Flight number record

DL 2556

Delta Air Lines · Detroit to Fort Myers

Route: DTW → RSW
Departs: 08:30
Flights: 262
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2556, check with Delta Air Lines.

DL 2556 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 roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 262 flights, with a median arrival 4 minutes early.

On time

80.2%

Arrivals under 15 minutes late, of 257 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

1.91%

National rate is 1.81%

1 hour+ late

5.1%

National rate is 8.1%

These figures cover 262 flights between July 2025 and June 2026. The median arrival is 4 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 2556 flies

DL 2556 flies DTW to RSW without a single fixed slot. Its most common scheduled departure was 08:30, used on 53 of 262 flights, with 07:00 (53 flights) and 08:36 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:3053 flights20.2%
Departs 07:0053 flights20.2%
Departs 08:3652 flights19.8%

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 08:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 2556 runs 4 points worse at 80.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 2556 next to DTW to RSW

Every carrier on DTW to RSW combined arrived on time 74.7% of the time across 1,820 flights, so DL 2556 is 6 points ahead of it. Delta flew 1,354 flights on the same city pair under all its flight numbers, including this one, and those ran 75.1% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 2556 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2556thin sample	262	80.2%	51 min	1.91%	B
All Delta Air Lines on DTW–RSW	1,354	75.1%	68 min	1.33%	B
All carriers on DTW–RSW	1,820	74.7%	67 min	2.03%	C
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2556 quarter by quarter

DL 2556 did not run the same all year. Its best quarter was Oct–Dec 2025 at 84.8% on time and its weakest Jan–Mar 2026 at 67.8%, a swing of 17 points on roughly 87 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 flights82.4%
Oct–Dec 202580 flights84.8%
Jan–Mar 202662 flights67.8%
Apr–Jun 202628 flights—

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2556 ranged from 77.8% on Saturday to 83.8% on Monday. With about 37 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2556 runs late

One category carries most of the weight here. Carrier accounts for 58% of the 2,612 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.

Carrier
58%
National Airspace System
30%
Extreme weather
7%
Late-arriving aircraft
5%

The largest share of delay minutes, 58%, 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 1,523 of the 2,612 delay minutes reported here. The split is drawn from 2,612 delay minutes reported on DL 2556.

Cancellations sit at 1.91% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

5.1% 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 roughly 50 minutes, which a normal layover absorbs.

The 1,084 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 same number turns up on three other city pairs in the data, including RSW to DTW (172), HSV to ATL (41) and DFW to MSP (16), but none flew often enough under DL 2556 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to RSW only.

One caution: this is a thin sample. 262 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 2556

For a booking, read DL 2556 as 80.2% on time with 1.91% cancelled over 262 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