Flight number record
DL 2905
Delta Air Lines · Seattle to Las Vegas
- Route
- SEA → LAS
- Departs
- 10:15
- Flights
- 360
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2905, check with Delta Air Lines.
DL 2905 lands a B+, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 55 minutes on average. That rests on 360 flights, with a median arrival 4 minutes early.
Set against the rest of the country, DL 2905's record is 6 points better than the US average of 77.3%. That gap is worth roughly 56 fewer late arrivals for every thousand flights.
Key figures
On time
82.9%
Arrivals under 15 minutes late, of 357 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.56%
National rate is 1.89%
1 hour+ late
4.2%
National rate is 8.3%
These figures cover 360 flights between September 2025 and August 2026. The median arrival is 4 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 2905 flies
DL 2905 flies SEA to LAS without a single fixed slot. Its most common scheduled departure was 10:15, used on 72 of 360 flights, with 09:45 (49 flights) and 10:45 (48 flights) next.
- Departs 10:1572 flights20.0%
- Departs 09:4549 flights13.6%
- Departs 10:4548 flights13.3%
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 10:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2905 runs level with that at 82.9%. 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 2905 next to SEA to LAS
Every carrier on SEA to LAS combined arrived on time 77.6% of the time across 5,620 flights, so DL 2905 is 5 points ahead of it. Delta flew 1,748 flights on the same city pair under all its flight numbers, including this one, and those ran 81.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2905thin sample | 360 | 82.9% | 55 min | 0.56% | B+ |
| All Delta Air Lines on SEA–LAS | 1,748 | 81.3% | 54 min | 1.09% | B |
| All carriers on SEA–LAS | 5,620 | 77.6% | 56 min | 0.93% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2905 quarter by quarter
DL 2905 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 78.7%, a swing of 21 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 202530 flights100.0%
- Oct–Dec 202591 flights78.9%
- Jan–Mar 202690 flights78.7%
- Apr–Jun 202691 flights86.7%
- Jul–Sep 202658 flights81.0%
Scale runs 70% to 100%.
By weekday, DL 2905 did best on Wednesday at 92.3% on time and worst on Saturday at 77.1%. Each day rests on about 51 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2905 runs when it is late
The 61 late arrivals split 28 under half an hour, 18 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early54 flights15.1%
- Within 15 min242 flights67.8%
- 15–29 min late28 flights7.8%
- 30–59 min late18 flights5.0%
- 1–2 hours late10 flights2.8%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 357 completed flights by arrival against schedule.
8 of 50 late departures made up the time and arrived on time, 16% of them. In the other direction, 19 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 LAS.
The worst days
Worst days for DL 2905
The latest arrival of the period was on 16 April 2026, 4 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 April 2026 | 4 hours 22 minutes | Carrier |
| 11 October 2025 | 3 hours 52 minutes | Carrier |
| 17 March 2026 | 3 hours 43 minutes | Carrier |
| 30 May 2026 | 3 hours 37 minutes | Carrier |
| 4 January 2026 | 2 hours 17 minutes | Carrier |
Delay causes
Why DL 2905 runs late
Carrier accounts for 61% of the 3,339 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 26%National Airspace System
- 13%Late-arriving aircraft
- 0%Extreme weather
The largest share of delay minutes, 61%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,028 of the 3,339 delay minutes reported here. The split is drawn from 3,339 delay minutes reported on DL 2905.
Cancellations are rare at 0.56%, below the national 1.89% 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 4.2% 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 867 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.
The same number turns up on one other city pair in the data, including LAS to SEA (211), but none flew often enough under DL 2905 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to LAS only.
One caution: this is a thin sample. 360 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 2905
For a booking, read DL 2905 as 82.9% on time with 0.56% cancelled over 360 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to LAS, every carrier and departure
- LAS to SEA, the return direction
- Delta Air Lines 2922 on the same route91.1%
- Delta Air Lines 2880 on the same route80.1%
- Delta Air Lines 2949 on the same route78.9%
- Alaska Airlines 738 on the same route78.3%
- Alaska Airlines 478 on the same route73.3%
- Alaska Airlines 704 on the same route84.2%
- Seattle-Tacoma International (SEA) delay statistics
- Harry Reid International (LAS) 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
- Worst months to fly in the US, ranked by the data
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.