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Route · IAD → IND · 2020–2025 BTS data

Washington to Indianapolis

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAD to IND (Washington to Indianapolis) ranks #2190 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.8%
On-time
+7.8 pts
vs US avg
73 min
Delay when late
5,729
Flights
#2190 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Feb 2024 98%

Worst Month

Jul 2025 75%

Distance

476 mi

Carriers

10

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 62 14 1 0 YX
Nov 2025 87 14 1 0 YX
Oct 2025 86 12 0 0 UA,YX
Sep 2025 89 11 0 0 UA,YX
Aug 2025 93 17 0 0 YX
Jul 2025 92 23 3 1 YX
Jun 2025 115 27 1 0 YX
May 2025 102 15 0 0 YX
Apr 2025 116 17 0 0 YX
Mar 2025 94 11 0 0 YX
Feb 2025 84 20 1 0 YX
Jan 2025 99 17 7 0 YX
Dec 2024 109 14 0 0 YX
Nov 2024 107 7 0 0 YX
Oct 2024 122 5 0 0 YX
Sep 2024 120 8 0 0 YX
Aug 2024 124 27 6 0 YX
Jul 2024 123 26 3 1 YX
Jun 2024 119 16 2 0 YX
May 2024 102 10 0 0 YX
Apr 2024 90 4 0 0 YX
Mar 2024 92 6 0 0 YX
Feb 2024 85 2 0 0 YX
Jan 2024 92 20 0 0 YX

IAD–IND seasonal on-time pattern

Best: September (92.6%) · weakest: July (80.4%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 89.4%

Strongest calendar month

September

92.6% on-time · ~95 flights/mo

Busiest calendar month

August

~103 flights/mo avg

Weakest calendar month

July

80.4% on-time · ~101 flights/mo

Cancellation Rate

1.0%

25 of 2,404 flights

Diversion Rate

0.1%

2 of 2,404 flights

Explore origin & destination

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

IAD - Washington

Full on-time, delay-cause, and seasonal performance for Washington, DC.

IAD on-time profile

IND - Indianapolis

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

IND on-time profile

Compare the two airports

See IAD and IND side by side on delays, cancellations, and reliability.

Compare IAD vs IND

Origin-hub reliability standing

Among IAD's stronger departures

IAD → IND posts a 86.8% on-time rate, landing in the ≥85% band with 14 of 58 BTS-tracked routes leaving Washington. The same hub also shows 42 mid-band and 2 challenged departures · fleet-wide on-time rank #674 of 4927 (highest on-time = #1).

What the Data Says About IAD to IND

Washington to Indianapolis (IAD to IND) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.8% on-time rate across 5,729 flights, with delays that do happen averaging 72.5 minutes. The corridor runs roughly 476 miles and is served by 10 carriers. Over the most recent 24 months, 25 of 2,404 flights were cancelled (1.0%) and 2 diverted (0.1%).

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 98% on-time, while Jul 2025 came in at just 75% - a 23-point swing worth factoring into travel timing.

On the multi-year calendar, IAD–IND peaks in September at 92.6% on-time while August carries the heaviest traffic (~103 flights per month) ; the softest month is July at 80.4%, a 12.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAD to IND rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAD to IND ranks #2190 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 IAD to IND? ▼
Flights from Washington to Indianapolis have a 86.8% on-time rate based on 5,729 flights. The average delay is 72.5 minutes. The best recent month was Feb 2024 with 98% on-time.
What is the cancellation rate for IAD to IND? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (25 of 2,404 flights) and 0.1% were diverted.
How far is the flight from IAD to IND? ▼
The flight distance from Washington (IAD) to Indianapolis (IND) is approximately 476 miles. This route is served by 10 carriers.
When is the best time to fly from IAD to IND? ▼
The best recent month for on-time performance was Feb 2024 (98% on-time). The worst was Jul 2025 (75% on-time). Consider booking during months with historically better performance.

Airports on this route

IAD Airport

Washington
IND Airport

Indianapolis
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 IAD–IND data

IAD–IND runs 7.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare IAD and IND airport profiles: delay causes and top routes differ even on the same corridor. IAD airport
  • If your dates flex, September (92.6% on-time) beats July (80.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.8% 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.