Las Vegas to Portland — airline reliability comparison
Alaska Airlines is the most reliable airline on the LAS to PDX route with a 83% on-time rate, compared to Southwest Airlines at 75%. Based on 4,468 flights tracked.
This route involves high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Alaska AirlinesASBest | 83% | 1.0% | 61m | 4,468 |
| Spirit AirlinesNK | 82% | 1.1% | 56m | 2,861 |
| SkyWest AirlinesOO | 79% | 1.0% | 58m | 247 |
| Frontier AirlinesF9 | 77% | 2.3% | 53m | 1,006 |
| Southwest AirlinesWNWorst | 75% | 0.6% | 52m | 4,305 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.