Flight number record
DL 328
Delta Air Lines · Seattle to Orlando
- Route
- SEA → MCO
- Departs
- 08:50
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 328, check with Delta Air Lines.
DL 328 sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 365 flights, with a median arrival right on schedule.
Key figures
On time
74.8%
Arrivals under 15 minutes late, of 353 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
2.19%
National rate is 1.89%
1 hour+ late
7.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When DL 328 flies
DL 328 flies SEA to MCO without a single fixed slot. Its most common scheduled departure was 08:50, used on 118 of 365 flights, with 08:45 (96 flights) next.
- Departs 08:50118 flights32.3%
- Departs 08:4596 flights26.3%
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 08:50 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 328 runs 9 points worse at 74.8%. 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 328 next to SEA to MCO
Every carrier on SEA to MCO combined arrived on time 82.1% of the time across 1,818 flights, so DL 328 is 7 points behind it. Delta flew 719 flights on the same city pair under all its flight numbers, including this one, and those ran 79.7% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 328 | 365 | 74.8% | 71 min | 2.19% | C |
| All Delta Air Lines on SEA–MCO | 719 | 79.7% | 58 min | 1.39% | B |
| All carriers on SEA–MCO | 1,818 | 82.1% | 49 min | 0.72% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 328 quarter by quarter
DL 328 did not run the same all year. Its best quarter was Oct–Dec 2025 at 79.8% on time and its weakest Jul–Sep 2026 at 66.7%, a swing of 13 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 flights76.7%
- Oct–Dec 202592 flights79.8%
- Jan–Mar 202690 flights71.4%
- Apr–Jun 202691 flights77.8%
- Jul–Sep 202662 flights66.7%
Scale runs 60% to 85%.
By weekday, DL 328 did best on Friday at 83.7% on time and worst on Sunday at 68.0%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 328 runs when it is late
The 89 late arrivals split 38 under half an hour, 23 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early71 flights20.1%
- Within 15 min193 flights54.7%
- 15–29 min late38 flights10.8%
- 30–59 min late23 flights6.5%
- 1–2 hours late10 flights2.8%
- 2+ hours late18 flights5.1%
Scale runs 0% to 100%.
Share of 353 completed flights by arrival against schedule.
9 of 48 late departures made up the time and arrived on time, 19% of them. In the other direction, 50 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 MCO.
The worst days
Worst days for DL 328
The latest arrival of the period was on 29 December 2025, 5 hours 33 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 December 2025 | 5 hours 33 minutes | Carrier |
| 25 February 2026 | 5 hours 1 minute | Carrier |
| 7 January 2026 | 4 hours 57 minutes | Carrier |
| 13 March 2026 | 4 hours 10 minutes | Extreme weather |
| 10 December 2025 | 3 hours 51 minutes | Carrier |
Delay causes
Why DL 328 runs late
Carrier accounts for 63% of the 6,281 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Carrier
- 33%National Airspace System
- 2%Extreme weather
- 2%Late-arriving aircraft
The largest share of delay minutes, 63%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,981 of the 6,281 delay minutes reported here. The split is drawn from 6,281 delay minutes reported on DL 328.
Cancellations sit at 2.19% against a national 1.89%, which is ordinary. Diversions add another 1.10%.
Connections and routes
What a delay on this flight costs
7.9% 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 a little over an hour, which a normal layover absorbs.
At 2,554 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
DL 328 is not only a SEA to MCO flight. It also flew MCO to SEA (318 flights, 68.2% 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. 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MCO to SEAthin sample | 318 | 68.2% | 66 min | 1.89% | C |
What to do with this
Booking DL 328
For a booking, DL 328 is one of the weaker ways to fly SEA to MCO: 7 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- SEA to MCO, every carrier and departure
- MCO to SEA, the return direction
- Alaska Airlines 420 on the same route82.1%
- Delta Air Lines 448 on the same route84.7%
- Seattle-Tacoma International (SEA) delay statistics
- Orlando International (MCO) 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.