Flight number record
DL 2447
Delta Air Lines · Seattle to Phoenix
- Route
- SEA → PHX
- Departs
- 09:55
- Flights
- 312
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2447, check with Delta Air Lines.
DL 2447 lands a B, 2 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 an hour and a half on average. That rests on 312 flights, with a median arrival 5 minutes early.
Key figures
On time
78.9%
Arrivals under 15 minutes late, of 303 completed flights
Avg delay
92 min
Across delayed arrivals only, not all flights
Cancelled
1.28%
National rate is 1.89%
1 hour+ late
7.6%
National rate is 8.3%
These figures cover 312 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 2447 flies
DL 2447 flies SEA to PHX without a single fixed slot. Its most common scheduled departure was 09:55, used on 90 of 312 flights, with 09:45 (57 flights) and 20:30 (56 flights) next.
- Departs 09:5590 flights28.8%
- Departs 09:4557 flights18.3%
- Departs 20:3056 flights17.9%
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 09:55 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2447 runs 5 points worse at 78.9%. 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 2447 next to SEA to PHX
Every carrier on SEA to PHX combined arrived on time 78.2% of the time across 7,205 flights, so DL 2447 is about level with it. Delta flew 1,768 flights on the same city pair under all its flight numbers, including this one, and those ran 80.9% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2447thin sample | 312 | 78.9% | 92 min | 1.28% | B |
| All Delta Air Lines on SEA–PHX | 1,768 | 80.9% | 67 min | 0.96% | B+ |
| All carriers on SEA–PHX | 7,205 | 78.2% | 57 min | 0.74% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2447 quarter by quarter
DL 2447 did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.5% on time and its weakest Oct–Dec 2025 at 73.1%, a swing of 11 points on roughly 78 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 flights—
- Oct–Dec 202580 flights73.1%
- Jan–Mar 202683 flights76.8%
- Apr–Jun 202658 flights84.5%
- Jul–Sep 202661 flights76.8%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2447 did best on Wednesday at 93.2% on time and worst on Monday at 69.8%. Each day rests on about 45 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2447 runs when it is late
The 64 late arrivals split 23 under half an hour, 18 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early71 flights23.4%
- Within 15 min168 flights55.4%
- 15–29 min late23 flights7.6%
- 30–59 min late18 flights5.9%
- 1–2 hours late11 flights3.6%
- 2+ hours late12 flights4.0%
Scale runs 0% to 100%.
Share of 303 completed flights by arrival against schedule.
14 of 64 late departures made up the time and arrived on time, 22% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for DL 2447
The latest arrival of the period was on 23 April 2026, 10 hours 21 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 |
|---|---|---|
| 23 April 2026 | 10 hours 21 minutes | Carrier |
| 10 March 2026 | 9 hours 37 minutes | Carrier |
| 6 November 2025 | 9 hours 8 minutes | Carrier |
| 13 March 2026 | 5 hours 46 minutes | Extreme weather |
| 8 December 2025 | 5 hours 30 minutes | Carrier |
Delay causes
Why DL 2447 runs late
Carrier accounts for 66% of the 5,883 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Carrier
- 21%Late-arriving aircraft
- 8%National Airspace System
- 6%Extreme weather
The largest share of delay minutes, 66%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,866 of the 5,883 delay minutes reported here. The split is drawn from 5,883 delay minutes reported on DL 2447.
Cancellations sit at 1.28% against a national 1.89%, which is ordinary. Diversions add another 1.60%.
Connections and routes
What a delay on this flight costs
7.6% 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.
The 1,107 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.
The same number turns up on one other city pair in the data, including PHX to SEA (188), but none flew often enough under DL 2447 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to PHX only.
One caution: this is a thin sample. 312 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 2447
For a booking, read DL 2447 as 78.9% on time with 1.28% cancelled over 312 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to PHX, every carrier and departure
- PHX to SEA, the return direction
- Delta Air Lines 2419 on the same route89.8%
- Alaska Airlines 700 on the same route78.4%
- Delta Air Lines 2698 on the same route73.7%
- Alaska Airlines 744 on the same route74.7%
- Alaska Airlines 632 on the same route74.0%
- Delta Air Lines 2442 on the same route80.4%
- Seattle-Tacoma International (SEA) delay statistics
- Phoenix Sky Harbor International (PHX) 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
- The best day of the week to fly, and why it is the second lever
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.