United Airlines has an overall on-time arrival rate of 80%. The most common passenger complaint is flight_problems. United Airlines ranks #5 out of 14 U.S. airlines for reliability.
Source: Bureau of Transportation Statistics. Updated October 2026.UA
United Airlines
Lands on time
80%
When late
~72 min
Cancelled
1.2%
Flights tracked
2,691,141
United Airlines is pretty reliable as airlines go. About 80% of their flights land on time. When they don't, you're usually waiting around 72 minutes. The biggest reason? late_aircraft.
About 6.9 out of every 100k passengers file a formal complaint. The thing people complain about most: flight_problems.
Had a problem with United Airlines?
Check what they owe you — free complaint letter included
Busiest United Airlines routes
ORD → LGAChicago – New York
75%on time
LGA → ORDNew York – Chicago
78%on time
ORD → EWRChicago – Newark
75%on time
EWR → ORDNewark – Chicago
75%on time
EWR → MCONewark – Orlando
77%on time
MCO → EWROrlando – Newark
77%on time
DEN → IAHDenver – Houston
77%on time
IAH → DENHouston – Denver
79%on time
IAH → ORDHouston – Chicago
80%on time
ORD → IAHChicago – Houston
80%on time
Data last updated October 2026. Source: Bureau of Transportation Statistics.