PDX to SLC flight delays & on-time performance
Nonstop flights from Portland International Airport to Salt Lake City International Airport · 630 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PDX or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Portland (PDX) to Salt Lake City (SLC) arrived on time 89% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.1% were cancelled, and 3% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (91% on time); SkyWest Airlines was the least (86%).
- Departures scheduled around 5am did best (98% on time); around 7am did worst (84%).
- Tuesday was the most reliable day to fly (94% on time) and Sunday the least (87%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from PDX to SLC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 94% | 0.0% | 3 min | 2.1% | 47 |
| Delta Air Lines | 91% | 1.5% | 6 min | 3.2% | 1,699 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 86% | 0.2% | 10 min | 3.9% | 593 |
| Frontier Airlines | 63% | 0.0% | 32 min | 11.4% | 35 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am98%365 flights
- 7am84%193 flights
- 9am92%273 flights
- 10am91%202 flights
- 1pm87%364 flights
- 2pm93%136 flights
- 3pm88%25 flights
- 5pm85%512 flights
- 7pm87%278 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday88%0.6% cancelled
- Tuesday94%1.2% cancelled
- Wednesday92%0.6% cancelled
- Thursday88%0.6% cancelled
- Friday89%0.8% cancelled
- Saturday87%1.3% cancelled
- Sunday87%2.6% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)36%
- Air traffic control & airport congestion8%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)92%
- Air traffic control & airport congestion8%
- Extreme weather0%
- Security0%
PDX to SLC: common questions
- How often are PDX to SLC flights on time?
- 89% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Portland to Salt Lake City cancelled?
- 1.1% of scheduled flights were cancelled (26 of 2,374).
- How long are typical delays?
- Across all flights the average arrival delay was 7 min (early arrivals count as zero). Flights that were late arrived 62 min behind schedule on average, and 3.5% of flights were an hour or more late.
- How long is taxi time at PDX?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to PDX — 89% on time
More flights from Portland
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PDX → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.