Flight number record
DL 372
Delta Air Lines · Nashville to Seattle
- Route
- BNA → SEA
- Departs
- 07:00
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 372, check with Delta Air Lines.
DL 372 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 55 minutes on average. That rests on 364 flights, with a median arrival 5 minutes early.
Set against the rest of the country, DL 372's record is 6 points better than the US average of 77.3%. That gap is worth roughly 60 fewer late arrivals for every thousand flights.
Key figures
On time
83.3%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.89%
1 hour+ late
3.6%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 5 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 372 flies
DL 372 flies BNA to SEA without a single fixed slot. Its most common scheduled departure was 07:00, used on 188 of 364 flights, with 07:35 (87 flights) next.
- Departs 07:00188 flights51.6%
- Departs 07:3587 flights23.9%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 372 runs 6 points worse at 83.3%. 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 372 next to BNA to SEA
Every carrier on BNA to SEA combined arrived on time 72.4% of the time across 1,481 flights, so DL 372 is 11 points ahead of it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 372thin sample | 364 | 83.3% | 55 min | 1.10% | B |
| All Delta Air Lines on BNA–SEA | 516 | 79.8% | 60 min | 1.16% | B |
| All carriers on BNA–SEA | 1,481 | 72.4% | 49 min | 1.15% | C |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 372 quarter by quarter
DL 372 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Oct–Dec 2025 at 76.9%, a swing of 20 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 flights96.7%
- Oct–Dec 202591 flights76.9%
- Jan–Mar 202690 flights80.7%
- Apr–Jun 202691 flights88.9%
- Jul–Sep 202662 flights82.0%
Scale runs 70% to 100%.
By weekday, DL 372 ranged from 78.8% on Tuesday to 90.4% on Wednesday. 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 372 runs when it is late
DL 372 often beats the schedule: 99 of 360 completed flights, 28%, arrived 15 minutes or more early. Most of the lateness is short. 31 of the 60 late arrivals were under half an hour behind, and 13 reached an hour or more.
- 15+ min early99 flights27.5%
- Within 15 min201 flights55.8%
- 15–29 min late31 flights8.6%
- 30–59 min late16 flights4.4%
- 1–2 hours late5 flights1.4%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
5 of 28 late departures made up the time and arrived on time, 18% of them. In the other direction, 37 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 SEA.
The worst days
Worst days for DL 372
The latest arrival of the period was on 9 October 2025, 5 hours 40 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 |
|---|---|---|
| 9 October 2025 | 5 hours 40 minutes | Carrier |
| 15 December 2025 | 4 hours 50 minutes | Carrier |
| 30 November 2025 | 3 hours 16 minutes | Carrier |
| 13 March 2026 | 2 hours 38 minutes | National Airspace System |
| 17 August 2026 | 2 hours 31 minutes | Carrier |
Delay causes
Why DL 372 runs late
Carrier accounts for 58% of the 3,274 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 38%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 58%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,890 of the 3,274 delay minutes reported here. The split is drawn from 3,274 delay minutes reported on DL 372.
Cancellations sit at 1.10% 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 3.6% 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.
At 1,978 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.
Every one of the 364 flights under DL 372 in the data flew BNA to SEA. 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. 364 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 372
For a booking, read DL 372 as 83.3% on time with 1.10% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BNA to SEA, every carrier and departure
- SEA to BNA, the return direction
- Nashville International (BNA) delay statistics
- Seattle-Tacoma International (SEA) 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.