Route · IAD → CMH · 2020–2025 BTS data
Washington to Columbus
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAD to CMH (Washington to Columbus) ranks #2715 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.2%
- On-time
- +5.2 pts
- vs US avg
- 78 min
- Delay when late
- 4,435
- Flights
- #2715 of 4927
- Corpus placement
Cancelled
1.2%
Best Month
Oct 2024 95%
Worst Month
Jun 2025 64%
Distance
299 mi
Carriers
11
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 75 | 12 | 0 | 0 | YX,UA |
| Nov 2025 | 60 | 4 | 2 | 0 | UA,YX |
| Oct 2025 | 97 | 14 | 0 | 0 | UA,YX |
| Sep 2025 | 136 | 24 | 0 | 0 | UA,YX |
| Aug 2025 | 109 | 15 | 0 | 0 | YX,UA |
| Jul 2025 | 85 | 27 | 6 | 0 | YX |
| Jun 2025 | 113 | 41 | 1 | 1 | UA,YX |
| May 2025 | 129 | 31 | 1 | 0 | UA,YX |
| Apr 2025 | 141 | 18 | 0 | 0 | YX |
| Mar 2025 | 63 | 11 | 0 | 0 | YX |
| Feb 2025 | 42 | 7 | 0 | 0 | YX |
| Jan 2025 | 51 | 6 | 1 | 0 | YX |
| Dec 2024 | 60 | 8 | 0 | 0 | UA,YX |
| Nov 2024 | 59 | 10 | 0 | 0 | YX |
| Oct 2024 | 75 | 4 | 1 | 0 | UA,YX |
| Sep 2024 | 62 | 9 | 0 | 0 | YX,UA |
| Aug 2024 | 80 | 22 | 7 | 0 | YX |
| Jul 2024 | 106 | 15 | 3 | 0 | YX |
| Jun 2024 | 60 | 13 | 0 | 0 | YX |
| May 2024 | 41 | 10 | 0 | 0 | YX |
| Apr 2024 | 56 | 4 | 0 | 0 | YX |
| Mar 2024 | 58 | 5 | 0 | 0 | YX |
| Feb 2024 | 58 | 5 | 0 | 0 | YX |
| Jan 2024 | 70 | 11 | 0 | 0 | YX |
IAD–CMH seasonal on-time pattern
Best: October (89.2%) · weakest: June (74.3%)
Strongest calendar month
October
89.2% on-time · ~71 flights/mo
Busiest calendar month
April
~84 flights/mo avg
Weakest calendar month
June
74.3% on-time · ~62 flights/mo
Cancellation Rate
1.2%
22 of 1,886 flights
Diversion Rate
0.1%
1 of 1,886 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 profileCMH - Columbus
Full on-time, delay-cause, and seasonal performance for Columbus, OH.
CMH on-time profileCompare the two airports
See IAD and CMH side by side on delays, cancellations, and reliability.
Compare IAD vs CMHOrigin-hub reliability standing
Mid-pack among IAD departures
From IAD, this corridor sits with 42 other 75–85% on-time routes out of 58 tracked departures, not the hub's reliability leaders (14 at ≥85%) and not the softest ( 2 below 75%). Destination: Columbus · fleet on-time rank #1512 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAD–CMH.
Routes with a similar on-time rate
What the Data Says About IAD to CMH
Bureau of Transportation Statistics records show Washington to Columbus (IAD to CMH) running a 84.2% on-time rate over 4,435 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 78.2 minutes. The 299-mile corridor is served by 11 carriers, and over the last 24 months 1.2% of 1,886 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 95% on-time, while Jun 2025 came in at just 64% - a 31-point swing worth factoring into travel timing.
On the multi-year calendar, IAD–CMH peaks in October at 89.2% on-time while April carries the heaviest traffic (~84 flights per month) ; the softest month is June at 74.3%, a 14.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does IAD to CMH rank among US routes by traffic? ▼
How often are flights delayed from IAD to CMH? ▼
What is the cancellation rate for IAD to CMH? ▼
How far is the flight from IAD to CMH? ▼
When is the best time to fly from IAD to CMH? ▼
Airports on this route
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–CMH data
IAD–CMH runs 5.2 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 CMH airport profiles: delay causes and top routes differ even on the same corridor. IAD airport
- If your dates flex, October (89.2% on-time) beats June (74.3%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.2% 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.
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.