Flight number record
DL 330
Delta Air Lines · Washington to Atlanta
- Route
- DCA → ATL
- Departs
- 06:59
- Flights
- 342
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 330, check with Delta Air Lines.
DL 330 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 342 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 330's record is 16 points better than the US average of 77.3%. That gap is worth roughly 158 fewer late arrivals for every thousand flights.
Key figures
On time
93.1%
Arrivals under 15 minutes late, of 333 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
2.34%
National rate is 1.89%
1 hour+ late
2.7%
National rate is 8.3%
These figures cover 342 flights between September 2025 and August 2026. The median arrival is 11 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 330 flies
DL 330 flies DCA to ATL without a single fixed slot. Its most common scheduled departure was 06:59, used on 256 of 342 flights, with 07:00 (57 flights) next.
- Departs 06:59256 flights74.9%
- Departs 07:0057 flights16.7%
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 06:59 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 330 runs 4 points better at 93.1%. 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 330 next to DCA to ATL
Every carrier on DCA to ATL combined arrived on time 77.1% of the time across 6,799 flights, so DL 330 is 16 points ahead of it. Delta flew 3,850 flights on the same city pair under all its flight numbers, including this one, and those ran 79.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 330thin sample | 342 | 93.1% | 71 min | 2.34% | A |
| All Delta Air Lines on DCA–ATL | 3,850 | 79.2% | 88 min | 2.55% | B |
| All carriers on DCA–ATL | 6,799 | 77.1% | 79 min | 3.60% | B− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 330 quarter by quarter
Quarter by quarter DL 330 held fairly steady: 89.6% in Oct–Dec 2025, 96.2% in Jan–Mar 2026, 93.2% in Apr–Jun 2026 and 93.3% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202528 flights—
- Oct–Dec 202579 flights89.6%
- Jan–Mar 202685 flights96.2%
- Apr–Jun 202688 flights93.2%
- Jul–Sep 202662 flights93.3%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 330 ranged from 87.8% on Sunday to 96.1% on Friday. With about 49 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 330 runs when it is late
DL 330 often beats the schedule: 125 of 333 completed flights, 38%, arrived 15 minutes or more early. The 23 late arrivals split 5 under half an hour, 9 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early125 flights37.5%
- Within 15 min185 flights55.6%
- 15–29 min late5 flights1.5%
- 30–59 min late9 flights2.7%
- 1–2 hours late7 flights2.1%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 333 completed flights by arrival against schedule.
A late pushback is often recovered here: of 25 departures that left 15 minutes late or more, 10 still arrived on time. 8 flights left on time and still arrived late.
The worst days
Worst days for DL 330
The latest arrival of the period was on 13 September 2025, 5 hours 29 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 |
|---|---|---|
| 13 September 2025 | 5 hours 29 minutes | Carrier |
| 21 June 2026 | 3 hours 31 minutes | Carrier |
| 15 June 2026 | 1 hour 56 minutes | Carrier |
| 25 November 2025 | 1 hour 46 minutes | National Airspace System |
| 16 March 2026 | 1 hour 46 minutes | National Airspace System |
Delay causes
Why DL 330 runs late
Carrier accounts for 58% of the 1,630 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 39%National Airspace System
- 2%Extreme weather
- 1%Late-arriving aircraft
39% 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 635 minutes out of 1,630, against a national NAS share of 21%. The split is drawn from 1,630 delay minutes reported on DL 330.
Cancellations sit at 2.34% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.7% 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 547 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 342 flights under DL 330 in the data flew DCA to ATL. 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. 342 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 330
For a booking, read DL 330 as 93.1% on time with 2.34% cancelled over 342 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DCA to ATL, every carrier and departure
- ATL to DCA, the return direction
- Delta Air Lines 926 on the same route86.5%
- Delta Air Lines 380 on the same route77.2%
- Delta Air Lines 410 on the same route94.1%
- Delta Air Lines 850 on the same route63.4%
- Delta Air Lines 455 on the same route83.3%
- Delta Air Lines 360 on the same route69.3%
- Ronald Reagan Washington National (DCA) delay statistics
- 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
- Late aircraft, weather, or the airline: what actually causes US flight delays
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.