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Worst US airports for delays

Fort Lauderdale Hollywood International Airport (FLL) has the lowest on-time departure rate among major US airports at 66.3%, with an average departure delay of 23.6 minutes. Ranking from US DOT BTS data. Last updated 2026-07-07.

# Airport On-time Avg delay Cancelled
1 Fort Lauderdale Hollywood International Airport (FLL) 66.3% 23.6 min 3.28%
2 Dallas Love Field (DAL) 70.5% 14.7 min 0.96%
3 Ronald Reagan Washington National Airport (DCA) 72.3% 19.4 min 3.33%
4 William P. Hobby Airport (HOU) 73.3% 13.1 min 0.76%
5 Chicago Midway International Airport (MDW) 73.4% 14.6 min 2.1%
6 President Donald J. Trump International Airport (PBI) 73.5% 19.1 min 2.96%
7 Baltimore/Washington International Thurgood Marshall Airport (BWI) 73.6% 14.7 min 2.07%
8 Chicago O'Hare International Airport (ORD) 73.7% 20.6 min 3.66%
9 Orlando International Airport (MCO) 73.9% 16 min 2.34%
10 Dallas Fort Worth International Airport (DFW) 74.2% 16.3 min 1.74%
11 Miami International Airport (MIA) 74.8% 16.3 min 1.71%
12 Nashville International Airport (BNA) 75.2% 14.1 min 1.52%
13 LaGuardia Airport (LGA) 75.2% 15.7 min 6.48%
14 Southwest Florida International Airport (RSW) 77.2% 15.6 min 2.32%
15 Harry Reid International Airport (LAS) 77.4% 11.3 min 0.83%

On-time = departed within 15 minutes of schedule; major airports (≥5,000 recent flights). Source: US DOT Bureau of Transportation Statistics (BTS).

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US airport delays — FAQ

What is the worst US airport for delays?

Among major US airports, Fort Lauderdale Hollywood International Airport (FLL) has the lowest on-time departure rate at 66.3%, with an average departure delay of 23.6 minutes, based on US DOT BTS data.

How is 'on-time' defined?

A departure is on time if it leaves within 15 minutes of the scheduled time. The rate is the share of departures meeting that bar, from the US DOT BTS dataset.

Which US airports are most reliable?

The most on-time major US airports are BOI (87.2%), PDX (86.9%), GEG (86.7%), SLC (85.6%), IAD (85.1%).