Best Time to Fly DCA to MIA: On-Time Stats by Hour & Airline
Ronald Reagan Washington National → Miami International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.6% of Washington (DCA) to Miami (MIA) flights arrived on time (3,955 scheduled flights). That is 1.0 points below the national average of 77.6%.
Among 3 airlines, American Airlines led with 77.7% on time and Republic Airways was last with 54.5%.
Over 24 months, Tuesday was the most reliable day (82% on time) and August the worst month (67%).
The cancellation rate was 1.9% (US average 1.8%).
DCA to MIA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 77.7% | 76 min | 1.9% | 3,547 |
| Delta Air Lines | 68.4% | 77 min | 1.6% | 363 |
| Republic Airways | 54.5% | 83 min | 0.0% | 44 |
| Envoy Air | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DCA to MIA
On-time arrival % by scheduled departure hour (local time), 7,994 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.7% | 3.1% | 860 |
| 6am–7am | 92.7% | 1.8% | 773 |
| 7am–8am | 89.8% | 2.4% | 464 |
| 8am–9am | 81.0% | 1.2% | 568 |
| 9am–10am | 85.3% | 1.6% | 311 |
| 10am–11am | 83.1% | 1.6% | 256 |
| 11am–12pm | 78.0% | 1.7% | 656 |
| 12pm–1pm | Limited data | 5 | |
| 1pm–2pm | 73.3% | 1.1% | 694 |
| 2pm–3pm | 71.2% | 1.6% | 732 |
| 3pm–4pm | 65.4% | 1.6% | 374 |
| 4pm–5pm | 68.9% | 2.0% | 296 |
| 5pm–6pm | 64.7% | 2.3% | 725 |
| 6pm–7pm | 64.0% | 2.4% | 450 |
| 7pm–8pm | 62.8% | 5.5% | 330 |
| 8pm–9pm | 69.4% | 3.6% | 496 |
| 9pm–10pm | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DCA to MIA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 84.6% | +5.7 pts | 0.0% | 143 |
| Christmas & New Year (Dec 20 - Jan 3) | 79.8% | +0.9 pts | 0.0% | 342 |
| Summer peak (Jun 15 - Aug 15) | 68.5% | -10.4 pts | 4.7% | 1,330 |
| All other days | 78.9% | — | 1.8% | 6,179 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).