Route · IAD → MIA · 2020–2025 BTS data
Washington to Miami
The IAD–MIA corridor (Washington, DC → Miami, FL) runs ahead of the national average, served by 9 carriers across roughly 921 miles.
Data updated 2026-06-13
- 81.7%
- On-time
- +2.7 pts
- vs US avg
- 75 min
- Delay when late
- 3,028
- Flights
Cancelled
1.0%
Best Month
Nov 2024 93%
Worst Month
Mar 2024 65%
Distance
921 mi
Carriers
9
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 58 | 11 | 0 | 0 | F9,UA |
| Nov 2025 | 44 | 11 | 0 | 0 | UA,F9 |
| Oct 2025 | 49 | 6 | 0 | 0 | UA,F9 |
| Sep 2025 | 47 | 3 | 0 | 0 | UA,F9 |
| Aug 2025 | 53 | 13 | 0 | 0 | F9,UA |
| Jul 2025 | 52 | 18 | 2 | 0 | UA,F9 |
| Jun 2025 | 52 | 18 | 0 | 0 | UA,F9 |
| May 2025 | 41 | 8 | 0 | 0 | UA,F9 |
| Apr 2025 | 30 | 1 | 0 | 0 | UA |
| Mar 2025 | 60 | 7 | 0 | 0 | UA |
| Feb 2025 | 52 | 10 | 0 | 0 | UA |
| Jan 2025 | 54 | 16 | 1 | 0 | UA |
| Dec 2024 | 62 | 15 | 0 | 0 | UA |
| Nov 2024 | 60 | 4 | 0 | 0 | UA |
| Oct 2024 | 37 | 1 | 0 | 0 | UA |
| Sep 2024 | 30 | 3 | 0 | 0 | UA |
| Aug 2024 | 31 | 3 | 1 | 0 | UA |
| Jul 2024 | 31 | 7 | 0 | 0 | UA |
| Jun 2024 | 30 | 2 | 2 | 0 | UA |
| May 2024 | 53 | 10 | 0 | 0 | UA |
| Apr 2024 | 60 | 12 | 1 | 0 | UA |
| Mar 2024 | 62 | 22 | 0 | 0 | UA |
| Feb 2024 | 58 | 14 | 0 | 0 | UA |
| Jan 2024 | 62 | 17 | 5 | 0 | UA |
Cancellation Rate
1.0%
12 of 1,168 flights
Diversion Rate
0.0%
0 of 1,168 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.
Origin airport →MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
Destination airport →Compare the two airports
See IAD and MIA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAD–MIA.
Routes with a similar on-time rate
What the Data Says About IAD to MIA
3,028 tracked flights put the IAD to MIA pairing (Washington to Miami) at a 81.7% on-time rate, squarely in line with the wider network. Delays that do occur run 75.2 minutes on average. Across the 921-mile route and its 9 carriers, the trailing 24 months show 1.0% cancelled and 0.0% diverted (1,168 flights sampled).
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 93% on-time, while Mar 2024 came in at just 65% - a 29-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.
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.