Flight number record
DL 1244
Delta Air Lines · Salt Lake City to Portland
- Route
- SLC → PDX
- Departs
- 15:00
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1244, check with Delta Air Lines.
DL 1244 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 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 255 flights, with a median arrival 10 minutes early.
Set against the rest of the country, DL 1244's record is 11 points better than the US average of 77.3%. That gap is worth roughly 105 fewer late arrivals for every thousand flights.
Key figures
On time
87.8%
Arrivals under 15 minutes late, of 254 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
0.39%
National rate is 1.89%
1 hour+ late
4.3%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 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.
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Schedule
When DL 1244 flies
DL 1244 flies SLC to PDX without a single fixed slot. Its most common scheduled departure was 15:00, used on 104 of 255 flights, with 15:10 (37 flights) and 15:24 (30 flights) next.
- Departs 15:00104 flights40.8%
- Departs 15:1037 flights14.5%
- Departs 15:2430 flights11.8%
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 15:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 1244 runs 16 points better at 87.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 1244 next to SLC to PDX
Every carrier on SLC to PDX combined arrived on time 87.9% of the time across 2,384 flights, so DL 1244 is about level with it. Delta flew 1,695 flights on the same city pair under all its flight numbers, including this one, and those ran 87.9% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1244thin sample | 255 | 87.8% | 52 min | 0.39% | A+ |
| All Delta Air Lines on SLC–PDX | 1,695 | 87.9% | 53 min | 1.42% | A |
| All carriers on SLC–PDX | 2,384 | 87.9% | 56 min | 1.13% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1244 quarter by quarter
DL 1244 did not run the same all year. Its best quarter was Jul–Sep 2026 at 93.5% on time and its weakest Apr–Jun 2026 at 82.4%, a swing of 11 points on roughly 85 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.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights88.8%
- Apr–Jun 202691 flights82.4%
- Jul–Sep 202662 flights93.5%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1244 did best on Tuesday at 94.4% on time and worst on Sunday at 81.1%. Each day rests on about 36 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1244 runs when it is late
DL 1244 often beats the schedule: 88 of 254 completed flights, 35%, arrived 15 minutes or more early. The 31 late arrivals split 9 under half an hour, 11 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early88 flights34.6%
- Within 15 min135 flights53.1%
- 15–29 min late9 flights3.5%
- 30–59 min late11 flights4.3%
- 1–2 hours late9 flights3.5%
- 2+ hours late2 flights0.8%
Scale runs 0% to 100%.
Share of 254 completed flights by arrival against schedule.
A late pushback is often recovered here: of 48 departures that left 15 minutes late or more, 20 still arrived on time. Only 3 left on time and still arrived late.
The worst days
Worst days for DL 1244
The latest arrival of the period was on 21 December 2025, 2 hours 26 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 |
|---|---|---|
| 21 December 2025 | 2 hours 26 minutes | Carrier |
| 29 May 2026 | 2 hours 9 minutes | Carrier |
| 29 January 2026 | 1 hour 47 minutes | Late-arriving aircraft |
| 20 June 2026 | 1 hour 34 minutes | Carrier |
| 19 July 2026 | 1 hour 26 minutes | Late-arriving aircraft |
Delay causes
Why DL 1244 runs late
Carrier accounts for 65% of the 1,612 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 26%Late-arriving aircraft
- 8%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 65%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,054 of the 1,612 delay minutes reported here. The split is drawn from 1,612 delay minutes reported on DL 1244.
Cancellations are rare at 0.39%, 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 4.3% 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.
The 630 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.
DL 1244 is not only a SLC to PDX flight. It also flew PDX to SLC (251 flights, 88.0% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 255 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| PDX to SLCthin sample | 251 | 88.0% | 54 min | 0.40% | A+ |
What to do with this
Booking DL 1244
For a booking, DL 1244 has one of the better records a US domestic flight can show: 87.8% on time and 0.39% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to PDX, every carrier and departure
- PDX to SLC, the return direction
- Delta Air Lines 1209 on the same route87.5%
- Delta Air Lines 1373 on the same route86.2%
- Delta Air Lines 1203 on the same route90.5%
- Salt Lake City International (SLC) delay statistics
- Portland International (PDX) 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.