Salt Lake City (SLC) to Portland (PDX): On-Time Performance
Data through May 2026
Salt Lake City (SLC) to Portland (PDX) effectively runs on two schedules. In October 2024, 94% of arrivals were on time; in February 2025 that fell to 79% — a 15-point seasonal swing. Across the full period the route averages 87% on-time against a national 78%.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 6.6
- last 12 months
- Duration
- 2h 1m
- scheduled
- Distance
- 630 mi
Best airline from SLC to PDX
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 90% | 7 min | 0.4% | 1,284 |
| Delta Air Lines | 87% | 8 min | 0.8% | 3,385 |
| Frontier Airlines | 75% | 23 min | 3.6% | 165 |
Monthly on-time trend
Best time to fly from SLC to PDX
Aim for departures around 10 a.m. (94% on-time); avoid 7 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 10 min |
| Tuesday | 90% | 7 min |
| Wednesdaybest | 90% | 6 min |
| Thursday | 87% | 8 min |
| Friday | 85% | 9 min |
| Saturday | 88% | 9 min |
| Sunday | 85% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations56%
- National airspace system8%
- Weather2%
Frequently asked questions
- How often are flights from SLC to PDX delayed?
- 13% of SLC–PDX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 8 minutes.
- Which airline is most reliable from SLC to PDX?
- SkyWest Airlines has the best on-time record on this route at 90%, based on 1,284 flights. 3 airlines flew SLC–PDX frequently enough to compare in this period.
- What is the best time of day to fly from SLC to PDX?
- Departures around 10 a.m. have the best record (94% on-time), while departures around 7 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to PDX?
- The scheduled SLC–PDX flight time averages 2h 1m over 630 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are SLC to PDX flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to PDX?
- February 2025 was the roughest month in this dataset, with only 79% of arrivals on time. The best was October 2024 at 94%. If your dates are flexible, that 15-point gap is worth planning around.
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Based on 4,880 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.