United Airlines SFO to PDX on-time performance
United Airlines nonstop flights from San Francisco to Portland · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.2%
3 flights
Avg arrival delay
13 min
62 min when late
Rank on route
#1 of 4
route average 80% on time
Key facts
- United Airlines flights on SFO to PDX arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 80% on time overall.
- The largest source of delay minutes was late-arriving aircraft (62%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft62%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion7%
- Extreme weather0%
- Security0%
Other airlines on SFO to PDX
- Alaska Airlines79% on time · 12 min avg delay
- SkyWest Airlines78% on time · 13 min avg delay
- Frontier Airlines80% on time · 6 min avg delay
Full SFO to PDX comparison →
United Airlines on-time record across all routes →
1,716 United Airlines flights tracked on this route; 3 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.