Flight number record

DL 3177

Delta Air Lines · Atlanta to Charlotte

Route: ATL → CLT
Departs: 22:42
Flights: 255
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 3177, check with Delta Air Lines.

DL 3177 lands a B−, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 255 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 3177's record is 6 points better than the US average of 77.3%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.

On time

83.7%

Arrivals under 15 minutes late, of 246 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

3.53%

National rate is 1.89%

1 hour+ late

6.5%

National rate is 8.3%

These figures cover 255 flights between September 2025 and August 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.

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Schedule

When DL 3177 flies

DL 3177 flies ATL to CLT without a single fixed slot. Its most common scheduled departure was 22:42, used on 61 of 255 flights, with 22:40 (60 flights) and 22:41 (57 flights) next.

Departs 22:4261 flights23.9%
Departs 22:4060 flights23.5%
Departs 22:4157 flights22.4%

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 22:42 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 3177 runs 14 points better at 83.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

DL 3177 next to ATL to CLT

Every carrier on ATL to CLT combined arrived on time 80.1% of the time across 4,381 flights, so DL 3177 is 4 points ahead of it. Delta flew 2,587 flights on the same city pair under all its flight numbers, including this one, and those ran 80.5% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.

DL 3177 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 3177thin sample	255	83.7%	61 min	3.53%	B−
All Delta Air Lines on ATL–CLT	2,587	80.5%	61 min	1.12%	B
All carriers on ATL–CLT	4,381	80.1%	74 min	1.89%	B
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 3177 quarter by quarter

DL 3177 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.5% on time and its weakest Jul–Sep 2026 at 74.2%, a swing of 13 points on roughly 85 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.

Oct–Dec 202512 flights—
Jan–Mar 202690 flights85.7%
Apr–Jun 202691 flights87.5%
Jul–Sep 202662 flights74.2%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 3177 did best on Wednesday at 97.2% on time and worst on Sunday at 69.4%. Each day rests on about 36 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 3177 runs when it is late

DL 3177 often beats the schedule: 65 of 246 completed flights, 26%, arrived 15 minutes or more early. The 40 late arrivals split 12 under half an hour, 12 between 30 and 60 minutes, and 16 an hour or more.

15+ min early65 flights26.4%
Within 15 min141 flights57.3%
15–29 min late12 flights4.9%
30–59 min late12 flights4.9%
1–2 hours late13 flights5.3%
2+ hours late3 flights1.2%

Scale runs 0% to 100%.

Share of 246 completed flights by arrival against schedule.

5 of 41 late departures made up the time and arrived on time, 12% of them. Only 4 left on time and still arrived late.

The worst days

Worst days for DL 3177

The latest arrival of the period was on 24 July 2026, 3 hours 7 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in July 2026.

The latest arrivals of DL 3177 in the period
Date	Arrived late by	Largest filed cause
24 July 2026	3 hours 7 minutes	Late-arriving aircraft
18 June 2026	2 hours 56 minutes	Late-arriving aircraft
11 July 2026	2 hours 54 minutes	Late-arriving aircraft
6 February 2026	1 hour 55 minutes	Carrier
12 July 2026	1 hour 51 minutes	Late-arriving aircraft

Delay causes

Why DL 3177 runs late

Late-arriving aircraft accounts for 43% of the 2,440 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
43%
Carrier
42%
National Airspace System
14%
Extreme weather
1%

43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,440 reported delay minutes here, that single category outweighs weather by 43 to one. The split is drawn from 2,440 delay minutes reported on DL 3177.

Cancellations run at 3.53%, against 1.89% nationally. That is about one flight in 30 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

6.5% 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 about an hour, which a normal layover absorbs.

The same number turns up on one other city pair in the data, including GPT to ATL (110), but none flew often enough under DL 3177 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to CLT only.

One caution: this is a thin sample. 255 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 3177

For a booking, the cancellation rate is the figure to plan around on DL 3177: 3.53% of its 255 scheduled flights did not operate. A late arrival costs about an hour, 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures