Flight profile · Delta Air Lines
DL1238
Salt Lake City (SLC) to Portland (PDX) · scheduled 5:10 PM – 6:08 PM
How DL1238 performs
325 operations, 2024-06-07 to 2026-06-26.
DL1238 arrived on time 85.6% of the time, against 87.5% for all SLC → PDX flights — this specific departure is 2.0 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 1.5 points worse.
Source: US DOT Bureau of Transportation Statistics · 325 operations between 2024-06-07 to 2026-06-26
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1238 | 85.6% | 1.85% | -7 min | 5.0% | 325 |
| Delta Air Lines on SLC → PDX | 87.1% | 0.63% | -8 min | 3.7% | 5,064 |
| All SLC → PDX flights | 87.5% | 0.62% | -8 min | 3.6% | 7,137 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-26
Other routes DL1238 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| PDX→SLC Portland to Salt Lake City | 2024-06-07 – 2026-06-26 | 250 | 90.9% |
| SEA→SLC Seattle to Salt Lake City | 2026-02-14 – 2026-03-07 | 5 | — |
| CHA→ATL Chattanooga to Atlanta | 2026-01-06 – 2026-02-11 | 30 | — |
| BOS→MSP Boston to Minneapolis | 2025-06-09 – 2025-12-19 | 179 | 89.9% |
| RSW→ATL Fort Myers to Atlanta | 2025-01-06 – 2025-03-08 | 62 | — |
| ATL→AGS Atlanta to Augusta | 2024-11-16 – 2024-12-14 | 5 | — |
| DEN→SLC Denver to Salt Lake City | 2024-09-14 – 2024-10-05 | 4 | — |
| CVG→SEA Cincinnati / Covington to Seattle | 2024-05-07 – 2024-06-06 | 31 | — |
| MSP→FAR Minneapolis to Fargo | 2024-04-09 – 2024-05-06 | 28 | — |
| SAT→SLC San Antonio to Salt Lake City | 2023-07-01 – 2024-04-08 | 221 | 94.5% |
| GRR→ATL Grand Rapids to Atlanta | 2024-01-08 – 2024-03-09 | 62 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1238 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 325 records of DL1238 operating SLC → PDX, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.