Fort Lauderdale to Chicago — airline reliability comparison
United Airlines is the most reliable airline on the FLL to ORD route with a 78% on-time rate, compared to Southwest Airlines at 42%. Based on 4,654 flights tracked.
This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 78% | 1.3% | 79m | 4,654 |
| American AirlinesAA | 73% | 1.0% | 106m | 1,985 |
| Spirit AirlinesNK | 64% | 1.6% | 68m | 3,940 |
| Frontier AirlinesF9 | 63% | 2.6% | 121m | 177 |
| JetBlue AirwaysB6 | 60% | 6.5% | 75m | 46 |
| Southwest AirlinesWNWorst | 42% | 3.7% | 119m | 27 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.