Best Time to Fly MIA to DCA: On-Time Stats by Hour & Airline
Miami International → Ronald Reagan Washington National
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.2% of Miami (MIA) to Washington (DCA) flights arrived on time (3,956 scheduled flights). That is 2.4 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 76.9%, while Republic Airways trailed at 68.2%.
October has been the best month (81% on time) and Sunday the weakest day of the week (71%).
1.8% of flights were cancelled, versus 1.8% nationally.
MIA to DCA 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 |
|---|---|---|---|---|
| Delta Air Lines | 76.9% | 78 min | 1.1% | 363 |
| American Airlines | 75.2% | 67 min | 1.9% | 3,548 |
| Republic Airways | 68.2% | 80 min | 0.0% | 44 |
| Envoy Air | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to DCA
On-time arrival % by scheduled departure hour (local time), 7,997 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 26 | |
| 6am–7am | 88.9% | 1.2% | 677 |
| 7am–8am | 93.0% | 0.0% | 101 |
| 8am–9am | 88.7% | 0.8% | 606 |
| 9am–10am | 83.5% | 1.2% | 516 |
| 10am–11am | 86.1% | 0.9% | 452 |
| 11am–12pm | 77.5% | 1.4% | 1,011 |
| 12pm–1pm | 85.7% | 1.0% | 306 |
| 1pm–2pm | 67.2% | 1.1% | 351 |
| 2pm–3pm | 68.1% | 2.1% | 380 |
| 3pm–4pm | 58.9% | 2.9% | 274 |
| 4pm–5pm | 68.1% | 1.4% | 440 |
| 5pm–6pm | 66.3% | 3.9% | 595 |
| 6pm–7pm | 57.0% | 3.7% | 381 |
| 7pm–8pm | 59.8% | 3.6% | 448 |
| 8pm–9pm | 70.7% | 3.2% | 695 |
| 9pm–10pm | 75.6% | 3.9% | 649 |
| 10pm–11pm | 69.4% | 4.5% | 89 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to DCA
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) | 75.5% | -2.0 pts | 0.0% | 143 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.4% | -3.1 pts | 0.3% | 341 |
| Summer peak (Jun 15 - Aug 15) | 63.9% | -13.6 pts | 4.6% | 1,333 |
| All other days | 77.5% | — | 1.8% | 6,180 |
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).