Route · MIA → IAD · 2020–2025 BTS data
Miami to Washington
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MIA to IAD (Miami to Washington) ranks #3272 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 83.2%
- On-time
- +4.2 pts
- vs US avg
- 95 min
- Delay when late
- 3,061
- Flights
- #3272 of 4927
- Corpus placement
Cancelled
1.0%
Best Month
Nov 2024 98%
Worst Month
Jun 2025 60%
Distance
921 mi
Carriers
8
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 58 | 7 | 0 | 0 | F9,UA |
| Nov 2025 | 44 | 12 | 0 | 0 | UA,F9 |
| Oct 2025 | 49 | 7 | 0 | 0 | UA,F9 |
| Sep 2025 | 47 | 3 | 0 | 0 | UA,F9 |
| Aug 2025 | 53 | 17 | 0 | 0 | F9,UA |
| Jul 2025 | 52 | 18 | 2 | 0 | UA,F9 |
| Jun 2025 | 52 | 21 | 0 | 0 | UA,F9 |
| May 2025 | 41 | 6 | 0 | 0 | UA,F9 |
| Apr 2025 | 30 | 2 | 0 | 0 | UA |
| Mar 2025 | 61 | 9 | 0 | 0 | UA |
| Feb 2025 | 52 | 8 | 1 | 0 | UA |
| Jan 2025 | 54 | 11 | 1 | 0 | UA |
| Dec 2024 | 62 | 12 | 0 | 1 | UA |
| Nov 2024 | 60 | 1 | 0 | 0 | UA |
| Oct 2024 | 36 | 1 | 0 | 0 | UA |
| Sep 2024 | 30 | 1 | 0 | 0 | UA |
| Aug 2024 | 31 | 11 | 0 | 2 | UA |
| Jul 2024 | 31 | 9 | 0 | 0 | UA |
| Jun 2024 | 30 | 7 | 2 | 0 | UA |
| May 2024 | 54 | 3 | 0 | 0 | UA |
| Apr 2024 | 60 | 12 | 1 | 0 | UA |
| Mar 2024 | 62 | 17 | 0 | 0 | UA |
| Feb 2024 | 58 | 12 | 0 | 0 | UA |
| Jan 2024 | 62 | 12 | 5 | 0 | UA |
MIA–IAD seasonal on-time pattern
Best: October (91.6%) · weakest: June (68.6%)
Strongest calendar month
October
91.6% on-time · ~44 flights/mo
Busiest calendar month
March
~60 flights/mo avg
Weakest calendar month
June
68.6% on-time · ~43 flights/mo
Cancellation Rate
1.0%
12 of 1,169 flights
Diversion Rate
0.3%
3 of 1,169 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
MIA on-time profileIAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
IAD on-time profileCompare the two airports
See MIA and IAD side by side on delays, cancellations, and reliability.
Compare MIA vs IADOrigin-hub reliability standing
Mid-pack among MIA departures
From MIA, this corridor sits with 37 other 75–85% on-time routes out of 63 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 25 below 75%). Destination: Washington · fleet on-time rank #1879 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to MIA–IAD.
Routes with a similar on-time rate
What the Data Says About MIA to IAD
Bureau of Transportation Statistics records show Miami to Washington (MIA to IAD) running a 83.2% on-time rate over 3,061 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 95.3 minutes. The 921-mile corridor is served by 8 carriers, and over the last 24 months 1.0% of 1,169 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 98% on-time, while Jun 2025 came in at just 60% - a 39-point swing worth factoring into travel timing.
On the multi-year calendar, MIA–IAD peaks in October at 91.6% on-time while March carries the heaviest traffic (~60 flights per month) ; the softest month is June at 68.6%, a 23.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does MIA to IAD rank among US routes by traffic? ▼
How often are flights delayed from MIA to IAD? ▼
What is the cancellation rate for MIA to IAD? ▼
How far is the flight from MIA to IAD? ▼
When is the best time to fly from MIA to IAD? ▼
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 MIA–IAD data
MIA–IAD runs 4.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare MIA and IAD airport profiles: delay causes and top routes differ even on the same corridor. MIA airport
- If your dates flex, October (91.6% on-time) beats June (68.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 83.2% 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.