Flight number record
AA 1170
American Airlines · Dallas-Fort Worth to Colorado Springs
- Route
- DFW → COS
- Departs
- 14:51
- Flights
- 259
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AA 1170, check with American Airlines.
AA 1170 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 259 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.6%, so AA 1170 runs 11 points behind the country as a whole. Across a thousand flights that is about 108 extra late arrivals.
Key figures
On time
66.8%
Arrivals under 15 minutes late, of 250 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
3.47%
National rate is 1.81%
1 hour+ late
11.2%
National rate is 8.1%
These figures cover 259 flights between July 2025 and June 2026. Beyond the headline rate, 11.2% 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.
Schedule
When AA 1170 flies
AA 1170 flies DFW to COS without a single fixed slot. Its most common scheduled departure was 14:51, used on 41 of 259 flights, with 14:54 (39 flights) and 15:13 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:5141 flights15.8%
- Departs 14:5439 flights15.1%
- Departs 15:1332 flights12.4%
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 14:51 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and AA 1170 runs 6 points worse at 66.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
AA 1170 next to DFW to COS
Every carrier on DFW to COS combined arrived on time 70.3% of the time across 1,934 flights, so AA 1170 is 4 points behind it. American flew 1,070 flights on the same city pair under all its flight numbers, including this one, and those ran 64.8% on time. Across its whole network American Airlines managed 74.4%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1170thin sample | 259 | 66.8% | 76 min | 3.47% | C− |
| All American Airlines on DFW–COS | 1,070 | 64.8% | 69 min | 3.36% | D− |
| All carriers on DFW–COS | 1,934 | 70.3% | 71 min | 3.15% | C− |
| American Airlines, whole network | 986,297 | 74.4% | 85 min | 2.29% | C |
Across the year
AA 1170 quarter by quarter
AA 1170 did not run the same all year. Its best quarter was Jan–Mar 2026 at 76.4% on time and its weakest Jul–Sep 2025 at 53.6%, a swing of 23 points on roughly 86 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 202588 flights53.6%
- Oct–Dec 202591 flights69.7%
- Jan–Mar 202675 flights76.4%
- Apr–Jun 20265 flights—
Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, AA 1170 did best on Tuesday at 82.1% on time and worst on Sunday at 50.0%. Each day rests on about 37 flights, so a gap of 32 points is worth noticing but could still narrow in another year.
Delay causes
Why AA 1170 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 6,305 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.
- 49%Late-arriving aircraft
- 29%Carrier
- 16%Extreme weather
- 6%National Airspace System
Extreme weather accounts for 16% 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 2.5 times the usual weather exposure. The split is drawn from 6,305 delay minutes reported on AA 1170.
Cancellations run at 3.47%, against 1.81% nationally. That is about one flight in 30 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.2% 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.
The 592 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 1170 is not only a DFW to COS flight. It also flew COS to DFW (254 flights, 64.8% 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. 259 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 |
|---|---|---|---|---|---|
| COS to DFWthin sample | 254 | 64.8% | 97 min | 3.94% | D− |
What to do with this
Booking AA 1170
For a booking, the cancellation rate is the figure to plan around on AA 1170: 3.47% of its 259 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DFW to COS, every carrier and departure
- COS to DFW, the return direction
- SkyWest Airlines 6267 on the same route64.8%
- 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.