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831 km · Domestic

Bismarck (BIS) – Denver (DEN)

In July 2026, 236 flights operated between Bismarck and Denver (both directions), and 74.2% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January247236▼ 4.5%
February211210▼ 0.5%
March248233▼ 6.0%
April2382380.0%
May264242▼ 8.3%
June294232▼ 21.1%
July305236▼ 22.6%
August303––
September274––
October240–in progress
November226––
December244––
Year to date (Jan–Jul)1,8071,627▼ 10.0%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January64.4%72.9%▲ 13.2%
February67.8%81.0%▲ 19.5%
March81.9%81.1%▼ 1.0%
April74.8%81.1%▲ 8.4%
May75.0%84.3%▲ 12.4%
June70.7%81.0%▲ 14.6%
July76.7%74.2%▼ 3.3%
August70.0%––
September85.8%––
October84.2%–in progress
November92.0%––
December68.9%––
Year-to-date average (Jan–Jul)73.0%79.4%▲ 8.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January12▲ 100.0%
February132▼ 84.6%
March07–
April20▼ 100.0%
May40▼ 100.0%
June60▼ 100.0%
July30▼ 100.0%
August1––
September0––
October0–in progress
November6––
December0––
Year to date (Jan–Jul)2911▼ 62.1%

By direction

BIS → DEN

Scheduled flights
2,707
Flights operated
2,683
Cancelled
24 · 0.9%
On-time departures
78.5%

DEN → BIS

Scheduled flights
2,707
Flights operated
2,676
Cancelled
31 · 1.1%
On-time departures
77.5%

BIS → DEN and DEN → BIS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 5,414 100.0% 78.0% 55

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay10:00–11:007.0min · 567 recorded · 565 measured
Gap to highest-delay hour23.3min10:00 ↔ 08:00
Recorded flights5,414BIS–DEN

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 82.7% · 305 recorded · 300 measured · Source: the US BTS 06:00 · 87.1% · 348 recorded · 348 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 122 recorded · 121 measured · Source: the US BTS 08:00 · 74.2% · 298 recorded · 294 measured · Source: the US BTS 09:00 · 81.5% · 445 recorded · 443 measured · Source: the US BTS 10:00 · 83.9% · 567 recorded · 565 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 120 recorded · 119 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · 80.7% · 1,149 recorded · 1,139 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 160 recorded · 160 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 66.5% · 1,027 recorded · 1,014 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 155 recorded · 153 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 92 recorded · 90 measured · Source: the US BTS 20:00 · 73.9% · 427 recorded · 421 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 195 recorded · 188 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 19.7 min · 305 recorded · 300 measured · Source: the US BTS 06:00 · 10.4 min · 348 recorded · 348 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 122 recorded · 121 measured · Source: the US BTS 08:00 · 30.3 min · 298 recorded · 294 measured · Source: the US BTS 09:00 · 17.5 min · 445 recorded · 443 measured · Source: the US BTS 10:00 · 7.0 min · 567 recorded · 565 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 120 recorded · 119 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · 13.8 min · 1,149 recorded · 1,139 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 160 recorded · 160 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 29.1 min · 1,027 recorded · 1,014 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 155 recorded · 153 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 92 recorded · 90 measured · Source: the US BTS 20:00 · 28.2 min · 427 recorded · 421 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 195 recorded · 188 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 305 · 305 recorded · 300 measured · Source: the US BTS 06:00 · 348 · 348 recorded · 348 measured · Source: the US BTS 07:00 · 122 · 122 recorded · 121 measured · Source: the US BTS 08:00 · 298 · 298 recorded · 294 measured · Source: the US BTS 09:00 · 445 · 445 recorded · 443 measured · Source: the US BTS 10:00 · 567 · 567 recorded · 565 measured · Source: the US BTS 11:00 · 120 · 120 recorded · 119 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · 1,149 · 1,149 recorded · 1,139 measured · Source: the US BTS 14:00 · 160 · 160 recorded · 160 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 1,027 · 1,027 recorded · 1,014 measured · Source: the US BTS 18:00 · 155 · 155 recorded · 153 measured · Source: the US BTS 19:00 · 92 · 92 recorded · 90 measured · Source: the US BTS 20:00 · 427 · 427 recorded · 421 measured · Source: the US BTS 21:00 · 195 · 195 recorded · 188 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · 4 · 4 recorded · 4 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:0082.7%19.7 min300305
06:0087.1%10.4 min348348
07:00Fewer than 200 measured departures—121122
08:0074.2%30.3 min294298
09:0081.5%17.5 min443445
10:0083.9%7.0 min565567
11:00Fewer than 200 measured departures—119120
12:00No observations———
13:0080.7%13.8 min1,1391,149
14:00Fewer than 200 measured departures—160160
15:00No observations———
16:00No observations———
17:0066.5%29.1 min1,0141,027
18:00Fewer than 200 measured departures—153155
19:00Fewer than 200 measured departures—9092
20:0073.9%28.2 min421427
21:00Fewer than 200 measured departures—188195
22:00No observations———
23:00Fewer than 200 measured departures—44

