Flight number record
DL 2998
Delta Air Lines · Salt Lake City to Seattle
- Route
- SLC → SEA
- Departs
- 22:45
- Flights
- 269
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2998, check with Delta Air Lines.
DL 2998 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 269 flights, with a median arrival 13 minutes early.
Set against the rest of the country, DL 2998's record is 13 points better than the US average of 77.3%. That gap is worth roughly 127 fewer late arrivals for every thousand flights.
Key figures
On time
90.0%
Arrivals under 15 minutes late, of 269 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
2.6%
National rate is 8.3%
These figures cover 269 flights between September 2025 and August 2026. The median arrival is 13 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When DL 2998 flies
DL 2998 flies SLC to SEA without a single fixed slot. Its most common scheduled departure was 22:45, used on 208 of 269 flights.
- Departs 22:45208 flights77.3%
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 22:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 2998 runs 20 points better at 90.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 2998 next to SLC to SEA
Every carrier on SLC to SEA combined arrived on time 79.9% of the time across 4,098 flights, so DL 2998 is 10 points ahead of it. Delta flew 2,234 flights on the same city pair under all its flight numbers, including this one, and those ran 82.7% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2998thin sample | 269 | 90.0% | 64 min | 0.00% | A+ |
| All Delta Air Lines on SLC–SEA | 2,234 | 82.7% | 53 min | 0.49% | B+ |
| All carriers on SLC–SEA | 4,098 | 79.9% | 55 min | 0.81% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2998 quarter by quarter
DL 2998 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.1% on time and its weakest Jul–Sep 2026 at 80.5%, a swing of 13 points on roughly 67 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 202512 flights—
- Oct–Dec 202554 flights88.9%
- Jan–Mar 202690 flights91.1%
- Apr–Jun 202672 flights93.1%
- Jul–Sep 202641 flights80.5%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
Arrival by arrival
How late DL 2998 runs when it is late
DL 2998 often beats the schedule: 121 of 269 completed flights, 45%, arrived 15 minutes or more early. Most of the lateness is short. 15 of the 27 late arrivals were under half an hour behind, and 7 reached an hour or more.
- 15+ min early121 flights45.0%
- Within 15 min121 flights45.0%
- 15–29 min late15 flights5.6%
- 30–59 min late5 flights1.9%
- 1–2 hours late5 flights1.9%
- 2+ hours late2 flights0.7%
Scale runs 0% to 100%.
Share of 269 completed flights by arrival against schedule.
A late pushback is often recovered here: of 39 departures that left 15 minutes late or more, 15 still arrived on time. Only 3 left on time and still arrived late.
The worst days
Worst days for DL 2998
The latest arrival of the period was on 14 December 2025, 11 hours 23 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.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 11 hours 23 minutes | Carrier |
| 13 August 2026 | 2 hours 28 minutes | Carrier |
| 21 July 2026 | 1 hour 29 minutes | Late-arriving aircraft |
| 27 July 2026 | 1 hour 22 minutes | Late-arriving aircraft |
| 7 June 2026 | 1 hour 21 minutes | Carrier |
Delay causes
Why DL 2998 runs late
Carrier accounts for 75% of the 1,738 delay minutes carriers reported here, and the remaining four split what is left.
- 75%Carrier
- 21%Late-arriving aircraft
- 4%National Airspace System
The largest share of delay minutes, 75%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,302 of the 1,738 delay minutes reported here. The split is drawn from 1,738 delay minutes reported on DL 2998.
Cancellations are rare at 0.00%, below the national 1.89% 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 2.6% 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.
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.
Every one of the 269 flights under DL 2998 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. 269 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 2998
For a booking, DL 2998 has one of the better records a US domestic flight can show: 90.0% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to SEA, every carrier and departure
- SEA to SLC, the return direction
- Delta Air Lines 2874 on the same route92.6%
- Delta Air Lines 2995 on the same route87.1%
- Delta Air Lines 2817 on the same route77.3%
- Delta Air Lines 871 on the same route80.3%
- Alaska Airlines 796 on the same route83.9%
- Delta Air Lines 2921 on the same route84.0%
- Salt Lake City International (SLC) delay statistics
- Seattle-Tacoma International (SEA) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- How to read this site: grades, sample sizes, and honest caveats
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 ; recomputed monthly. How this data is collected.