SLC to PDX flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to Portland International Airport · 630 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or PDX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Salt Lake City (SLC) to Portland (PDX) arrived on time 89% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.1% were cancelled, and 4% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (89% on time); Delta Air Lines was the least (89%).
- Departures scheduled around 8am did best (93% on time); around 7pm did worst (76%).
- Tuesday was the most reliable day to fly (94% on time) and Sunday the least (85%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (55%).
Which airline is most on time from SLC to PDX?
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 | 98% | 0.0% | 1 min | 0.0% | 46 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 89% | 0.5% | 7 min | 3.4% | 596 |
| Delta Air Lines | 89% | 1.4% | 7 min | 3.6% | 1,698 |
| Frontier Airlines | 66% | 0.0% | 19 min | 14.3% | 35 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am89%206 flights
- 8am93%447 flights
- 11am89%385 flights
- 12pm90%153 flights
- 3pm88%423 flights
- 5pm88%246 flights
- 6pm83%31 flights
- 7pm76%108 flights
- 9pm85%102 flights
- 10pm89%262 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday87%0.8% cancelled
- Tuesday94%1.2% cancelled
- Wednesday90%0.3% cancelled
- Thursday88%0.6% cancelled
- Friday87%0.8% cancelled
- Saturday89%1.7% cancelled
- Sunday85%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.
- Airline (crew, maintenance, cleaning, fueling)55%
- Late-arriving aircraft33%
- Air traffic control & airport congestion9%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)89%
- Air traffic control & airport congestion11%
- Extreme weather0%
- Security0%
SLC to PDX: common questions
- How often are SLC to PDX 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 Salt Lake City to Portland cancelled?
- 1.1% of scheduled flights were cancelled (27 of 2,375).
- 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 56 min behind schedule on average, and 3.6% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PDX to SLC — 89% on time
More flights from Salt Lake City
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SLC → PDX, nonstop flights by US airlines that report to the DOT. How we calculate this.