Historical on-time performance
Las Vegas to Portland
763 miData through May 2026Source: US DOT · BTS
Flights on LAS–PDX arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 2,832 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Spirit AirlinesOn-time86%Medianon timep9020 minCancel0.6%Flights159
- Alaska AirlinesbestOn-time82%Medianon timep9030 minCancel0.7%Flights1,523
- Southwest AirlinesOn-time73%Medianon timep9050 minCancel0.3%Flights1,150
Why flights run late
Delay causes
- Airline32%
- Weather3%
- Air traffic (NAS)9%
- Late aircraft56%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline64%
- Weather21%
- Air traffic (NAS)14%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 14 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAS → PDX
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 15 min · 2,729 flights
- Middays84% on time · p90 20 min · 2,021 flights
- Afternoons74% on time · p90 45 min · 1,976 flights
- Overnights70% on time · p90 55 min · 1,868 flights
- Evenings70% on time · p90 60 min · 2,057 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 84% on time.
- Saturdays84% on time · p90 20 min · 1,293 flights
- Tuesdays83% on time · p90 25 min · 1,353 flights
- Wednesdays83% on time · p90 25 min · 1,341 flights
- Mondays80% on time · p90 35 min · 1,675 flights
- Sundays74% on time · p90 45 min · 1,653 flights
- Thursdays74% on time · p90 45 min · 1,647 flights
- Fridays74% on time · p90 50 min · 1,689 flights
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