Historical on-time performance
Portland to Las Vegas
762 miData through May 2026Source: US DOT · BTS
Flights on PDX–LAS arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 2,831 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Spirit AirlinesOn-time84%Medianon timep9025 minCancel0.6%Flights159
- Alaska AirlinesbestOn-time83%Medianon timep9025 minCancel0.5%Flights1,522
- Southwest AirlinesOn-time78%Medianon timep9030 minCancel0.2%Flights1,150
Why flights run late
Delay causes
- Airline27%
- Weather0%
- Air traffic (NAS)26%
- Late aircraft46%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline64%
- Weather9%
- Air traffic (NAS)27%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 11 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 PDX → LAS
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 — 92% on time.
- Mornings92% on time · p90 10 min · 3,007 flights
- Middays79% on time · p90 30 min · 2,699 flights
- Afternoons77% on time · p90 40 min · 1,705 flights
- Overnights74% on time · p90 50 min · 1,137 flights
- Evenings74% on time · p90 50 min · 2,073 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 86% on time.
- Tuesdays86% on time · p90 15 min · 1,342 flights
- Saturdays86% on time · p90 20 min · 1,284 flights
- Wednesdays84% on time · p90 20 min · 1,328 flights
- Mondays81% on time · p90 30 min · 1,674 flights
- Sundays79% on time · p90 40 min · 1,659 flights
- Thursdays78% on time · p90 35 min · 1,650 flights
- Fridays76% on time · p90 45 min · 1,684 flights
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