PlaneSane rankings
Least Reliable US Airlines
The US airlines with the weakest controllable-delay record in US DOT data.
- 1
Frontier AirlinesF9 · United States · 1,037,127 flights79.3% - 2
JetBlue AirwaysB6 · United States · 1,444,440 flights80.5% - 3
Allegiant AirG4 · United States · 735,785 flights83.0% - 4
Hawaiian AirlinesHA · United States · 419,604 flights83.6% - 5
Southwest AirlinesWN · United States · 8,027,731 flights83.6% - 6
American AirlinesAA · United States · 11,065,355 flights84.3% - 7
Spirit AirlinesNK · United States · 1,325,200 flights86.5% - 8
United AirlinesUA · United States · 7,914,796 flights87.0% - 9
Alaska AirlinesAS · ALASKA · 2,395,622 flights87.5% - 10
Delta Air LinesDL · United States · 9,052,509 flights88.1%
How this list is built. US airlines with 50,000+ flights, ranked by airline-attributed on-time rate (worst first) from US DOT (BTS) data. Display-only context — advisory, not a guarantee for any one flight.
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