United Airlines has an overall on-time arrival rate of 76%. The most common passenger complaint is flight_problems. United Airlines ranks #5 out of 6 U.S. airlines for reliability.
Source: Bureau of Transportation Statistics. Updated March 2026.UA
United Airlines
Lands on time
76%
When late
~40 min
Cancelled
2.0%
Flights tracked
70,719
United Airlines is middle of the pack — not bad, but delays happen. About 76% of their flights land on time. When they don't, you're usually waiting around 40 minutes. The biggest reason? carrier.
About 6.9 out of every 100k passengers file a formal complaint. The thing people complain about most: flight_problems.
Busiest United Airlines routes
DFW → PHXDallas – Phoenix
78%on time
DFW → SFODallas – San Francisco
77%on time
JFK → ORDNew York – Chicago
73%on time
ORD → SFOChicago – San Francisco
75%on time
JFK → FLLNew York – Fort Lauderdale
75%on time
JFK → SFONew York – San Francisco
74%on time
ORD → ATLChicago – Atlanta
77%on time
SFO → PHXSan Francisco – Phoenix
77%on time
ORD → LGAChicago – New York
75%on time
ORD → LAXChicago – Los Angeles
76%on time
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Data last updated March 2026. Source: Bureau of Transportation Statistics.