 of 2,831 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

BIS - Bismarck/Mandan

Full on-time, delay-cause, and seasonal performance for Bismarck/Mandan, ND.

BIS on-time profile

DEN - Denver

Full on-time, delay-cause, and seasonal performance for Denver, CO.

DEN on-time profile

Compare the two airports

See BIS and DEN side by side on delays, cancellations, and reliability.

Compare BIS vs DEN

Origin-hub reliability standing

Mid-pack among BIS departures

From BIS, this corridor sits with 2 other 75–85% on-time routes out of 3 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 0 below 75%). Destination: Denver · fleet on-time rank #3126 of 4927.

What the Data Says About BIS to DEN

6,872 tracked flights put the BIS to DEN pairing (Bismarck/Mandan to Denver) at a 80% on-time rate, squarely in line with the wider network. Delays that do occur run 96.9 minutes on average. Across the 516-mile route and its 3 carriers, the trailing 24 months show 1.1% cancelled and 0.9% diverted (2,831 flights sampled).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 92% on-time, while Jan 2025 came in at just 62% - a 30-point swing worth factoring into travel timing.

On the multi-year calendar, BIS–DEN peaks in October at 87.1% on-time while August carries the heaviest traffic (~110 flights per month) ; the softest month is February at 73.4%, a 13.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BIS to DEN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BIS to DEN ranks #1835 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from BIS to DEN? ▼
Flights from Bismarck/Mandan to Denver have a 80% on-time rate based on 6,872 flights. The average delay is 96.9 minutes. The best recent month was Oct 2024 with 92% on-time.
What is the cancellation rate for BIS to DEN? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (32 of 2,831 flights) and 0.9% were diverted.
How far is the flight from BIS to DEN? ▼
The flight distance from Bismarck/Mandan (BIS) to Denver (DEN) is approximately 516 miles. This route is served by 3 carriers.
When is the best time to fly from BIS to DEN? ▼
The best recent month for on-time performance was Oct 2024 (92% on-time). The worst was Jan 2025 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

BIS Airport

Bismarck/Mandan
DEN Airport

Denver
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using BIS–DEN data

BIS–DEN is mid-pack at 80% on-time; month and carrier mix move more than the corridor headline.

  • Compare BIS and DEN airport profiles: delay causes and top routes differ even on the same corridor. BIS airport
  • If your dates flex, October (87.1% on-time) beats February (73.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.