Flight profile · Delta Air Lines
DL1373
Salt Lake City (SLC) to Portland (PDX) · scheduled 10:45 PM – 11:44 PM
How DL1373 performs
614 operations, April 2024 – August 2026.
Between its first and last recorded date on SLC → PDX, DL1373 averaged about 5 operations a week (614 in 875 days, cancelled ones included).
DL1373 arrived on time 86.3% of the time, against 87.4% for all SLC → PDX flights, so this departure is 1.1 percentage points worse than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 614 operations, April 2024 – August 2026 · If DL1373 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL1373 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL1373 | 86.3% | 0.00% | -7 min | 2.4% | 614 |
| Delta Air Lines on SLC → PDX | 86.9% | 0.71% | -8 min | 3.7% | 5,353 |
| All SLC → PDX flights | 87.4% | 0.66% | -8 min | 3.7% | 7,608 |
None of DL1373’s 614 operations was cancelled; the route as a whole cancels 0.66%.
Source: FlyerIntel analysis of US DOT BTS data · April 2024 – August 2026
Why DL1373 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for DL1373 on SLC → PDX. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering April 2024 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies DL1373 comes in late, and what that does to the departure.
The aircraft flying DL1373 came in 15 or more minutes late on 20% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Matched by tail number to the aircraft’s previous flight into SLC: 482 of 614 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| DL1373 | 20% |
| Network, same turn | 23% |
A long gap on the ground gives a late aircraft room to catch up before this flight pushes back.
The network row is every flight with a scheduled turn of 90 minutes to 3 hours. How often DL1373’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.
Source: US DOT Bureau of Transportation Statistics · Data covering April 2024 – August 2026
From pushback to gate
When it leaves SLC late, does that still matter by the time it reaches PDX?
DL1373 pushes back an average of 3.8 minutes late and reaches the gate at PDX an average of 1.8 minutes early. The 5.6 minutes between those two figures are slack the published schedule already carries, so on average a late pushback on this flight is made up before the gate. Its 17.2 minutes on the taxiways at SLC is about what any departure from the airport in that hour spends.
On arrival at PDX, DL1373 spends 6.1 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.0 minutes longer than a typical PDX arrival (5.1 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 16,790 SLC departures. Taxi-in is landing to gate, set against 193,821 arrivals at PDX. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · April 2024 – August 2026
The hour it leaves SLC
DL1373 has one departure time, 10:45 PM, so this is what that hour at SLC is worth.
On-time arrival rate. 16,790 departures from SLC are scheduled in the 10 PM–11 PM hour over the period, against 365,355 across the whole day.
DL1373 is scheduled out of SLC at 10:45 PM, in the 10 PM–11 PM bank. Departures from SLC in that hour arrive on time 83.0% of the time against 83.9% across the airport’s whole day, so the hour DL1373 leaves in is an ordinary one for SLC and explains nothing about its record either way.
Both airport figures cover every destination from SLC, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · April 2024 – August 2026 · Hours below 120 departures are not scored.
Other routes DL1373 has flown
Carriers reassign flight numbers. DL1373 also served these 12 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| DTW→PHL Detroit to Philadelphia | June 7, 2024 – January 3, 2026 | 134 | 66.2% |
| PHL→DTW Philadelphia to Detroit | June 7, 2024 – December 16, 2024 | 106 | 76.4% |
| ATL→CHA Atlanta to Chattanooga | November 8, 2024 | 1 | — |
| CHA→ATL Chattanooga to Atlanta | November 8, 2024 | 1 | — |
| MCI→BOS Kansas City to Boston | September 14, 2024 – October 5, 2024 | 4 | — |
| HSV→ATL Huntsville to Atlanta | June 8, 2024 – July 6, 2024 | 10 | — |
| PHX→SLC Phoenix to Salt Lake City | September 5, 2023 – June 6, 2024 | 156 | 97.4% |
| PDX→SLC Portland to Salt Lake City | April 9, 2024 – May 6, 2024 | 28 | — |
| SLC→LAS Salt Lake City to Las Vegas | March 10, 2024 – April 8, 2024 | 26 | — |
| GSO→ATL Greensboro to Atlanta | January 8, 2024 – March 9, 2024 | 62 | — |
| MSP→AUS Minneapolis to Austin | July 10, 2023 – September 4, 2023 | 48 | — |
| MSP→MCO Minneapolis to Orlando | July 1, 2023 – September 3, 2023 | 11 | — |
The figures above describe only SLC → PDX, the route DL1373 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
20 min late
against a median of 7 min early
Percentiles over 614 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering April 2024 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL1203 | Delta Air Lines | 91.6% | 11 min early | 608 |
| OO3497 | SkyWest Airlines | 90.0% | 8 min early | 686 |
| DL1244 | Delta Air Lines | 86.4% | 8 min early | 616 |
| DL1209 | Delta Air Lines | 86.4% | 6 min early | 814 |
| DL1373 this flight | Delta Air Lines | 86.3% | 7 min early | 614 |
Among all 5 departures on this route with at least 600 operations, DL1373 has the lowest on-time rate, 5.3 points behind the best. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 614 records of DL1373 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 reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed