Flight number record
AA 2635
American Airlines · Dallas-Fort Worth to Ontario
- Route
- DFW → ONT
- Departs
- 12:35
- Flights
- 279
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AA 2635, check with American Airlines.
AA 2635 lands a B, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 279 flights, with a median arrival 14 minutes early.
Set against the rest of the country, AA 2635's record is 4 points better than the US average of 77.6%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.
Key figures
On time
82.0%
Arrivals under 15 minutes late, of 272 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
2.51%
National rate is 1.81%
1 hour+ late
7.7%
National rate is 8.1%
These figures cover 279 flights between July 2025 and June 2026. The median arrival is 14 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.
Schedule
When AA 2635 flies
AA 2635 flies DFW to ONT without a single fixed slot. Its most common scheduled departure was 12:35, used on 72 of 279 flights, with 12:40 (56 flights) and 12:59 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 12:3572 flights25.8%
- Departs 12:4056 flights20.1%
- Departs 12:5937 flights13.3%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 12:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and AA 2635 runs 3 points better at 82.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
AA 2635 next to DFW to ONT
Every carrier on DFW to ONT combined arrived on time 68.9% of the time across 2,306 flights, so AA 2635 is 13 points ahead of it. American flew 1,984 flights on the same city pair under all its flight numbers, including this one, and those ran 66.9% on time. Across its whole network American Airlines managed 74.4%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 2635thin sample | 279 | 82.0% | 64 min | 2.51% | B |
| All American Airlines on DFW–ONT | 1,984 | 66.9% | 66 min | 2.92% | C |
| All carriers on DFW–ONT | 2,306 | 68.9% | 66 min | 2.91% | C |
| American Airlines, whole network | 986,297 | 74.4% | 85 min | 2.29% | C |
Across the year
AA 2635 quarter by quarter
AA 2635 did not run the same all year. Its best quarter was Jan–Mar 2026 at 87.2% on time and its weakest Jul–Sep 2025 at 75.3%, a swing of 12 points on roughly 93 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202592 flights75.3%
- Oct–Dec 202591 flights83.5%
- Jan–Mar 202690 flights87.2%
- Apr–Jun 20266 flights—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, AA 2635 did best on Friday at 89.7% on time and worst on Wednesday at 75.0%. Each day rests on about 40 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Delay causes
Why AA 2635 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 3,132 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.
- 50%Late-arriving aircraft
- 24%Carrier
- 17%Extreme weather
- 10%National Airspace System
Extreme weather accounts for 17% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.8 times the usual weather exposure. The split is drawn from 3,132 delay minutes reported on AA 2635.
Cancellations run at 2.51%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
7.7% 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 about an hour, which a normal layover absorbs.
The 1,188 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
AA 2635 is not only a DFW to ONT flight. It also flew ONT to DFW (274 flights, 69.5% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 279 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| ONT to DFWthin sample | 274 | 69.5% | 64 min | 3.65% | C− |
What to do with this
Booking AA 2635
For a booking, the cancellation rate is the figure to plan around on AA 2635: 2.51% of its 279 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DFW to ONT, every carrier and departure
- ONT to DFW, the return direction
- American Airlines 3006 on the same route60.0%
- American Airlines 1820 on the same route76.6%
- Dallas/Fort Worth International (DFW) 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
- Why the first flight of the morning is statistically safest
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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.