Carrier route record

AADCA→LAX

American Airlines · Washington to Los Angeles

Flights: 730
Period: July 2025 to June 2026
Share of route: 50%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.

American on DCA to LAX lands a B, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 730 flights, with a median arrival 7 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate American on DCA to LAX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

77.8%

Arrivals under 15 minutes late, of 707 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

1.23%

National rate is 1.81%

Whole route

74.2%

Every carrier on DCA to LAX, 1,457 flights

These figures cover 730 flights between July 2025 and June 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Carrier by carrier

American against every carrier on DCA to LAX

American flew 730 of the 1,457 flights on DCA to LAX, most of the route. Its 77.8% on time is 4 points better than the route as a whole, which runs 74.2%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from American at 77.8% to Alaska at 66.5%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on DCA to LAX
Airline	Flights	On time	Avg delay	Cancelled	Grade
American Airlines (this page)	730	77.8%	72 min	1.23%	B
Delta Air Linesthin sample	363	74.9%	120 min	2.20%	C
Alaska Airlinesthin sample	364	66.5%	59 min	1.10%	C

Flight by flight

American flight numbers on DCA to LAX

AA 196608:2082.9% · 365 flights

Departure window

When American runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 11 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am—
8am–11am365 flights82.9%
11am–2pm—
2pm–5pm18 flights—
5pm–8pm347 flights72.1%
8pm–5am—

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 82.9% of the time, against 72.1% for the evening window. That is 11 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 365 flights scheduled in it.

Across the year

American on DCA to LAX through the year

Darker means more delays. Figures are on-time percentages.March best, June worst

June is the worst month at 65.5% on time, 17 points below March, the best at 82.3%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 62 flights.

Across the week, Monday is the strongest day at 83.8% on time and Wednesday the weakest at 74.3%. 10 points is a smaller lever than departure hour, but it is free.

Delay causes

Why American runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 11,000 reported delay minutes.

Late-arriving aircraft
35%
Carrier
31%
National Airspace System
26%
Extreme weather
8%
Security
0%

35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 11,000 reported delay minutes here, that single category outweighs weather by 4 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 11,306 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 82.9% on time here.

Cancellations sit at 1.23% against a national 1.81%, which is ordinary. Diversions add another 1.92%.

Connections and stage length

What a delay here costs

6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

At 2,311 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 82.0% on time across 730 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.

One caution: this is a thin sample. 730 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking American on DCA to LAX

Put together: treat all of this as provisional. 730 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 77.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 707 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures