Flight number record

DL 699

Delta Air Lines · New York to Seattle

Route: JFK → SEA
Departs: 07:00
Flights: 365
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 699, check with Delta Air Lines.

DL 699 sits in the middle of the pack with a C−. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land roughly 45 minutes behind schedule. That rests on 365 flights, with a median arrival 3 minutes early.

On time

73.5%

Arrivals under 15 minutes late, of 351 completed flights

Avg delay

43 min

Across delayed arrivals only, not all flights

Cancelled

3.01%

National rate is 1.89%

1 hour+ late

4.3%

National rate is 8.3%

These figures cover 365 flights between September 2025 and August 2026. The median arrival is 3 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 699 flies

DL 699 flies JFK to SEA without a single fixed slot. Its most common scheduled departure was 07:00, used on 158 of 365 flights, with 07:05 (59 flights) and 07:55 (37 flights) next.

Departs 07:00158 flights43.3%
Departs 07:0559 flights16.2%
Departs 07:5537 flights10.1%

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 699 runs 16 points worse at 73.5%. 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 699 next to JFK to SEA

Every carrier on JFK to SEA combined arrived on time 69.5% of the time across 2,906 flights, so DL 699 is 4 points ahead of it. Delta flew 1,339 flights on the same city pair under all its flight numbers, including this one, and those ran 71.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 8 points.

DL 699 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 699	365	73.5%	43 min	3.01%	C−
All Delta Air Lines on JFK–SEA	1,339	71.4%	60 min	3.21%	C−
All carriers on JFK–SEA	2,906	69.5%	65 min	3.44%	C−
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 699 quarter by quarter

DL 699 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jan–Mar 2026 at 63.1%, a swing of 27 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 flights90.0%
Oct–Dec 202592 flights67.8%
Jan–Mar 202690 flights63.1%
Apr–Jun 202691 flights78.9%
Jul–Sep 202662 flights80.0%

Scale runs 55% to 95%.

By weekday, DL 699 ranged from 70.8% on Sunday to 76.5% on Wednesday. With about 52 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late DL 699 runs when it is late

DL 699 often beats the schedule: 111 of 351 completed flights, 32%, arrived 15 minutes or more early. The 93 late arrivals split 46 under half an hour, 32 between 30 and 60 minutes, and 15 an hour or more.

15+ min early111 flights31.6%
Within 15 min147 flights41.9%
15–29 min late46 flights13.1%
30–59 min late32 flights9.1%
1–2 hours late9 flights2.6%
2+ hours late6 flights1.7%

Scale runs 0% to 100%.

Share of 351 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 28 departures that left 15 minutes late or more, only 3 made it up before arrival. In the other direction, 68 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 699

The latest arrival of the period was on 12 May 2026, 4 hours 4 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.

The latest arrivals of DL 699 in the period
Date	Arrived late by	Largest filed cause
12 May 2026	4 hours 4 minutes	Carrier
7 July 2026	3 hours 56 minutes	Extreme weather
25 February 2026	3 hours 38 minutes	Extreme weather
22 July 2026	2 hours 30 minutes	Carrier
31 August 2026	2 hours 3 minutes	Carrier

Delay causes

Why DL 699 runs late

National Airspace System accounts for 54% of the 4,040 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
54%
Carrier
30%
Extreme weather
12%
Late-arriving aircraft
3%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 4,040 delay minutes reported on DL 699.

Cancellations run at 3.01%, against 1.89% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.3% 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 2,422 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 365 flights under DL 699 in the data flew JFK 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. 365 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 699

For a booking, the cancellation rate is the figure to plan around on DL 699: 3.01% of its 365 scheduled flights did not operate. A late arrival costs roughly 45 minutes, but a cancellation costs the day, so leave a later option open.

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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures