Flight number record
DL 2909
Delta Air Lines · Columbus to Atlanta
- Route
- CMH → ATL
- Departs
- 07:05
- Flights
- 314
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2909, check with Delta Air Lines.
DL 2909 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 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 314 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 2909's record is 14 points better than the US average of 77.3%. That gap is worth roughly 143 fewer late arrivals for every thousand flights.
Key figures
On time
91.6%
Arrivals under 15 minutes late, of 311 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.64%
National rate is 1.89%
1 hour+ late
3.2%
National rate is 8.3%
These figures cover 314 flights between September 2025 and August 2026. The median arrival is 12 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 DL 2909 flies
DL 2909 flies CMH to ATL without a single fixed slot. Its most common scheduled departure was 07:05, used on 125 of 314 flights, with 07:00 (104 flights) and 07:07 (37 flights) next.
- Departs 07:05125 flights39.8%
- Departs 07:00104 flights33.1%
- Departs 07:0737 flights11.8%
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 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2909 runs 2 points better at 91.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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.
Against the route
DL 2909 next to CMH to ATL
Every carrier on CMH to ATL combined arrived on time 84.8% of the time across 3,129 flights, so DL 2909 is 7 points ahead of it. Delta flew 2,678 flights on the same city pair under all its flight numbers, including this one, and those ran 87.1% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2909thin sample | 314 | 91.6% | 77 min | 0.64% | A+ |
| All Delta Air Lines on CMH–ATL | 2,678 | 87.1% | 91 min | 1.38% | A |
| All carriers on CMH–ATL | 3,129 | 84.8% | 82 min | 1.44% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2909 quarter by quarter
DL 2909 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 85.4%, a swing of 11 points on roughly 63 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 202530 flights96.7%
- Oct–Dec 202588 flights89.8%
- Jan–Mar 202649 flights85.4%
- Apr–Jun 202685 flights95.2%
- Jul–Sep 202662 flights91.9%
Scale runs 75% to 100%.
By weekday, DL 2909 did best on Friday at 100.0% on time and worst on Sunday at 86.7%. Each day rests on about 45 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2909 runs when it is late
DL 2909 often beats the schedule: 125 of 311 completed flights, 40%, arrived 15 minutes or more early. The 26 late arrivals split 11 under half an hour, 5 between 30 and 60 minutes, and 10 an hour or more.
- 15+ min early125 flights40.2%
- Within 15 min160 flights51.4%
- 15–29 min late11 flights3.5%
- 30–59 min late5 flights1.6%
- 1–2 hours late6 flights1.9%
- 2+ hours late4 flights1.3%
Scale runs 0% to 100%.
Share of 311 completed flights by arrival against schedule.
4 of 20 late departures made up the time and arrived on time, 20% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 2909
The latest arrival of the period was on 30 June 2026, 5 hours 13 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 |
|---|---|---|
| 30 June 2026 | 5 hours 13 minutes | Carrier |
| 9 November 2025 | 4 hours 57 minutes | Carrier |
| 5 February 2026 | 3 hours 52 minutes | Carrier |
| 27 April 2026 | 2 hours 26 minutes | Carrier |
| 18 March 2026 | 1 hour 57 minutes | Carrier |
Delay causes
Why DL 2909 runs late
Carrier accounts for 78% of the 2,000 delay minutes carriers reported here, and the remaining four split what is left.
- 78%Carrier
- 21%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 78%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,556 of the 2,000 delay minutes reported here. The split is drawn from 2,000 delay minutes reported on DL 2909.
Cancellations are rare at 0.64%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.2% 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.
Every one of the 314 flights under DL 2909 in the data flew CMH to ATL. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 314 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 DL 2909
For a booking, DL 2909 has one of the better records a US domestic flight can show: 91.6% on time and 0.64% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- CMH to ATL, every carrier and departure
- ATL to CMH, the return direction
- Delta Air Lines 2469 on the same route90.9%
- Delta Air Lines 1522 on the same route87.8%
- Delta Air Lines 1479 on the same route88.0%
- Delta Air Lines 2200 on the same route87.0%
- John Glenn Columbus International (CMH) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- How to read this site: grades, sample sizes, and honest caveats
A flight number here means Delta Air Lines’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.