Flight number record

DL 2739

Delta Air Lines · Hartford to Atlanta

Route: BDL → ATL
Departs: 16:57
Flights: 255
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2739, check with Delta Air Lines.

DL 2739 lands a B−, 3 points better than the national rate of 77.3%. 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 rests on 255 flights, with a median arrival 13 minutes early.

On time

80.7%

Arrivals under 15 minutes late, of 243 completed flights

Avg delay

70 min

Across delayed arrivals only, not all flights

Cancelled

3.92%

National rate is 1.89%

1 hour+ late

7.8%

National rate is 8.3%

These figures cover 255 flights between September 2025 and August 2026. The median arrival is 13 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.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Schedule

When DL 2739 flies

DL 2739 flies BDL to ATL without a single fixed slot. Its most common scheduled departure was 16:57, used on 34 of 255 flights.

Departs 16:5734 flights13.3%

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 16:57 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2739 runs 9 points better at 80.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Against the route

DL 2739 next to BDL to ATL

Every carrier on BDL to ATL combined arrived on time 84.2% of the time across 2,310 flights, so DL 2739 is 4 points behind it. Delta flew 2,219 flights on the same city pair under all its flight numbers, including this one, and those ran 84.5% on time. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.

DL 2739 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2739thin sample	255	80.7%	70 min	3.92%	B−
All Delta Air Lines on BDL–ATL	2,219	84.5%	64 min	1.98%	B
All carriers on BDL–ATL	2,310	84.2%	66 min	1.95%	B
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 2739 quarter by quarter

DL 2739 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.2% on time and its weakest Jul–Sep 2026 at 69.5%, a swing of 19 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 flights88.2%
Apr–Jun 202691 flights80.9%
Jul–Sep 202662 flights69.5%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2739 did best on Wednesday at 94.4% on time and worst on Sunday at 70.6%. Each day rests on about 36 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 2739 runs when it is late

DL 2739 often beats the schedule: 118 of 243 completed flights, 49%, arrived 15 minutes or more early. The 47 late arrivals split 12 under half an hour, 16 between 30 and 60 minutes, and 19 an hour or more.

15+ min early118 flights48.6%
Within 15 min78 flights32.1%
15–29 min late12 flights4.9%
30–59 min late16 flights6.6%
1–2 hours late13 flights5.3%
2+ hours late6 flights2.5%

Scale runs 0% to 100%.

Share of 243 completed flights by arrival against schedule.

14 of 54 late departures made up the time and arrived on time, 26% of them. 7 flights left on time and still arrived late.

The worst days

Worst days for DL 2739

The latest arrival of the period was on 21 December 2025, 6 hours 28 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across December, July, June and August, with no single month standing out.

The latest arrivals of DL 2739 in the period
Date	Arrived late by	Largest filed cause
21 December 2025	6 hours 28 minutes	Carrier
18 July 2026	4 hours 56 minutes	Late-arriving aircraft
14 June 2026	2 hours 25 minutes	Carrier
6 August 2026	2 hours 18 minutes	National Airspace System
11 July 2026	2 hours 16 minutes	Extreme weather

Delay causes

Why DL 2739 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,265 reported delay minutes.

Late-arriving aircraft
40%
National Airspace System
24%
Carrier
21%
Extreme weather
15%

Extreme weather accounts for 15% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.5 times the usual weather exposure. The split is drawn from 3,265 delay minutes reported on DL 2739.

Cancellations run at 3.92%, against 1.89% nationally. That is about one flight in 25 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

7.8% 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 a little over an hour, which a normal layover absorbs.

The 859 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.

DL 2739 is not only a BDL to ATL flight. It also flew ATL to BDL (255 flights, 83.7% 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. 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.

Other routes flown as DL 2739
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
ATL to BDLthin sample	255	83.7%	51 min	3.92%	B−

What to do with this

Booking DL 2739

For a booking, the cancellation rate is the figure to plan around on DL 2739: 3.92% of its 255 scheduled flights did not operate. A late arrival costs a little over 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