Flight number record

DL 2951

Delta Air Lines · Hartford to Atlanta

Route: BDL → ATL
Departs: 11:55
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2951, check with Delta Air Lines.

DL 2951 lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 45 minutes on average. That is a workable record, not a spotless one. That rests on 349 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 2951's record is 6 points better than the US average of 77.6%. That gap is worth roughly 57 fewer late arrivals for every thousand flights.

On time

83.3%

Arrivals under 15 minutes late, of 342 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

1.15%

National rate is 1.81%

1 hour+ late

5.0%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 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.

Schedule

When DL 2951 flies

DL 2951 flies BDL to ATL without a single fixed slot. Its most common scheduled departure was 11:55, used on 49 of 349 flights, with 11:56 (49 flights) and 11:22 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:5549 flights14.0%
Departs 11:5649 flights14.0%
Departs 11:2238 flights10.9%

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 11:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 2951 runs 5 points better at 83.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2951 next to BDL to ATL

Every carrier on BDL to ATL combined arrived on time 83.4% of the time across 2,328 flights, so DL 2951 is about level with it. Delta flew 2,212 flights on the same city pair under all its flight numbers, including this one, and those ran 83.9% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 2 points.

DL 2951 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2951thin sample	349	83.3%	46 min	1.15%	B
All Delta Air Lines on BDL–ATL	2,212	83.9%	73 min	2.03%	B
All carriers on BDL–ATL	2,328	83.4%	73 min	1.98%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2951 quarter by quarter

DL 2951 did not run the same all year. Its best quarter was Jan–Mar 2026 at 87.2% on time and its weakest Oct–Dec 2025 at 75.0%, a swing of 12 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 202581 flights85.9%
Oct–Dec 202588 flights75.0%
Jan–Mar 202689 flights87.2%
Apr–Jun 202691 flights85.6%

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

By weekday, DL 2951 did best on Thursday at 92.3% on time and worst on Monday at 73.5%. Each day rests on about 50 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2951 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 2,595 reported delay minutes.

Late-arriving aircraft
37%
National Airspace System
31%
Carrier
31%
Extreme weather
1%

37% 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 2,595 reported delay minutes here, that single category outweighs weather by 37 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 2,595 delay minutes reported on DL 2951.

Cancellations sit at 1.15% against a national 1.81%, which is ordinary. Diversions add another 0.86%.

Connections and routes

What a delay on this flight costs

5.0% 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 about 45 minutes, 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. 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 2951 is not only a BDL to ATL flight. It also flew ATL to BDL (346 flights, 90.7% 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. 349 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 2951
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
ATL to BDLthin sample	346	90.7%	42 min	0.87%	A+

What to do with this

Booking DL 2951

For a booking, read DL 2951 as 83.3% on time with 1.15% cancelled over 349 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