Carrier route record
AACOS→DFW
American Airlines · Colorado Springs to Dallas-Fort Worth
- Flights
- 1,037
- Period
- September 2025 to August 2026
- Share of route
- 54%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.
American on COS to DFW lands a B, level with the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 1,037 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate American on COS 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
76.7%
Arrivals under 15 minutes late, of 1,009 completed flights
Avg delay
106 min
Across delayed arrivals only, not all flights
Cancelled
2.41%
National rate is 1.89%
Whole route
77.9%
Every carrier on COS to DFW, 1,933 flights
These figures cover 1,037 flights between September 2025 and August 2026. Beyond the headline rate, 9.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
American against every carrier on COS to DFW
American flew 1,037 of the 1,933 flights on COS to DFW, most of the route. Its 76.7% on time is about level with the route as a whole at 77.9%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Envoy at 87.2% to American at 76.7%. One 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 |
|---|---|---|---|---|---|
| Envoy Airthin sample | 200 | 87.2% | 71 min | 1.50% | A |
| SkyWest Airlines | 696 | 76.9% | 127 min | 2.16% | B |
| American Airlines (this page) | 1,037 | 76.7% | 106 min | 2.41% | B |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 28 points, against half a point between the best and worst carrier.
- 5am–8am250 flights88.0%
- 8am–11am246 flights84.2%
- 11am–2pm190 flights71.7%
- 2pm–5pm215 flights59.8%
- 5pm–8pm136 flights76.2%
- 8pm–5am—
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 88.0% of the time, against 59.8% for the afternoon window. That is 28 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 250 flights scheduled in it.
Across the year
American on COS to DFW through the year
June is the worst month at 68.2% on time, 15 points below September, the best at 82.8%. 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. December was the busiest month here, with 97 flights.
Across the week, Thursday is the strongest day at 80.0% on time and Sunday the weakest at 67.1%, a spread of 13 points.
Arrival by arrival
How late American on COS to DFW runs when it is late
American on COS to DFW often beats the schedule: 324 of 1,009 completed flights, 32%, arrived 15 minutes or more early. The 235 late arrivals split 71 under half an hour, 70 between 30 and 60 minutes, and 94 an hour or more.
- 15+ min early324 flights32.1%
- Within 15 min450 flights44.6%
- 15–29 min late71 flights7.0%
- 30–59 min late70 flights6.9%
- 1–2 hours late42 flights4.2%
- 2+ hours late52 flights5.2%
Scale runs 0% to 100%.
Share of 1,009 completed flights by arrival against schedule.
38 of 233 late departures made up the time and arrived on time, 16% of them. 40 flights left on time and still arrived late.
The worst days
Worst days for American on COS to DFW
The latest arrival of the period was on 13 March 2026, 34 hours 48 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 March 2026 | 34 hours 48 minutes | Carrier |
| 9 May 2026 | 29 hours 40 minutes | Carrier |
| 13 June 2026 | 25 hours 25 minutes | Carrier |
| 2 June 2026 | 20 hours 8 minutes | Carrier |
| 9 April 2026 | 19 hours 9 minutes | Carrier |
Delay causes
Why American runs late on this route
Carrier accounts for 43% of the 25,000 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 40%Late-arriving aircraft
- 10%National Airspace System
- 7%Extreme weather
- 0%Security
40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 25,000 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 24,925 reported delay minutes.
The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 25,000 delay minutes reported here.
Cancellations sit at 2.41% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and stage length
What a delay here costs
9.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
The return leg is a different operation and performs like one: it runs 68.3% on time across 1,037 flights, 8 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 8 points of difference.
One caution: this is a thin sample. 1,037 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 COS to DFW
Put together: treat all of this as provisional. 1,037 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 76.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,009 completed flights over 12 months sit behind that.
Related
Where to go next
- COS to DFW, every carrier
- American on DFW to COS, the return leg
- Envoy Air on COS to DFW87.2%
- SkyWest Airlines on COS to DFW76.9%
- American Airlines network-wide record
- 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 7.05 million flight records
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.