Carrier route record
AADFW→SJU
American Airlines · Dallas-Fort Worth to San Juan
- Flights
- 702
- 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 DFW to SJU draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 702 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.6%, so American on DFW to SJU runs 10 points behind the country as a whole. Across a thousand flights that is about 99 extra late arrivals.
Key figures
On time
67.7%
Arrivals under 15 minutes late, of 690 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
1.57%
National rate is 1.81%
Whole route
69.5%
Every carrier on DFW to SJU, 989 flights
These figures cover 702 flights between July 2025 and June 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
American against every carrier on DFW to SJU
American flew 702 of the 989 flights on DFW to SJU, most of the route. Its 67.7% on time is 2 points worse than the route as a whole, which runs 69.5%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Spirit at 76.2% to Frontier at 58.8%. 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 |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 250 | 76.2% | 103 min | 4.40% | B− |
| American Airlines (this page) | 702 | 67.7% | 62 min | 1.57% | C |
| Frontier Airlinesthin sample | 37 | 58.8% | 58 min | 8.11% | D− |
Flight by flight
American flight numbers on DFW to SJU
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 26 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–11am278 flights82.0%
- 11am–2pm—
- 2pm–5pm81 flights59.0%
- 5pm–8pm174 flights56.1%
- 8pm–5am169 flights60.5%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 56.1% on time, against 82.0% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 278 flights scheduled in it.
Across the year
American on DFW to SJU through the year
June is the worst month at 48.3% on time, 39 points below November, the best at 87.5%. 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 85 flights.
Across the week, Wednesday is the strongest day at 75.8% on time and Monday the weakest at 63.6%. 12 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 14,000 reported delay minutes.
- 40%Carrier
- 39%Late-arriving aircraft
- 11%Extreme weather
- 9%National Airspace System
Extreme weather accounts for 11% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.8 times the usual weather exposure. The split is drawn from 13,806 reported delay minutes.
39% 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 14,000 reported delay minutes here, that single category outweighs weather by 3 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.
Cancellations sit at 1.57% against a national 1.81%, which is ordinary. Diversions add another 0.14%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
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 79.6% on time across 703 flights, 12 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 12 points of difference.
One caution: this is a thin sample. 702 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 DFW to SJU
Put together: treat all of this as provisional. 702 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 67.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 690 completed flights over 12 months sit behind that.
Related
Where to go next
- DFW to SJU, every carrier
- American on SJU to DFW, the return leg
- Spirit Airlines on DFW to SJU76.2%
- American Airlines network-wide record
- Dallas/Fort Worth International (DFW) delay statistics
- Luis Munoz Marin International (SJU) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.