PDX to LAS flight delays & on-time performance
Nonstop flights from Portland International Airport to Harry Reid International Airport · 763 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PDX or LAS 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 Las Vegas (LAS) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.5% were cancelled, and 5% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (84% on time); Frontier Airlines was the least (72%).
- Departures scheduled around 5am did best (96% on time); around 5pm did worst (74%).
- Tuesday was the most reliable day to fly (87% on time) and Friday the least (77%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from PDX to LAS?
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 |
|---|---|---|---|---|---|
| Spirit Airlines | 86% | 0.0% | 9 min | 4.3% | 70 |
| Alaska Airlines | 84% | 0.4% | 10 min | 4.1% | 1,557 |
| Southwest Airlines | 77% | 0.2% | 12 min | 4.5% | 1,150 |
| Frontier Airlines | 72% | 3.9% | 26 min | 9.9% | 179 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am96%237 flights
- 6am99%82 flights
- 7am89%369 flights
- 9am94%97 flights
- 10am78%545 flights
- 11am82%153 flights
- 12pm75%76 flights
- 1pm70%41 flights
- 2pm81%388 flights
- 3pm69%39 flights
- 4pm82%131 flights
- 5pm74%459 flights
- 6pm44%54 flights
- 7pm58%81 flights
- 8pm65%36 flights
- 9pm76%147 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%0.2% cancelled
- Tuesday87%0.3% cancelled
- Wednesday83%0.5% cancelled
- Thursday77%0.7% cancelled
- Friday77%0.6% cancelled
- Saturday87%0.6% cancelled
- Sunday78%0.6% 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 aircraft46%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion22%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)53%
- Extreme weather27%
- Air traffic control & airport congestion20%
- Security0%
PDX to LAS: common questions
- How often are PDX to LAS flights on time?
- 81% 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 Las Vegas cancelled?
- 0.5% of scheduled flights were cancelled (15 of 2,956).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 52 min behind schedule on average, and 4.6% of flights were an hour or more late.
- How long is taxi time at PDX?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to PDX — 79% 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 → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.