Flight number record

DL 1089

Delta Air Lines · Atlanta to Fort Myers

Route: ATL → RSW
Departs: 08:05
Flights: 360
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1089, check with Delta Air Lines.

DL 1089 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 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 360 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 1089's record is 11 points better than the US average of 77.6%. That gap is worth roughly 107 fewer late arrivals for every thousand flights.

On time

88.3%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

42 min

Across delayed arrivals only, not all flights

Cancelled

2.50%

National rate is 1.81%

1 hour+ late

2.3%

National rate is 8.1%

These figures cover 360 flights between July 2025 and June 2026. The median arrival is 9 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 1089 flies

DL 1089 flies ATL to RSW without a single fixed slot. Its most common scheduled departure was 08:05, used on 194 of 360 flights, with 08:15 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:05194 flights53.9%
Departs 08:1540 flights11.1%

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 08:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 1089 runs 4 points better at 88.3%. 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 1089 next to ATL to RSW

Every carrier on ATL to RSW combined arrived on time 77.2% of the time across 2,844 flights, so DL 1089 is 11 points ahead of it. Delta flew 2,741 flights on the same city pair under all its flight numbers, including this one, and those ran 77.8% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 7 points.

DL 1089 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1089thin sample	360	88.3%	42 min	2.50%	A
All Delta Air Lines on ATL–RSW	2,741	77.8%	58 min	1.50%	B
All carriers on ATL–RSW	2,844	77.2%	59 min	1.51%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1089 quarter by quarter

Quarter by quarter DL 1089 held fairly steady: 89.5% in Jul–Sep 2025, 87.4% in Oct–Dec 2025, 87.4% in Jan–Mar 2026 and 88.9% in Apr–Jun 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202587 flights89.5%
Oct–Dec 202592 flights87.4%
Jan–Mar 202690 flights87.4%
Apr–Jun 202691 flights88.9%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1089 did best on Thursday at 96.0% on time and worst on Monday at 83.0%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1089 runs late

One category carries most of the weight here. Carrier accounts for 54% of the 1,701 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
54%
National Airspace System
36%
Extreme weather
9%
Late-arriving aircraft
1%

The largest share of delay minutes, 54%, 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 922 of the 1,701 delay minutes reported here. The split is drawn from 1,701 delay minutes reported on DL 1089.

Cancellations run at 2.50%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.3% land an hour or more behind schedule, against 8.1% 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.

The 515 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 1089 is not only a ATL to RSW flight. It also flew RSW to ATL (335 flights, 88.1% 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. 360 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 1089
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
RSW to ATLthin sample	335	88.1%	84 min	2.09%	A

What to do with this

Booking DL 1089

For a booking, the cancellation rate is the figure to plan around on DL 1089: 2.50% of its 360 scheduled flights did not operate. A late arrival costs roughly 40 minutes, but a cancellation costs the day, so leave a later option open.

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