Flight number record
DL 1679
Delta Air Lines · Cincinnati to Tampa
- Route
- CVG → TPA
- Departs
- 14:27
- Flights
- 343
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1679, check with Delta Air Lines.
DL 1679 lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 343 flights, with a median arrival 8 minutes early.
Key figures
On time
80.5%
Arrivals under 15 minutes late, of 338 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
1.17%
National rate is 1.89%
1 hour+ late
8.3%
National rate is 8.3%
These figures cover 343 flights between September 2025 and August 2026. Beyond the headline rate, 8.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1679 flies
DL 1679 flies CVG to TPA without a single fixed slot. Its most common scheduled departure was 14:27, used on 75 of 343 flights, with 15:20 (57 flights) and 14:02 (36 flights) next.
- Departs 14:2775 flights21.9%
- Departs 15:2057 flights16.6%
- Departs 14:0236 flights10.5%
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 14:27 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 1679 runs 9 points better at 80.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 1679 next to CVG to TPA
Every carrier on CVG to TPA combined arrived on time 81.5% of the time across 731 flights, so DL 1679 is about level with it. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1679thin sample | 343 | 80.5% | 74 min | 1.17% | B |
| All Delta Air Lines on CVG–TPAthin sample | 359 | 79.9% | 72 min | 1.11% | B |
| All carriers on CVG–TPA | 731 | 81.5% | 77 min | 0.68% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1679 quarter by quarter
DL 1679 did not run the same all year. Its best quarter was Apr–Jun 2026 at 89.0% on time and its weakest Jul–Sep 2026 at 67.2%, a swing of 22 points on roughly 69 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 flights86.7%
- Oct–Dec 202578 flights82.1%
- Jan–Mar 202682 flights76.9%
- Apr–Jun 202691 flights89.0%
- Jul–Sep 202662 flights67.2%
Scale runs 60% to 95%.
By weekday, DL 1679 ranged from 76.1% on Sunday to 87.5% on Wednesday. With about 49 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1679 runs when it is late
DL 1679 often beats the schedule: 90 of 338 completed flights, 27%, arrived 15 minutes or more early. The 66 late arrivals split 18 under half an hour, 20 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early90 flights26.6%
- Within 15 min182 flights53.8%
- 15–29 min late18 flights5.3%
- 30–59 min late20 flights5.9%
- 1–2 hours late16 flights4.7%
- 2+ hours late12 flights3.6%
Scale runs 0% to 100%.
Share of 338 completed flights by arrival against schedule.
12 of 68 late departures made up the time and arrived on time, 18% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 1679
The latest arrival of the period was on 16 September 2025, 5 hours 37 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 September 2025 | 5 hours 37 minutes | Carrier |
| 26 March 2026 | 5 hours | Late-arriving aircraft |
| 1 June 2026 | 4 hours 56 minutes | Late-arriving aircraft |
| 28 April 2026 | 3 hours 41 minutes | Carrier |
| 4 August 2026 | 2 hours 37 minutes | Late-arriving aircraft |
Delay causes
Why DL 1679 runs late
Late-arriving aircraft accounts for 48% of the 4,871 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 35%Carrier
- 12%National Airspace System
- 4%Extreme weather
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,871 reported delay minutes here, that single category outweighs weather by 11 to one. The split is drawn from 4,871 delay minutes reported on DL 1679.
Cancellations sit at 1.17% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and routes
What a delay on this flight costs
8.3% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 773 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.
DL 1679 is not only a CVG to TPA flight. It also flew TPA to CVG (311 flights, 71.0% 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. 343 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 |
|---|---|---|---|---|---|
| TPA to CVGthin sample | 311 | 71.0% | 106 min | 1.29% | C |
What to do with this
Booking DL 1679
For a booking, read DL 1679 as 80.5% on time with 1.17% cancelled over 343 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- CVG to TPA, every carrier and departure
- TPA to CVG, the return direction
- Frontier Airlines 1668 on the same route87.3%
- Cincinnati/Northern Kentucky International (CVG) delay statistics
- Tampa International (TPA) 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
- Why the first flight of the morning is statistically safest
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.