Miami (MIA) to Washington (DCA): On-Time Performance
Data through May 2026
The calendar drives reliability on MIA–DCA. November 2024 flights landed on schedule 84% of the time, but July 2025 dropped to 58% — a gap of 27 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 66%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 2.2%
- Flights/day
- 11
- last 12 months
- Duration
- 2h 38m
- scheduled
- Distance
- 919 mi
Best airline from MIA to DCA
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 80% | 17 min | 0.8% | 729 |
| Republic Airways | 74% | 18 min | 0.0% | 89 |
| American Airlines | 74% | 19 min | 2.4% | 7,140 |
Monthly on-time trend
Best time to fly from MIA to DCA
Aim for departures around 7 a.m. (92% on-time); avoid 3 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 20 min |
| Tuesdaybest | 79% | 15 min |
| Wednesday | 77% | 15 min |
| Thursday | 73% | 21 min |
| Friday | 71% | 21 min |
| Saturday | 77% | 16 min |
| Sunday | 70% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft44%
- Airline operations32%
- National airspace system18%
- Weather6%
Frequently asked questions
- How often are flights from MIA to DCA delayed?
- 26% of MIA–DCA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from MIA to DCA?
- Delta Air Lines has the best on-time record on this route at 80%, based on 729 flights. 3 airlines flew MIA–DCA frequently enough to compare in this period.
- What is the best time of day to fly from MIA to DCA?
- Departures around 7 a.m. have the best record (92% on-time), while departures around 3 p.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to DCA?
- The scheduled MIA–DCA flight time averages 2h 38m over 919 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are MIA to DCA flights cancelled?
- 2.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from MIA to DCA?
- July 2025 was the roughest month in this dataset, with only 58% of arrivals on time. The best was November 2024 at 84%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 7,959 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.