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Route · IND → DEN · 2020–2025 BTS data

Indianapolis to Denver

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IND to DEN (Indianapolis to Denver) ranks #710 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.6%
On-time
+3.6 pts
vs US avg
63 min
Delay when late
13,908
Flights
#710 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Sep 2024 93%

Worst Month

Dec 2025 63%

Distance

977 mi

Carriers

21

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 189 70 1 1 WN,F9,UA
Nov 2025 191 30 5 0 UA,F9,WN
Oct 2025 226 52 0 0 UA,WN,F9
Sep 2025 213 38 0 0 UA,WN,F9
Aug 2025 242 50 2 1 WN,F9,UA
Jul 2025 288 80 2 2 UA,WN,F9
Jun 2025 253 67 0 3 UA,WN,F9
May 2025 216 47 2 0 UA,WN,F9
Apr 2025 189 49 1 1 F9,UA,WN
Mar 2025 197 35 0 0 UA,WN,F9
Feb 2025 159 39 1 0 UA,WN,F9
Jan 2025 174 42 4 0 UA,WN,F9
Dec 2024 192 30 0 0 F9,UA,WN
Nov 2024 208 35 0 0 UA,WN,F9
Oct 2024 231 22 0 1 UA,WN,F9
Sep 2024 221 15 0 1 WN,UA,F9
Aug 2024 232 47 2 1 F9,WN,UA
Jul 2024 264 60 4 2 F9,UA,WN
Jun 2024 259 56 1 3 F9,UA,WN
May 2024 251 57 2 2 F9,UA,WN
Apr 2024 219 33 1 0 F9,UA,WN
Mar 2024 209 30 5 1 F9,UA,WN
Feb 2024 181 25 0 1 F9,UA,WN
Jan 2024 200 37 5 0 F9,WN,UA

IND–DEN seasonal on-time pattern

Best: September (87.9%) · weakest: July (76.0%)

75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 80.4%

Strongest calendar month

September

87.9% on-time · ~205 flights/mo

Busiest calendar month

July

~230 flights/mo avg

Weakest calendar month

July

76.0% on-time · ~230 flights/mo

Cancellation Rate

0.7%

38 of 5,204 flights

Diversion Rate

0.4%

20 of 5,204 flights

Explore origin & destination

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

IND - Indianapolis

Full on-time, delay-cause, and seasonal performance for Indianapolis, IN.

IND 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 IND and DEN side by side on delays, cancellations, and reliability.

Compare IND vs DEN

Origin-hub reliability standing

Mid-pack among IND departures

From IND, this corridor sits with 20 other 75–85% on-time routes out of 32 tracked departures, not the hub's reliability leaders (12 at ≥85%) and not the softest ( 0 below 75%). Destination: Denver · fleet on-time rank #2108 of 4927.

What the Data Says About IND to DEN

Bureau of Transportation Statistics records show Indianapolis to Denver (IND to DEN) running a 82.6% on-time rate over 13,908 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 63.4 minutes. The 977-mile corridor is served by 21 carriers, and over the last 24 months 0.7% of 5,204 flights were cancelled, 0.4% diverted.

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 93% on-time, while Dec 2025 came in at just 63% - a 30-point swing worth factoring into travel timing.

On the multi-year calendar, IND–DEN peaks in September at 87.9% on-time while July carries the heaviest traffic (~230 flights per month) ; the softest month is July at 76.0%, a 11.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IND to DEN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IND to DEN ranks #710 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 IND to DEN? ▼
Flights from Indianapolis to Denver have a 82.6% on-time rate based on 13,908 flights. The average delay is 63.4 minutes. The best recent month was Sep 2024 with 93% on-time.
What is the cancellation rate for IND to DEN? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (38 of 5,204 flights) and 0.4% were diverted.
How far is the flight from IND to DEN? ▼
The flight distance from Indianapolis (IND) to Denver (DEN) is approximately 977 miles. This route is served by 21 carriers.
When is the best time to fly from IND to DEN? ▼
The best recent month for on-time performance was Sep 2024 (93% on-time). The worst was Dec 2025 (63% on-time). Consider booking during months with historically better performance.

Airports on this route

IND Airport

Indianapolis
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 IND–DEN data

IND–DEN runs 3.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare IND and DEN airport profiles: delay causes and top routes differ even on the same corridor. IND airport
  • If your dates flex, September (87.9% on-time) beats July (76.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.6% 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.