Flight number record

DL 1275

Delta Air Lines · Tampa to Raleigh

Route: TPA → RDU
Departs: 20:59
Flights: 266
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1275, check with Delta Air Lines.

DL 1275 lands a B, 3 points better than the national rate of 77.6%. 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 is a workable record, not a spotless one. That rests on 266 flights, with a median arrival 14 minutes early.

On time

80.8%

Arrivals under 15 minutes late, of 260 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

2.26%

National rate is 1.81%

1 hour+ late

10.4%

National rate is 8.1%

These figures cover 266 flights between July 2025 and June 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 1275 flies

DL 1275 flies TPA to RDU without a single fixed slot. Its most common scheduled departure was 20:59, used on 125 of 266 flights, with 21:07 (30 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:59125 flights47.0%
Departs 21:0730 flights11.3%

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 20:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 1275 runs 10 points better at 80.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 1275 next to TPA to RDU

Every carrier on TPA to RDU combined arrived on time 81.8% of the time across 1,280 flights, so DL 1275 is about level with it. Delta flew 649 flights on the same city pair under all its flight numbers, including this one, and those ran 86.2% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 1275 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1275thin sample	266	80.8%	81 min	2.26%	B
All Delta Air Lines on TPA–RDU	649	86.2%	85 min	2.00%	A
All carriers on TPA–RDU	1,280	81.8%	71 min	1.64%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1275 quarter by quarter

Quarter by quarter DL 1275 held fairly steady: 74.6% in Jul–Sep 2025, 83.3% in Oct–Dec 2025, 83.3% in Jan–Mar 2026 and 82.4% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202568 flights74.6%
Oct–Dec 202567 flights83.3%
Jan–Mar 202644 flights83.3%
Apr–Jun 202687 flights82.4%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1275 did best on Friday at 90.0% on time and worst on Sunday at 73.8%. Each day rests on about 38 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1275 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 79% of the 4,031 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
79%
Carrier
15%
National Airspace System
6%
Extreme weather
1%

79% 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 4,031 reported delay minutes here, that single category outweighs weather by 79 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 4,031 delay minutes reported on DL 1275.

Cancellations sit at 2.26% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The 587 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 1275 is not only a TPA to RDU flight. It also flew RDU to TPA (266 flights, 76.6% 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. 266 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 1275
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
RDU to TPAthin sample	266	76.6%	82 min	1.88%	B

What to do with this

Booking DL 1275

For a booking, read DL 1275 as 80.8% on time with 2.26% cancelled over 266 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