Flight number record

DL 444

Delta Air Lines · Atlanta to Seattle

Route: ATL → SEA
Departs: 07:25
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 444, check with Delta Air Lines.

DL 444 lands a B, 4 points 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 about 45 minutes on average. That is a workable record, not a spotless one. That rests on 363 flights, with a median arrival 8 minutes early.

On time

81.1%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

45 min

Across delayed arrivals only, not all flights

Cancelled

1.65%

National rate is 1.81%

1 hour+ late

4.2%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 2026. The median arrival is 8 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 444 flies

DL 444 flies ATL to SEA without a single fixed slot. Its most common scheduled departure was 07:25, used on 97 of 363 flights, with 07:45 (80 flights) and 07:30 (64 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:2597 flights26.7%
Departs 07:4580 flights22.0%
Departs 07:3064 flights17.6%

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 07:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 444 runs 8 points worse at 81.1%. 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 444 next to ATL to SEA

Every carrier on ATL to SEA combined arrived on time 77.8% of the time across 3,277 flights, so DL 444 is 3 points ahead of it. Delta flew 2,371 flights on the same city pair under all its flight numbers, including this one, and those ran 79.1% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 444 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 444thin sample	363	81.1%	45 min	1.65%	B
All Delta Air Lines on ATL–SEA	2,371	79.1%	53 min	0.46%	B+
All carriers on ATL–SEA	3,277	77.8%	54 min	0.64%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 444 quarter by quarter

DL 444 did not run the same all year. Its best quarter was Jul–Sep 2025 at 91.3% on time and its weakest Apr–Jun 2026 at 74.7%, a swing of 17 points on roughly 91 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 202592 flights91.3%
Oct–Dec 202591 flights80.7%
Jan–Mar 202689 flights77.4%
Apr–Jun 202691 flights74.7%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 444 did best on Friday at 89.8% on time and worst on Sunday at 74.5%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 444 runs late

One category carries most of the weight here. Carrier accounts for 58% of the 3,033 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
58%
National Airspace System
34%
Extreme weather
5%
Late-arriving aircraft
3%

34% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,026 minutes out of 3,033, against a national NAS share of 21%. The split is drawn from 3,033 delay minutes reported on DL 444.

Cancellations sit at 1.65% against a national 1.81%, which is ordinary. Diversions add another 0.55%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.2% 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 2,182 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 363 flights under DL 444 in the data flew ATL 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. 363 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 444

For a booking, read DL 444 as 81.1% on time with 1.65% cancelled over 363 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