Flight number record
DL 1437
Delta Air Lines · Richmond to Atlanta
- Route
- RIC → ATL
- Departs
- 15:19
- Flights
- 298
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1437, check with Delta Air Lines.
DL 1437 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 298 flights, with a median arrival 14 minutes early.
Set against the rest of the country, DL 1437's record is 11 points better than the US average of 77.3%. That gap is worth roughly 105 fewer late arrivals for every thousand flights.
Key figures
On time
87.8%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
93 min
Across delayed arrivals only, not all flights
Cancelled
0.67%
National rate is 1.89%
1 hour+ late
5.7%
National rate is 8.3%
These figures cover 298 flights between September 2025 and August 2026. The median arrival is 14 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 1437 flies
DL 1437 flies RIC to ATL without a single fixed slot. Its most common scheduled departure was 15:19, used on 43 of 298 flights.
- Departs 15:1943 flights14.4%
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 15:19 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 1437 runs 16 points better at 87.8%. 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 1437 next to RIC to ATL
Every carrier on RIC to ATL combined arrived on time 88.5% of the time across 2,668 flights, so DL 1437 is about level with it. Delta flew 2,599 flights on the same city pair under all its flight numbers, including this one, and those ran 89.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1437thin sample | 298 | 87.8% | 93 min | 0.67% | A+ |
| All Delta Air Lines on RIC–ATL | 2,599 | 89.2% | 91 min | 2.00% | A |
| All carriers on RIC–ATL | 2,668 | 88.5% | 93 min | 2.02% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1437 quarter by quarter
DL 1437 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jul–Sep 2026 at 72.6%, a swing of 24 points on roughly 75 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 flights96.7%
- Oct–Dec 202592 flights93.3%
- Jan–Mar 202628 flights—
- Apr–Jun 202686 flights90.7%
- Jul–Sep 202662 flights72.6%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1437 ranged from 81.4% on Friday to 91.9% on Saturday. With about 43 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1437 runs when it is late
DL 1437 often beats the schedule: 138 of 296 completed flights, 47%, arrived 15 minutes or more early. The 36 late arrivals split 3 under half an hour, 16 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early138 flights46.6%
- Within 15 min122 flights41.2%
- 15–29 min late3 flights1.0%
- 30–59 min late16 flights5.4%
- 1–2 hours late9 flights3.0%
- 2+ hours late8 flights2.7%
Scale runs 0% to 100%.
Share of 296 completed flights by arrival against schedule.
9 of 40 late departures made up the time and arrived on time, 23% of them. Only 5 left on time and still arrived late.
The worst days
Worst days for DL 1437
The latest arrival of the period was on 11 July 2026, 6 hours 33 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 July 2026 | 6 hours 33 minutes | National Airspace System |
| 18 June 2026 | 4 hours 54 minutes | National Airspace System |
| 8 November 2025 | 4 hours 17 minutes | Carrier |
| 1 June 2026 | 3 hours 47 minutes | Carrier |
| 17 July 2026 | 3 hours 47 minutes | National Airspace System |
Delay causes
Why DL 1437 runs late
National Airspace System accounts for 42% of the 3,363 delay minutes carriers reported here, and the remaining four split what is left.
- 42%National Airspace System
- 30%Late-arriving aircraft
- 27%Carrier
- 0%Extreme weather
42% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,422 minutes out of 3,363, against a national NAS share of 21%. The split is drawn from 3,363 delay minutes reported on DL 1437.
Cancellations are rare at 0.67%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
5.7% 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 an hour and a half, which a normal layover absorbs.
DL 1437 is not only a RIC to ATL flight. It also flew ATL to RIC (298 flights, 89.2% 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. 298 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 RICthin sample | 298 | 89.2% | 47 min | 0.67% | A+ |
What to do with this
Booking DL 1437
For a booking, DL 1437 has one of the better records a US domestic flight can show: 87.8% on time and 0.67% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- RIC to ATL, every carrier and departure
- ATL to RIC, the return direction
- Delta Air Lines 1415 on the same route90.8%
- Delta Air Lines 1460 on the same route91.6%
- Delta Air Lines 1402 on the same route90.3%
- Delta Air Lines 2650 on the same route90.1%
- Delta Air Lines 1462 on the same route93.5%
- 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.