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 75.9% · 788 recorded · 779 measured · Source: the US BTS Tuesday · 81.4% · 787 recorded · 772 measured · Source: the US BTS Wednesday · 80.2% · 785 recorded · 781 measured · Source: the US BTS Thursday · 76.4% · 776 recorded · 775 measured · Source: the US BTS Friday · 77.8% · 786 recorded · 770 measured · Source: the US BTS Saturday · 76.8% · 707 recorded · 701 measured · Source: the US BTS Sunday · 77.5% · 785 recorded · 781 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 21.4 min · 788 recorded · 779 measured · Source: the US BTS Tuesday · 16.0 min · 787 recorded · 772 measured · Source: the US BTS Wednesday · 16.2 min · 785 recorded · 781 measured · Source: the US BTS Thursday · 19.5 min · 776 recorded · 775 measured · Source: the US BTS Friday · 16.6 min · 786 recorded · 770 measured · Source: the US BTS Saturday · 19.3 min · 707 recorded · 701 measured · Source: the US BTS Sunday · 22.9 min · 785 recorded · 781 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 788 · 788 recorded · 779 measured · Source: the US BTS Tuesday · 787 · 787 recorded · 772 measured · Source: the US BTS Wednesday · 785 · 785 recorded · 781 measured · Source: the US BTS Thursday · 776 · 776 recorded · 775 measured · Source: the US BTS Friday · 786 · 786 recorded · 770 measured · Source: the US BTS Saturday · 707 · 707 recorded · 701 measured · Source: the US BTS Sunday · 785 · 785 recorded · 781 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday75.9%21.4 min779788
Tuesday81.4%16.0 min772787
Wednesday80.2%16.2 min781785
Thursday76.4%19.5 min775776
Friday77.8%16.6 min770786
Saturday76.8%19.3 min701707
Sunday77.5%22.9 min781785

