My trip
Plan a trip
Tell FlyerIntel where and when you are flying. It will show how that route actually performs at that time of day and on that day of the week, what both airports are doing right now, and when to get to the airport.
SEA → SLC
Seattle to Salt Lake City · departing 7:30 PM
SEA → SLC flights departing 6–9 PM arrive on time 79.7% of the time, against 83.2% across the whole day — your departure window is 3.5 points worse than average for this route.
Your slot
Add a date above to see how that hour has done on your day of the week, and what a nearby slot would change.
Other times on SEA → SLC
Time of day
On SEA → SLC, flights leaving 5–9 AM arrived on time 92.4% of the time, against 79.7% for those leaving 6–9 PM: 12.7 points more often.
- 5–9 AM92.4%
- 9 AM–12 PM82.2%
- 12–3 PM82.3%
- 3–6 PM76.4%
- 6–9 PM79.7%
- 9 PM–5 AM89.0%
Day of week
- Monday83.0%
- Tuesday85.9%
- Wednesday85.9%
- Thursday81.3%
- Friday81.2%
- Saturday83.7%
- Sunday81.8%
Bars start below the lowest figure so a real gap is visible; read the percentage, not the bar length. A time with too few flights to score is left unscored rather than guessed at.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · History describes what has happened on this route. It is not a prediction about your flight. Full route profile →
Which flight
Flights on SEA → SLC, the ones scheduled closest to 7:30 PM first.
Within 90 minutes of 7:30 PM, DL1239 (usually 7:30 PM) has the best record: 82.5% on time and 0.17% cancelled over 602 flights, against 83.2% on time for SEA → SLC as a whole.
| Flight | Usually departs | On time | Cancelled |
|---|---|---|---|
| DL1239Delta Air LinesLive map | 7:30 PM | 82.5% | 0.17% |
| OO3298SkyWest AirlinesLive map | 7:07 PM23 min away | 78.0% | 0.00% |
| DL1165Delta Air LinesLive map | 5:10 PM140 min away | 80.4% | 0.40% |
| AS669Alaska AirlinesLive map | 4:42 PM168 min away | 79.5% | 0.00% |
| DL1120Delta Air LinesLive map | 1:30 PM360 min away | 84.6% | 0.49% |
| AS733Alaska AirlinesLive map | 11:51 AM459 min away | 64.3% | 0.57% |
| DL1265Delta Air LinesLive map | 11:15 AM495 min away | 86.3% | 0.73% |
| DL1128Delta Air LinesLive map | 5:30 AM600 min away | 93.0% | 0.57% |
| DL1016Delta Air LinesLive map | 9:30 AM600 min away | 90.8% | 0.51% |
| DL2858Delta Air LinesLive map | 7:15 AM705 min away | 93.1% | 0.85% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · “Usually departs” is the scheduled time each flight number most often had over the period; airlines retime flights, so confirm the time on your booking. Flight numbers with fewer than 90 operations on this route are left out. This is history, not a forecast for your flight.
When to get to the airport
A starting point for SEA, not a promise about your day.
2h 0m before your 7:30 PM departure
How this was worked out
- It does not include your journey to the airport, parking, or a shuttle from a remote lot.
- International departures, and travel with children, checked pets or special assistance, need more time.
Both airports right now
Aviation weather is not currently a factor.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedAviation weather is not currently a factor.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedSource: NOAA Aviation Weather Center · Conditions describe the airfield, not your flight, and change quickly.
Who flies this route
Performance by the carrier that actually operates the flight.
| Carrier | Flights | On time | Cancelled | Median delay |
|---|---|---|---|---|
| Delta Air Lines | 7,026 | 87.6% | 0.37% | -9 min |
| Alaska Airlines | 4,029 | 77.8% | 1.27% | -3 min |
| SkyWest Airlines | 1,481 | 77.8% | 0.07% | -2 min |