Flight number record
DL 2964
Delta Air Lines · Hartford to Detroit
- Route
- BDL → DTW
- Departs
- 05:30
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2964, check with Delta Air Lines.
DL 2964 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.5 hours. That rests on 365 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 2964's record is 17 points better than the US average of 77.3%. That gap is worth roughly 166 fewer late arrivals for every thousand flights.
Key figures
On time
93.9%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
151 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
2.2%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 12 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 2964 flies
DL 2964 flies BDL to DTW without a single fixed slot. Its most common scheduled departure was 05:30, used on 261 of 365 flights.
- Departs 05:30261 flights71.5%
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 05:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2964 runs 5 points better at 93.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 2964 next to BDL to DTW
Every carrier on BDL to DTW combined arrived on time 88.7% of the time across 1,243 flights, so DL 2964 is 5 points ahead of it. Delta flew 1,240 flights on the same city pair under all its flight numbers, including this one, and those ran 88.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2964 | 365 | 93.9% | 151 min | 1.37% | A |
| All Delta Air Lines on BDL–DTW | 1,240 | 88.8% | 81 min | 2.34% | A |
| All carriers on BDL–DTW | 1,243 | 88.7% | 82 min | 2.33% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2964 quarter by quarter
DL 2964 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 86.0%, a swing of 14 points on roughly 73 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 202530 flights100.0%
- Oct–Dec 202592 flights93.4%
- Jan–Mar 202690 flights86.0%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights98.4%
Scale runs 80% to 100%.
By weekday, DL 2964 ranged from 86.3% on Sunday to 98.0% on Tuesday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2964 runs when it is late
DL 2964 often beats the schedule: 148 of 360 completed flights, 41%, arrived 15 minutes or more early. Most of the lateness is short. 11 of the 22 late arrivals were under half an hour behind, and 8 reached an hour or more.
- 15+ min early148 flights41.1%
- Within 15 min190 flights52.8%
- 15–29 min late11 flights3.1%
- 30–59 min late3 flights0.8%
- 1–2 hours late2 flights0.6%
- 2+ hours late6 flights1.7%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
Only 19 of 360 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for DL 2964
The latest arrival of the period was on 20 October 2025, 14 hours 39 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 October 2025 | 14 hours 39 minutes | Carrier |
| 22 February 2026 | 10 hours 42 minutes | Late-arriving aircraft |
| 31 December 2025 | 6 hours 2 minutes | Carrier |
| 8 March 2026 | 6 hours 1 minute | Carrier |
| 27 January 2026 | 5 hours 57 minutes | Extreme weather |
Delay causes
Why DL 2964 runs late
Carrier accounts for 58% of the 3,313 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 19%Late-arriving aircraft
- 12%National Airspace System
- 11%Extreme weather
The largest share of delay minutes, 58%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,910 of the 3,313 delay minutes reported here. The split is drawn from 3,313 delay minutes reported on DL 2964.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.2% land an hour or more behind schedule, against 8.3% 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 549 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.
Every one of the 365 flights under DL 2964 in the data flew BDL to DTW. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 2964
For a booking, DL 2964 has one of the better records a US domestic flight can show: 93.9% on time and 1.37% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- BDL to DTW, every carrier and departure
- DTW to BDL, the return direction
- Delta Air Lines 2163 on the same route86.6%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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 ; recomputed monthly. How this data is collected.