Washington (DCA) to Los Angeles (LAX): On-Time Performance
Data through May 2026
Washington (DCA) to Los Angeles (LAX) effectively runs on two schedules. In October 2024, 92% of arrivals were on time; in July 2025 that fell to 56% — a 36-point seasonal swing. Across the full period the route averages 77% on-time against a national 78%.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 4.0
- last 12 months
- Duration
- 5h 48m
- scheduled
- Distance
- 2,311 mi
Best airline from DCA to LAX
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 79% | 14 min | 1.0% | 1,460 |
| Alaska Airlines | 76% | 16 min | 1.4% | 727 |
| Delta Air Lines | 75% | 29 min | 1.9% | 726 |
Monthly on-time trend
Best time to fly from DCA to LAX
Departure time makes little difference on this route — on-time rates stay within a few points across the day.
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 80% | 13 min |
| Tuesday | 77% | 19 min |
| Wednesday | 72% | 22 min |
| Thursday | 75% | 21 min |
| Friday | 76% | 16 min |
| Saturdaybest | 80% | 20 min |
| Sunday | 77% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft31%
- Airline operations35%
- National airspace system29%
- Weather6%
Frequently asked questions
- How often are flights from DCA to LAX delayed?
- 23% of DCA–LAX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from DCA to LAX?
- American Airlines has the best on-time record on this route at 79%, based on 1,460 flights. 3 airlines flew DCA–LAX frequently enough to compare in this period.
- What is the best time of day to fly from DCA to LAX?
- Departures around 8 a.m. have the best record (79% on-time), while departures around 9 a.m. have the worst (75%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DCA to LAX?
- The scheduled DCA–LAX flight time averages 5h 48m over 2,311 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are DCA to LAX flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from DCA to LAX?
- July 2025 was the roughest month in this dataset, with only 56% of arrivals on time. The best was October 2024 at 92%. If your dates are flexible, that 36-point gap is worth planning around.
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Based on 2,913 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.