SkyWest Airlines PDX to ONT on-time performance
SkyWest Airlines nonstop flights from Portland to Ontario · Aug 2025 – Jul 2026Regional airline operating flights for United Express, Delta Connection, American Eagle and Alaska.
On-time arrivals
82%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
10 min
49 min when late
Rank on route
#2 of 3
route average 84% on time
Key facts
- SkyWest Airlines flights on PDX to ONT arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 5% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 84% on time overall.
- The largest source of delay minutes was late-arriving aircraft (51%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)44%
- Air traffic control & airport congestion5%
- Extreme weather0%
- Security0%
Other airlines on PDX to ONT
- Alaska Airlines85% on time · 9 min avg delay
- Frontier Airlines78% on time · 14 min avg delay
Full PDX to ONT comparison →
SkyWest Airlines on-time record across all routes →
62 SkyWest Airlines flights tracked on this route; 0 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.