SkyWest Airlines is the most reliable airline on the ONT to PDX route with a 92% on-time rate, compared to Frontier Airlines at 76%. Based on 486 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: ONT to PDX
Ontario to Portland — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines92%
Alaska Airlines90%
Frontier Airlines76%
ONT to PDX Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 92% | 0.3% | 40m | 486 |
| Alaska AirlinesAS | 90% | 2.4% | 51m | 1,035 |
| Frontier AirlinesF9Worst | 76% | 1.0% | 47m | 336 |
Route Overview
88%
Overall On-Time
52m
Avg Delay
1.4%
Cancel Rate
1,946
Total Flights
Flying out of ONT? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.