Flight number record
AA 1718
American Airlines · San Antonio to Washington
- Route
- SAT → DCA
- Departs
- 06:35
- Flights
- 351
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 1718, check with American Airlines.
AA 1718 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.6 hours. That rests on 351 flights, with a median arrival 10 minutes early.
Set against the rest of the country, AA 1718's record is 13 points better than the US average of 77.3%. That gap is worth roughly 128 fewer late arrivals for every thousand flights.
Key figures
On time
90.1%
Arrivals under 15 minutes late, of 343 completed flights
Avg delay
158 min
Across delayed arrivals only, not all flights
Cancelled
1.99%
National rate is 1.89%
1 hour+ late
3.8%
National rate is 8.3%
These figures cover 351 flights between September 2025 and August 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.
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Schedule
When AA 1718 flies
AA 1718 flies SAT to DCA without a single fixed slot. Its most common scheduled departure was 06:35, used on 64 of 351 flights, with 06:00 (60 flights) and 06:20 (42 flights) next.
- Departs 06:3564 flights18.2%
- Departs 06:0060 flights17.1%
- Departs 06:2042 flights12.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:35 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AA 1718 runs level with that at 90.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AA 1718 next to SAT to DCA
Across its whole network American Airlines managed 74.7%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1718thin sample | 351 | 90.1% | 158 min | 1.99% | A |
| All American Airlines on SAT–DCAthin sample | 351 | 90.1% | 158 min | 1.99% | A |
| All carriers on SAT–DCAthin sample | 351 | 90.1% | 158 min | 1.99% | A |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 1718 quarter by quarter
Quarter by quarter AA 1718 held fairly steady: 96.7% in Jul–Sep 2025, 90.5% in Oct–Dec 2025, 87.8% in Jan–Mar 2026, 88.6% in Apr–Jun 2026 and 91.5% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202584 flights90.5%
- Jan–Mar 202685 flights87.8%
- Apr–Jun 202691 flights88.6%
- Jul–Sep 202661 flights91.5%
Scale runs 80% to 100%.
By weekday, AA 1718 ranged from 86.0% on Monday to 93.9% on Friday. With about 50 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late AA 1718 runs when it is late
AA 1718 often beats the schedule: 119 of 343 completed flights, 35%, arrived 15 minutes or more early. The 34 late arrivals split 11 under half an hour, 10 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early119 flights34.7%
- Within 15 min190 flights55.4%
- 15–29 min late11 flights3.2%
- 30–59 min late10 flights2.9%
- 1–2 hours late4 flights1.2%
- 2+ hours late9 flights2.6%
Scale runs 0% to 100%.
Share of 343 completed flights by arrival against schedule.
9 of 34 late departures made up the time and arrived on time, 26% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for AA 1718
The latest arrival of the period was on 28 May 2026, 27 hours 10 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 May 2026 | 27 hours 10 minutes | Carrier |
| 11 April 2026 | 11 hours 28 minutes | Carrier |
| 14 April 2026 | 10 hours 48 minutes | Carrier |
| 20 August 2026 | 7 hours 22 minutes | Late-arriving aircraft |
| 1 September 2025 | 5 hours 11 minutes | Carrier |
Delay causes
Why AA 1718 runs late
Carrier accounts for 75% of the 5,364 delay minutes carriers reported here, and the remaining four split what is left.
- 75%Carrier
- 12%Late-arriving aircraft
- 8%Extreme weather
- 5%National Airspace System
The largest share of delay minutes, 75%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,024 of the 5,364 delay minutes reported here. The split is drawn from 5,364 delay minutes reported on AA 1718.
Cancellations sit at 1.99% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 1,380 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on two other city pairs in the data, including CMH to DFW (1) and DFW to CMH (1), but none flew often enough under AA 1718 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SAT to DCA only.
One caution: this is a thin sample. 351 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 AA 1718
For a booking, read AA 1718 as 90.1% on time with 1.99% cancelled over 351 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- San Antonio International (SAT) delay statistics
- Ronald Reagan Washington National (DCA) delay statistics
- American Airlines on-time record
- Every American Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means American Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.