United Airlines LAX to ORD on-time performance
United Airlines nonstop flights from Los Angeles to Chicago · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
0.7%
25 flights
Avg arrival delay
15 min
68 min when late
Rank on route
#1 of 5
route average 76% on time
Key facts
- United Airlines flights on LAX to ORD arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 5 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (43%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion43%
- Late-arriving aircraft32%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather1%
- Security0%
Other airlines on LAX to ORD
- American Airlines73% on time · 27 min avg delay
- Frontier Airlines61% on time · 57 min avg delay
- Spirit Airlines78% on time · 19 min avg delay
- Delta Air Lines72% on time · 21 min avg delay
Full LAX to ORD comparison →
United Airlines on-time record across all routes →
3,388 United Airlines flights tracked on this route; 25 cancelled, 24 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.