Best Time to Fly PWM to DCA: On-Time Stats by Hour & Airline
Portland International Jetport → Ronald Reagan Washington National
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.6% of Portland (PWM) to Washington (DCA) flights arrived on time (1,159 scheduled flights). That is 3.0 points below the national average of 77.6%.
Republic Airways was the most punctual of the 3 airlines on the route at 83.0%, while PSA Airlines trailed at 70.1%.
November has been the best month (84% on time) and Sunday the weakest day of the week (71%).
3.7% of flights were cancelled, versus 1.8% nationally.
PWM 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 |
|---|---|---|---|---|
| Republic Airways | 83.0% | 77 min | 8.3% | 96 |
| American Airlines | 76.1% | 108 min | 1.4% | 656 |
| PSA Airlines | 70.1% | 103 min | 6.4% | 407 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PWM to DCA
On-time arrival % by scheduled departure hour (local time), 2,480 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 88.7% | 5.7% | 489 |
| 6am–7am | 85.5% | 1.3% | 238 |
| 8am–9am | Limited data | 1 | |
| 9am–10am | Limited data | 11 | |
| 10am–11am | 76.2% | 5.6% | 107 |
| 11am–12pm | 81.4% | 3.3% | 61 |
| 12pm–1pm | 75.4% | 1.6% | 557 |
| 1pm–2pm | 87.6% | 1.1% | 90 |
| 2pm–3pm | 57.9% | 5.8% | 242 |
| 4pm–5pm | 43.3% | 11.4% | 35 |
| 5pm–6pm | 66.0% | 4.8% | 649 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PWM 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) | 81.4% | +6.1 pts | 0.0% | 43 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.6% | +9.3 pts | 2.1% | 93 |
| Summer peak (Jun 15 - Aug 15) | 70.8% | -4.5 pts | 6.6% | 378 |
| All other days | 75.3% | — | 3.7% | 1,966 |
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).