Flight number record

DL 307

Delta Air Lines · Detroit to Honolulu

Route: DTW → HNL
Departs: 10:35
Flights: 289
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 307, check with Delta Air Lines.

DL 307 lands a B+, about a point better than the national rate of 77.6%. 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 is a workable record, not a spotless one. That rests on 289 flights, with a median arrival 5 minutes early.

On time

78.8%

Arrivals under 15 minutes late, of 288 completed flights

Avg delay

90 min

Across delayed arrivals only, not all flights

Cancelled

0.35%

National rate is 1.81%

1 hour+ late

7.3%

National rate is 8.1%

These figures cover 289 flights between July 2025 and June 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.

Schedule

When DL 307 flies

DL 307 flies DTW to HNL without a single fixed slot. Its most common scheduled departure was 10:35, used on 58 of 289 flights, with 10:50 (41 flights) and 10:45 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:3558 flights20.1%
Departs 10:5041 flights14.2%
Departs 10:4540 flights13.8%

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 10:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 307 runs 5 points worse at 78.8%. 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 307 next to DTW to HNL

Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 3 points.

DL 307 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 307thin sample	289	78.8%	90 min	0.35%	B+
All Delta Air Lines on DTW–HNLthin sample	289	78.8%	90 min	0.35%	B+
All carriers on DTW–HNLthin sample	289	78.8%	90 min	0.35%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 307 quarter by quarter

DL 307 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.6% on time and its weakest Oct–Dec 2025 at 66.0%, a swing of 28 points on roughly 72 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 202578 flights93.6%
Oct–Dec 202548 flights66.0%
Jan–Mar 202672 flights66.7%
Apr–Jun 202691 flights82.4%

Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 307 ranged from 73.7% on Thursday to 84.4% on Sunday. With about 41 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 307 runs late

One category carries most of the weight here. Carrier accounts for 75% of the 5,458 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
75%
National Airspace System
18%
Extreme weather
5%
Late-arriving aircraft
2%

The largest share of delay minutes, 75%, 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 4,110 of the 5,458 delay minutes reported here. The split is drawn from 5,458 delay minutes reported on DL 307.

Cancellations are rare at 0.35%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

7.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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.

At 4,475 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 ATL to GSP (1), but none flew often enough under DL 307 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to HNL only.

One caution: this is a thin sample. 289 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 307

For a booking, read DL 307 as 78.8% on time with 0.35% cancelled over 289 flights. Those are rates from the past twelve months, not a forecast for any particular 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