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736 km · Domestic

Denver (DEN) – Idaho Falls (IDA)

In July 2026, 306 flights operated between Denver and Idaho Falls (both directions), and 77.8% 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
January243259▲ 6.6%
February220221▲ 0.5%
March245241▼ 1.6%
April2382380.0%
May308268▼ 13.0%
June325300▼ 7.7%
July377306▼ 18.8%
August371––
September328––
October292–in progress
November283––
December273––
Year to date (Jan–Jul)1,9561,833▼ 6.3%

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
January72.8%84.9%▲ 16.6%
February76.8%85.5%▲ 11.3%
March88.2%77.6%▼ 12.0%
April79.4%83.6%▲ 5.3%
May76.3%82.5%▲ 8.1%
June68.6%79.7%▲ 16.2%
July68.2%77.8%▲ 14.1%
August72.8%––
September83.5%––
October89.4%–in progress
November90.8%––
December78.4%––
Year-to-date average (Jan–Jul)75.8%81.7%▲ 7.8%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January50▼ 100.0%
February41▼ 75.0%
March37▲ 133.3%
April20▼ 100.0%
May50▼ 100.0%
June30▼ 100.0%
July70▼ 100.0%
August9––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)298▼ 72.4%

Airlines on this route

  1. SkyWest Airlines 91.9%
  2. United Airlines 7.1%
  3. Allegiant Air 1.0%

Oct 1, 2024 – Jul 31, 2026

By direction

DEN → IDA

Scheduled flights
3,013
Flights operated
2,989
Cancelled
24 · 0.8%
On-time departures
79.3%

IDA → DEN

Scheduled flights
3,013
Flights operated
2,984
Cancelled
29 · 1.0%
On-time departures
80.7%

DEN → IDA and IDA → DEN counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 5,536 91.9% 80.5% 51
United Airlines UA 430 7.1% 75.8% 0
Allegiant Air G4 60 1.0% 62.1% 2

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 delay08:00–09:003.0min · 566 recorded · 564 measured
Gap to highest-delay hour26.7min08:00 ↔ 16:00
Recorded flights6,026DEN–IDA

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

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

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

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

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—44
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:0089.3%8.9 min214214
06:0090.8%5.7 min227229
07:0085.5%12.6 min524526
08:0089.5%3.0 min564566
09:00Fewer than 200 measured departures—44
10:0085.8%9.6 min649653
11:0080.8%9.7 min657657
12:00No observations———
13:0081.4%10.2 min436437
14:0078.8%16.0 min647649
15:0077.3%15.4 min401411
16:0066.0%29.6 min332334
17:0073.3%19.1 min404416
18:00Fewer than 200 measured departures—6368
19:0071.2%26.0 min646654
20:00No observations———
21:0071.1%21.6 min201204
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

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

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

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

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday81.7%13.4 min859865
Tuesday80.0%14.8 min830835
Wednesday80.3%13.2 min856858
Thursday77.8%14.0 min863878
Friday79.4%17.1 min840858
Saturday78.7%13.2 min829834
Sunday82.0%14.5 min896898

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

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

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

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

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan79.1%13.7 min502507
Feb81.2%15.0 min441446
Mar82.9%12.9 min486496
Apr81.5%12.2 min476478
May79.2%13.3 min576581
Jun73.9%21.2 min625628
Jul72.5%22.1 min683690
Aug72.8%17.0 min371380
Sep83.5%10.9 min328328
Oct86.7%9.1 min452452
Nov89.0%4.8 min510516
Dec82.0%14.3 min523524

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 79.3% 4,778
  • Delayed >15 min 19.8% 1,195
  • Cancelled 0.9% 53
  • 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

36
36 of 36
Flight numbersBy direction DeparturesOn time
OO4706 IDA → DEN 632 88.2%
OO5793 IDA → DEN 618 85.7%
OO5374 DEN → IDA 481 87.3%
OO5263 DEN → IDA 454 67.7%
OO5929 IDA → DEN 429 82.0%
OO5656 DEN → IDA 416 81.5%
OO5322 DEN → IDA 393 80.3%
OO5551 IDA → DEN 281 68.7%
OO5950 DEN → IDA 270 81.8%
OO5666 IDA → DEN 169 76.9%
OO5881 IDA → DEN 158 89.9%
OO5738 DEN → IDA 144 73.9%
UA2155 IDA → DEN 115 68.7%
OO5465 IDA → DEN 110 87.6%
UA2383 DEN → IDA 93 73.1%
OO5237 IDA → DEN 90 48.9%
OO5989 DEN → IDA 71 69.0%
UA1139 DEN → IDA 67 83.6%
OO5551 DEN → IDA 54 79.6%
UA549 IDA → DEN 45 68.9%
OO4722 IDA → DEN 37 67.6%
OO4747 DEN → IDA 37 94.6%
OO4757 DEN → IDA 36 80.6%
OO4788 DEN → IDA 36 86.1%
OO5891 DEN → IDA 36 83.3%
UA1723 IDA → DEN 36 88.9%
UA500 DEN → IDA 36 86.1%
OO4783 DEN → IDA 35 85.7%
OO4808 DEN → IDA 35 54.6%
OO5232 DEN → IDA 35 55.9%
OO5356 IDA → DEN 35 88.2%
OO5956 IDA → DEN 35 85.7%
OO5318 IDA → DEN 34 50.0%
OO4716 DEN → IDA 31 100.0%
OO5524 DEN → IDA 31 87.1%
G441561 DEN → IDA 30 70.0%

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 306 −18.8% 0 77.8%
June 2026 300 −7.7% 0 79.7%
May 2026 268 −13.0% 0 82.5%
April 2026 238 +0.0% 0 83.6%
March 2026 241 −1.6% 7 77.6%
February 2026 221 +0.5% 1 85.5%
January 2026 259 +6.6% 0 84.9%
December 2025 273 +9.2% 0 78.4%
November 2025 283 +24.7% 0 90.8%
October 2025 292 +82.5% 0 89.4%
September 2025 328 0 83.5%
August 2025 371 9 72.8%
July 2025 377 7 68.2%
June 2025 325 3 68.6%
May 2025 308 5 76.3%
April 2025 238 2 79.4%
March 2025 245 3 88.2%
February 2025 220 4 76.8%
January 2025 243 5 72.8%
December 2024 250 1 86.0%
November 2024 227 6 86.8%
October 2024 160 0 81.9%

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