Flight number record

DL 1679

Delta Air Lines · Cincinnati to Tampa

Route: CVG → TPA
Departs: 14:27
Flights: 343
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1679, check with Delta Air Lines.

DL 1679 lands a B, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 343 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 1679's record is 4 points better than the US average of 77.6%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.

On time

81.9%

Arrivals under 15 minutes late, of 337 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

1.17%

National rate is 1.81%

1 hour+ late

6.8%

National rate is 8.1%

These figures cover 343 flights between July 2025 and June 2026. The median arrival is 8 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.

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 13:45 (48 flights) and 15:45 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:2775 flights21.9%
Departs 13:4548 flights14.0%
Departs 15:4539 flights11.4%

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 14:27 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 1679 runs 10 points better at 81.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1679 next to CVG to TPA

Every carrier on CVG to TPA combined arrived on time 81.4% of the time across 726 flights, so DL 1679 is about level with it. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 1679 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1679thin sample	343	81.9%	76 min	1.17%	B
All Delta Air Lines on CVG–TPAthin sample	359	81.3%	73 min	1.11%	B
All carriers on CVG–TPA	726	81.4%	82 min	0.69%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 Jan–Mar 2026 at 76.9%, a swing of 12 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 202592 flights78.9%
Oct–Dec 202578 flights82.1%
Jan–Mar 202682 flights76.9%
Apr–Jun 202691 flights89.0%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1679 did best on Wednesday at 87.5% on time and worst on Thursday at 73.5%. Each day rests on about 49 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1679 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 4,615 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.

Late-arriving aircraft
45%
Carrier
39%
National Airspace System
9%
Extreme weather
7%

45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,615 reported delay minutes here, that single category outweighs weather by 7 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,615 delay minutes reported on DL 1679.

Cancellations sit at 1.17% against a national 1.81%, which is ordinary. Diversions add another 0.58%.

Connections and routes

What a delay on this flight costs

6.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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. 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.

DL 1679 is not only a CVG to TPA flight. It also flew TPA to CVG (290 flights, 72.7% 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.

Other routes flown as DL 1679
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
TPA to CVGthin sample	290	72.7%	104 min	1.38%	C

What to do with this

Booking DL 1679

For a booking, read DL 1679 as 81.9% on time with 1.17% cancelled over 343 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures