Salt Lake City (SLC) to Portland (PDX): On-Time Performance
Data through July 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 88% on-time against a national 78%.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 6.5
- last 12 months
- Duration
- 2h 1m
- scheduled
- Distance
- 630 mi
Best airline from SLC to PDX
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 90% | 7 min | 0.4% | 1,388 |
| Delta Air Lines | 87% | 8 min | 1.0% | 3,531 |
| Frontier Airlines | 76% | 23 min | 3.3% | 152 |
Monthly on-time trend
Best time to fly from SLC to PDX
Aim for departures around 10 a.m. (97% on-time); avoid 7 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 9 min |
| Tuesday | 89% | 7 min |
| Wednesdaybest | 90% | 6 min |
| Thursday | 87% | 8 min |
| Friday | 86% | 9 min |
| Saturday | 87% | 9 min |
| Sunday | 86% | 8 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations55%
- National airspace system9%
- Weather2%
Frequently asked questions
- How often are flights from SLC to PDX delayed?
- 12% of SLC–PDX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. 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 1,388 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 (97% on-time), while departures around 7 p.m. have the worst (73%). 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 12% of the time.
- How often are SLC to PDX flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, 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 5,117 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.