Carrier route record
DLATL→MCI
Delta Air Lines · Atlanta to Kansas City
- Flights
- 2,758
- Period
- July 2025 to June 2026
- Share of route
- 84%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on ATL to MCI earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 2,758 flights, with a median arrival 5 minutes early.
Set against the rest of the country, Delta's ATL to MCI record is 7 points better than the US average of 77.6%. That gap is worth roughly 70 fewer late arrivals for every thousand flights.
Key figures
On time
84.6%
Arrivals under 15 minutes late, of 2,714 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
1.38%
National rate is 1.81%
Whole route
82.8%
Every carrier on ATL to MCI, 3,281 flights
These figures cover 2,758 flights between July 2025 and June 2026. The median arrival is 5 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.
Carrier by carrier
Delta against every carrier on ATL to MCI
Delta flew 2,758 of the 3,281 flights on ATL to MCI, most of the route. Its 84.6% on time is 2 points better than the route as a whole, which runs 82.8%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from SkyWest at 100.0% to Frontier at 68.6%. 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 |
|---|---|---|---|---|---|
| SkyWest Airlinesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| Delta Air Lines (this page) | 2,758 | 84.6% | 57 min | 1.38% | B |
| Southwest Airlines | 365 | 75.9% | 50 min | 0.00% | B+ |
| Frontier Airlinesthin sample | 157 | 68.6% | 77 min | 0.64% | C+ |
Flight by flight
Delta flight numbers on ATL to MCI
Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 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–8am1 flights—
- 8am–11am590 flights90.2%
- 11am–2pm440 flights90.0%
- 2pm–5pm681 flights83.2%
- 5pm–8pm324 flights76.2%
- 8pm–5am722 flights81.7%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 90.2% of the time, against 76.2% for the evening window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 722 flights scheduled in it.
Across the year
Delta on ATL to MCI through the year
September is the best month on the calendar at 91.1% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 263 flights.
Across the week, Wednesday is the strongest day at 87.6% on time and Sunday the weakest at 81.8%. 6 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Delta runs late on this route
One category carries most of the weight here. Carrier accounts for 49% of the 24,000 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%Carrier
- 24%Late-arriving aircraft
- 22%National Airspace System
- 5%Extreme weather
- 0%Security
The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 12,000 of the 24,000 delay minutes reported here. The split is drawn from 23,891 reported delay minutes.
Cancellations sit at 1.38% against a national 1.81%, which is ordinary. Diversions add another 0.22%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.1% 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 692 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.
The return leg is a different operation and performs like one: it runs 90.1% on time across 2,759 flights, 6 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 6 points of difference.
The sample behind these figures is 2,758 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Delta on ATL to MCI
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 91.1% on time and March 74.5%, a swing of 17 points. If the dates move at all, move them out of March before you think about anything else. 2,714 completed flights over 12 months sit behind that.
Related
Where to go next
- ATL to MCI, every carrier
- Delta on MCI to ATL, the return leg
- Southwest Airlines on ATL to MCI75.9%
- Frontier Airlines on ATL to MCI68.6%
- Delta Air Lines network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Kansas City International (MCI) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
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.