Flight number record
DL 1137
Delta Air Lines · Albany to Atlanta
- Route
- ALB → ATL
- Departs
- 12:51
- Flights
- 253
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1137, check with Delta Air Lines.
DL 1137 lands a B, 4 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 about 50 minutes on average. That rests on 253 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 1137's record is 4 points better than the US average of 77.3%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.
Key figures
On time
81.3%
Arrivals under 15 minutes late, of 246 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
1.98%
National rate is 1.89%
1 hour+ late
4.5%
National rate is 8.3%
These figures cover 253 flights between September 2025 and August 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.
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Schedule
When DL 1137 flies
DL 1137 flies ALB to ATL without a single fixed slot. Its most common scheduled departure was 12:51, used on 43 of 253 flights, with 13:12 (32 flights) and 13:00 (30 flights) next.
- Departs 12:5143 flights17.0%
- Departs 13:1232 flights12.6%
- Departs 13:0030 flights11.9%
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 12:51 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 1137 runs 3 points better at 81.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 1137 next to ALB to ATL
Every carrier on ALB to ATL combined arrived on time 84.0% of the time across 1,042 flights, so DL 1137 is 3 points behind it. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1137thin sample | 253 | 81.3% | 50 min | 1.98% | B |
| All Delta Air Lines on ALB–ATL | 1,042 | 84.0% | 100 min | 2.30% | B |
| All carriers on ALB–ATL | 1,042 | 84.0% | 100 min | 2.30% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1137 quarter by quarter
DL 1137 did not run the same all year. Its best quarter was Apr–Jun 2026 at 89.0% on time and its weakest Jul–Sep 2026 at 68.3%, a swing of 21 points on roughly 84 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 202688 flights84.3%
- Apr–Jun 202691 flights89.0%
- Jul–Sep 202662 flights68.3%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1137 did best on Wednesday at 85.7% on time and worst on Tuesday at 71.4%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1137 runs when it is late
DL 1137 often beats the schedule: 86 of 246 completed flights, 35%, arrived 15 minutes or more early. The 46 late arrivals split 20 under half an hour, 15 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early86 flights35.0%
- Within 15 min114 flights46.3%
- 15–29 min late20 flights8.1%
- 30–59 min late15 flights6.1%
- 1–2 hours late7 flights2.8%
- 2+ hours late4 flights1.6%
Scale runs 0% to 100%.
Share of 246 completed flights by arrival against schedule.
A late pushback is often recovered here: of 53 departures that left 15 minutes late or more, 21 still arrived on time. In the other direction, 14 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ATL.
The worst days
Worst days for DL 1137
The latest arrival of the period was on 21 February 2026, 3 hours 12 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 |
|---|---|---|
| 21 February 2026 | 3 hours 12 minutes | Carrier |
| 5 January 2026 | 2 hours 54 minutes | Late-arriving aircraft |
| 12 July 2026 | 2 hours 30 minutes | Carrier |
| 15 May 2026 | 2 hours 5 minutes | Carrier |
| 27 December 2025 | 1 hour 52 minutes | Late-arriving aircraft |
Delay causes
Why DL 1137 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 2,309 reported delay minutes.
- 42%Carrier
- 28%Late-arriving aircraft
- 28%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 42%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 965 of the 2,309 delay minutes reported here. The split is drawn from 2,309 delay minutes reported on DL 1137.
Cancellations sit at 1.98% against a national 1.89%, which is ordinary. Diversions add another 0.79%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.5% 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 853 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 1137 is not only a ALB to ATL flight. It also flew ATL to ALB (253 flights, 85.9% 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. 253 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| ATL to ALBthin sample | 253 | 85.9% | 39 min | 1.98% | A |
What to do with this
Booking DL 1137
For a booking, read DL 1137 as 81.3% on time with 1.98% cancelled over 253 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ALB to ATL, every carrier and departure
- ATL to ALB, the return direction
- Delta Air Lines 2429 on the same route90.1%
- Hartsfield-Jackson Atlanta International (ATL) 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.