Best Time to Fly LAS to DCA: On-Time Stats by Hour & Airline
Harry Reid International → Ronald Reagan Washington National
Data through July 2026 · Last updated October 18, 2026
728 flights were scheduled from Las Vegas (LAS) to Washington (DCA) in the last 12 months, and 75.3% of those that flew arrived on time, 2.3 points below the US average of 77.6%.
Among 2 airlines, American Airlines led with 78.7% on time and Southwest Airlines was last with 71.9%.
Over 24 months, Saturday was the most reliable day (87% on time) and July the worst month (58%).
The cancellation rate was 1.0% (US average 1.8%).
LAS 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 |
|---|---|---|---|---|
| American Airlines | 78.7% | 81 min | 1.4% | 364 |
| Southwest Airlines | 71.9% | 41 min | 0.6% | 364 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to DCA
On-time arrival % by scheduled departure hour (local time), 1,253 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 7am–8am | Limited data | 3 | |
| 8am–9am | 77.7% | 0.0% | 183 |
| 9am–10am | 64.1% | 0.7% | 309 |
| 10am–11am | 94.7% | 0.0% | 39 |
| 11am–12pm | 79.4% | 0.0% | 137 |
| 12pm–1pm | 80.7% | 0.7% | 417 |
| 1pm–2pm | 80.6% | 2.4% | 164 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS 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) | Limited data | 21 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 91.1% | +13.3 pts | 0.0% | 45 |
| Summer peak (Jun 15 - Aug 15) | 67.0% | -10.9 pts | 0.0% | 231 |
| All other days | 77.8% | — | 0.9% | 956 |
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).