Best Time to Fly DCA to SAN: On-Time Stats by Hour & Airline
Ronald Reagan Washington National → San Diego International
Data through July 2026 · Last updated October 18, 2026
364 flights were scheduled from Washington (DCA) to San Diego (SAN) in the last 12 months, and 71.3% of those that flew arrived on time, 6.4 points below the US average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
July has been the best month (81% on time) and Friday the weakest day of the week (64%).
1.6% of flights were cancelled, versus 1.8% nationally.
DCA to SAN 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 |
|---|---|---|---|---|
| Alaska Airlines | 71.3% | 50 min | 1.6% | 364 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DCA to SAN
On-time arrival % by scheduled departure hour (local time), 500 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 71.5% | 1.4% | 369 |
| 9am–10am | 64.6% | 0.8% | 131 |
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 SAN
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 | 6 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 15 | ||
| Summer peak (Jun 15 - Aug 15) | 76.8% | +10.2 pts | 0.9% | 109 |
| All other days | 66.7% | — | 1.4% | 370 |
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).