Flight number record

DL 947

Delta Air Lines · Phoenix to Detroit

Route: PHX → DTW
Departs: 07:00
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 947, check with Delta Air Lines.

DL 947 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 349 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 947's record is 14 points better than the US average of 77.6%. That gap is worth roughly 138 fewer late arrivals for every thousand flights.

On time

91.4%

Arrivals under 15 minutes late, of 348 completed flights

Avg delay

84 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 2026. The median arrival is 9 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.

Schedule

When DL 947 flies

DL 947 flies PHX to DTW without a single fixed slot. Its most common scheduled departure was 07:00, used on 125 of 349 flights, with 06:00 (112 flights) and 06:10 (112 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00125 flights35.8%
Departs 06:00112 flights32.1%
Departs 06:10112 flights32.1%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 947 runs 2 points better at 91.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 947 next to PHX to DTW

Every carrier on PHX to DTW combined arrived on time 80.7% of the time across 2,426 flights, so DL 947 is 11 points ahead of it. Delta flew 1,331 flights on the same city pair under all its flight numbers, including this one, and those ran 84.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 10 points.

DL 947 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 947thin sample	349	91.4%	84 min	0.00%	A+
All Delta Air Lines on PHX–DTW	1,331	84.3%	82 min	0.68%	B+
All carriers on PHX–DTW	2,426	80.7%	81 min	0.78%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 947 quarter by quarter

Quarter by quarter DL 947 held fairly steady: 94.6% in Jul–Sep 2025, 92.5% in Oct–Dec 2025, 84.9% in Jan–Mar 2026 and 93.3% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights94.6%
Oct–Dec 202580 flights92.5%
Jan–Mar 202686 flights84.9%
Apr–Jun 202691 flights93.3%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 947 ranged from 87.5% on Sunday to 98.0% on Thursday. With about 50 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.

Delay causes

Why DL 947 runs late

One category carries most of the weight here. Carrier accounts for 82% of the 2,508 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
82%
National Airspace System
11%
Late-arriving aircraft
8%

The largest share of delay minutes, 82%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,049 of the 2,508 delay minutes reported here. The split is drawn from 2,508 delay minutes reported on DL 947.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.9% land an hour or more behind schedule, against 8.1% 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 1,671 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.

The same number turns up on one other city pair in the data, including LAS to ATL (16), but none flew often enough under DL 947 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PHX to DTW only.

One caution: this is a thin sample. 349 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 947

For a booking, DL 947 has one of the better records a US domestic flight can show: 91.4% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures