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Route · IAD → MCI · 2020–2025 BTS data

Washington to Kansas City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAD to MCI (Washington to Kansas City) ranks #4381 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

85.4%
On-time
+6.4 pts
vs US avg
128 min
Delay when late
1,159
Flights
#4381 of 4927
Corpus placement

Cancelled

2.0%

Best Month

Sep 2021 95%

Worst Month

Aug 2021 71%

Distance

926 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2022 32 2 0 1 YV
Nov 2022 30 5 0 0 YV
Oct 2022 30 2 0 0 YX,YV
Aug 2022 31 7 3 0 YV
Jul 2022 31 9 2 0 YV
Jun 2022 30 4 2 1 YV
May 2022 31 6 1 0 YV
Apr 2022 30 2 0 0 YV
Mar 2022 34 4 0 0 YV,YX
Jan 2022 32 5 6 0 YV
Dec 2021 55 14 2 0 YV
Nov 2021 57 5 0 0 YV
Oct 2021 61 14 1 0 YV
Sep 2021 60 3 0 0 YV,YX
Aug 2021 62 18 0 0 YV
Jul 2021 62 14 0 0 YV
Jun 2021 60 9 0 0 YV,YX
May 2021 55 7 0 0 YV,YX
Apr 2021 30 3 0 0 YX
Mar 2021 31 2 0 0 YX
Jan 2021 35 3 1 0 YV,YX
Dec 2020 45 7 2 0 YV,YX
Sep 2020 30 2 0 0 YV,YX
Aug 2020 31 4 0 0 YV

IAD–MCI seasonal on-time pattern

Best: February (94.4%) · weakest: July (75.3%)

70%75%80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 82.6%

Strongest calendar month

February

94.4% on-time · ~54 flights/mo

Busiest calendar month

February

~54 flights/mo avg

Weakest calendar month

July

75.3% on-time · ~47 flights/mo

Cancellation Rate

2.0%

20 of 985 flights

Diversion Rate

0.2%

2 of 985 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

MCI - Kansas City

Full on-time, delay-cause, and seasonal performance for Kansas City, MO.

MCI on-time profile

Compare the two airports

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

Compare IAD vs MCI

Origin-hub reliability standing

Among IAD's stronger departures

IAD → MCI posts a 85.4% 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 #1088 of 4927 (highest on-time = #1).

What the Data Says About IAD to MCI

Washington to Kansas City (IAD to MCI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.4% on-time rate across 1,159 flights, with delays that do happen averaging 127.9 minutes. The corridor runs roughly 926 miles and is served by 7 carriers. Over the most recent 24 months, 20 of 985 flights were cancelled (2.0%) and 2 diverted (0.2%).

The monthly split is wide on this route: Sep 2021 posted the strongest performance at 95% on-time, while Aug 2021 came in at just 71% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, IAD–MCI peaks in February at 94.4% on-time ; the softest month is July at 75.3%, a 19.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAD to MCI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAD to MCI ranks #4381 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 MCI? ▼
Flights from Washington to Kansas City have a 85.4% on-time rate based on 1,159 flights. The average delay is 127.9 minutes. The best recent month was Sep 2021 with 95% on-time.
What is the cancellation rate for IAD to MCI? ▼
Over the last 24 months, 2.0% of flights on this route were cancelled (20 of 985 flights) and 0.2% were diverted.
How far is the flight from IAD to MCI? ▼
The flight distance from Washington (IAD) to Kansas City (MCI) is approximately 926 miles. This route is served by 7 carriers.
When is the best time to fly from IAD to MCI? ▼
The best recent month for on-time performance was Sep 2021 (95% on-time). The worst was Aug 2021 (71% on-time). Consider booking during months with historically better performance.

Airports on this route

IAD Airport

Washington
MCI Airport

Kansas City
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–MCI data

IAD–MCI runs 6.4 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 MCI airport profiles: delay causes and top routes differ even on the same corridor. IAD airport
  • If your dates flex, February (94.4% on-time) beats July (75.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 85.4% 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.