Carrier route record
AASJU→DFW
American Airlines · San Juan to Dallas-Fort Worth
- Flights
- 703
- Period
- July 2025 to June 2026
- Share of route
- 71%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.
American on SJU to DFW lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 703 flights, with a median arrival 10 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate American on SJU to DFW from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.6%
Arrivals under 15 minutes late, of 682 completed flights
Avg delay
87 min
Across delayed arrivals only, not all flights
Cancelled
1.71%
National rate is 1.81%
Whole route
78.7%
Every carrier on SJU to DFW, 993 flights
These figures cover 703 flights between July 2025 and June 2026. The median arrival is 10 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 SJU to DFW
American flew 703 of the 993 flights on SJU to DFW, most of the route. Its 79.6% on time is about level with the route as a whole at 78.7%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from American at 79.6% to Frontier at 61.1%. 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines (this page) | 703 | 79.6% | 87 min | 1.71% | B |
| Spirit Airlinesthin sample | 252 | 78.8% | 77 min | 3.57% | B− |
| Frontier Airlinesthin sample | 38 | 61.1% | 68 min | 5.26% | D− |
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 14 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–8am275 flights84.0%
- 8am–11am—
- 11am–2pm—
- 2pm–5pm275 flights71.9%
- 5pm–8pm—
- 8pm–5am153 flights85.4%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is the strongest at 85.4% on time. The full set of windows spans 14 points.
Across the year
American on SJU to DFW through the year
August is the worst month at 52.9% on time, 38 points below March, the best at 91.2%. 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. April was the busiest month here, with 86 flights.
Across the week, Friday is the strongest day at 86.3% on time and Saturday the weakest at 69.7%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why American runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 12,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 46%Late-arriving aircraft
- 41%Carrier
- 10%National Airspace System
- 2%Extreme weather
46% 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 12,000 reported delay minutes here, that single category outweighs weather by 20 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 12,045 reported delay minutes.
The largest share of delay minutes, 41%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,930 of the 12,000 delay minutes reported here.
Cancellations sit at 1.71% against a national 1.81%, which is ordinary. Diversions add another 1.28%.
Connections and stage length
What a delay here costs
5.4% 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 an hour and a half, which a normal layover absorbs.
At 2,165 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 67.7% on time across 702 flights, 12 points below 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 12 points of difference.
One caution: this is a thin sample. 703 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 SJU to DFW
Put together: treat all of this as provisional. 703 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 79.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 682 completed flights over 12 months sit behind that.
Related
Where to go next
- SJU to DFW, every carrier
- American on DFW to SJU, the return leg
- Spirit Airlines on SJU to DFW78.8%
- American Airlines network-wide record
- Luis Munoz Marin International (SJU) delay statistics
- Dallas/Fort Worth International (DFW) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.