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 68.5% · 486 recorded · 483 measured · Source: the US BTS Feb · 74.4% · 436 recorded · 421 measured · Source: the US BTS Mar · 81.5% · 488 recorded · 481 measured · Source: the US BTS Apr · 77.9% · 478 recorded · 476 measured · Source: the US BTS May · 79.5% · 510 recorded · 506 measured · Source: the US BTS Jun · 75.3% · 532 recorded · 526 measured · Source: the US BTS Jul · 75.6% · 544 recorded · 541 measured · Source: the US BTS Aug · 70.0% · 304 recorded · 303 measured · Source: the US BTS Sep · 85.8% · 274 recorded · 274 measured · Source: the US BTS Oct · 87.5% · 400 recorded · 400 measured · Source: the US BTS Nov · 85.5% · 468 recorded · 454 measured · Source: the US BTS Dec · 76.9% · 494 recorded · 494 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 28.3 min · 486 recorded · 483 measured · Source: the US BTS Feb · 27.2 min · 436 recorded · 421 measured · Source: the US BTS Mar · 14.0 min · 488 recorded · 481 measured · Source: the US BTS Apr · 17.4 min · 478 recorded · 476 measured · Source: the US BTS May · 16.8 min · 510 recorded · 506 measured · Source: the US BTS Jun · 22.4 min · 532 recorded · 526 measured · Source: the US BTS Jul · 18.7 min · 544 recorded · 541 measured · Source: the US BTS Aug · 29.3 min · 304 recorded · 303 measured · Source: the US BTS Sep · 9.2 min · 274 recorded · 274 measured · Source: the US BTS Oct · 6.6 min · 400 recorded · 400 measured · Source: the US BTS Nov · 9.2 min · 468 recorded · 454 measured · Source: the US BTS Dec · 24.6 min · 494 recorded · 494 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 486 · 486 recorded · 483 measured · Source: the US BTS Feb · 436 · 436 recorded · 421 measured · Source: the US BTS Mar · 488 · 488 recorded · 481 measured · Source: the US BTS Apr · 478 · 478 recorded · 476 measured · Source: the US BTS May · 510 · 510 recorded · 506 measured · Source: the US BTS Jun · 532 · 532 recorded · 526 measured · Source: the US BTS Jul · 544 · 544 recorded · 541 measured · Source: the US BTS Aug · 304 · 304 recorded · 303 measured · Source: the US BTS Sep · 274 · 274 recorded · 274 measured · Source: the US BTS Oct · 400 · 400 recorded · 400 measured · Source: the US BTS Nov · 468 · 468 recorded · 454 measured · Source: the US BTS Dec · 494 · 494 recorded · 494 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan68.5%28.3 min483486
Feb74.4%27.2 min421436
Mar81.5%14.0 min481488
Apr77.9%17.4 min476478
May79.5%16.8 min506510
Jun75.3%22.4 min526532
Jul75.6%18.7 min541544
Aug70.0%29.3 min303304
Sep85.8%9.2 min274274
Oct87.5%6.6 min400400
Nov85.5%9.2 min454468
Dec76.9%24.6 min494494

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 77.2% 4,179
  • Delayed >15 min 21.8% 1,180
  • Cancelled 1.0% 55
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

21
21 of 21
Flight numbersBy direction DeparturesOn time
OO4694 BIS → DEN 654 83.7%
OO4738 BIS → DEN 653 85.0%
OO4710 BIS → DEN 626 77.0%
OO4663 DEN → BIS 621 84.8%
OO4799 DEN → BIS 618 77.9%
OO4665 DEN → BIS 615 67.6%
OO4664 DEN → BIS 531 77.0%
OO4642 BIS → DEN 436 62.9%
OO5441 DEN → BIS 88 89.7%
OO6024 BIS → DEN 73 74.0%
OO5690 BIS → DEN 54 92.6%
OO5832 DEN → BIS 53 84.9%
OO4734 DEN → BIS 36 63.9%
OO5229 DEN → BIS 35 77.1%
OO5289 DEN → BIS 35 85.7%
OO5380 BIS → DEN 35 88.2%
OO4650 BIS → DEN 32 62.5%
OO4656 BIS → DEN 31 87.1%
OO4786 DEN → BIS 31 93.6%
OO5559 BIS → DEN 31 61.3%
OO5735 BIS → DEN 31 87.1%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 236 −22.6% 0 74.2%
June 2026 232 −21.1% 0 81.0%
May 2026 242 −8.3% 0 84.3%
April 2026 238 +0.0% 0 81.1%
March 2026 233 −6.0% 7 81.1%
February 2026 210 −0.5% 2 81.0%
January 2026 236 −4.5% 2 72.9%
December 2025 244 −2.4% 0 68.9%
November 2025 226 −0.9% 6 92.0%
October 2025 240 +50.0% 0 84.2%
September 2025 274 0 85.8%
August 2025 303 1 70.0%
July 2025 305 3 76.7%
June 2025 294 6 70.7%
May 2025 264 4 75.0%
April 2025 238 2 74.8%
March 2025 248 0 81.9%
February 2025 211 13 67.8%
January 2025 247 1 64.4%
December 2024 250 0 84.8%
November 2024 228 8 78.9%
October 2024 160 0 92.5%

How to read this chart

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