Flight number record

DL 2874

Delta Air Lines · Salt Lake City to Seattle

Route: SLC → SEA
Departs: 07:45
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2874, check with Delta Air Lines.

DL 2874 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 roughly 55 minutes. That rests on 365 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 2874's record is 14 points better than the US average of 77.6%. That gap is worth roughly 142 fewer late arrivals for every thousand flights.

On time

91.8%

Arrivals under 15 minutes late, of 364 completed flights

Avg delay

54 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

3.0%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 10 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 2874 flies

DL 2874 flies SLC to SEA without a single fixed slot. Its most common scheduled departure was 07:45, used on 131 of 365 flights, with 07:50 (54 flights) and 07:55 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:45131 flights35.9%
Departs 07:5054 flights14.8%
Departs 07:5549 flights13.4%

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 07:45 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2874 runs 3 points better at 91.8%. 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 2874 next to SLC to SEA

Every carrier on SLC to SEA combined arrived on time 80.2% of the time across 4,108 flights, so DL 2874 is 12 points ahead of it. Delta flew 2,222 flights on the same city pair under all its flight numbers, including this one, and those ran 83.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 10 points.

DL 2874 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2874	365	91.8%	54 min	0.27%	A+
All Delta Air Lines on SLC–SEA	2,222	83.3%	54 min	0.54%	B+
All carriers on SLC–SEA	4,108	80.2%	53 min	0.97%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2874 quarter by quarter

Quarter by quarter DL 2874 held fairly steady: 90.2% in Jul–Sep 2025, 90.2% in Oct–Dec 2025, 93.3% in Jan–Mar 2026 and 93.4% in Apr–Jun 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights90.2%
Oct–Dec 202592 flights90.2%
Jan–Mar 202690 flights93.3%
Apr–Jun 202691 flights93.4%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2874 ranged from 86.5% on Sunday to 98.1% on Friday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2874 runs late

One category carries most of the weight here. Carrier accounts for 66% of the 1,606 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
66%
National Airspace System
20%
Late-arriving aircraft
10%
Extreme weather
4%

The largest share of delay minutes, 66%, 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 1,057 of the 1,606 delay minutes reported here. The split is drawn from 1,606 delay minutes reported on DL 2874.

Cancellations are rare at 0.27%, 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

Badly late arrivals are rare here: only 3.0% 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.

The 689 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 365 flights under DL 2874 in the data flew SLC 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 2874

For a booking, DL 2874 has one of the better records a US domestic flight can show: 91.8% on time and 0.27% 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