30 major US airports with the most departure delays, ranked

Flights are considered on time if they depart from the gate within 15 minutes of the scheduled time.
Salt Lake City International Airport had the highest on-time departure performance.
Meanwhile, Fort Lauderdale-Hollywood International Airport had the lowest.

If you're hoping to get to your destination on time, the airport you fly from could make a difference.

The following ranking is based on Bureau of Transportation Statistics data of major airports' on-time departure performance, covering January through June 2026.

The BTS has compiled this data from monthly on-time reports filed by US passenger airlines.A flight is considered on time if it departs from the gate less than 15 minutes after its scheduled departure time.

To provide context on airport scale and airline mix, additional information for each airport has also been compiled from BTS.

The number of scheduled flights for departures covers the 12 months ending May 2026. The top carriers also cover the period from June 2025 to May 2026 and are calculated based on passenger shares for both arrivals and departures.

It's important to note that delays at many of these airports are contingent on weather conditions, such as hurricanes in Florida, New England snowstorms, and Arizona's heat. That could explain why some of these airports are on this list.

Here are the 30 major US airports ranked by on-time departure performance, from best to worst:

30. Salt Lake City International Airport

Delta Airlines planes sit parked at the gate at Salt Lake City International Airport.

On-time departure rate, January-June 2026: 83.73%

Scheduled flights, June 2025-May 2026: 121,882

Top carriers, June 2025-May 2026: Delta 56.35%, SkyWest (15.98%), Southwest (10.42%)

29. Washington Dulles International Airport

Travelers make their way to through the parking garage tunnel to the security checkpoint at Washington Dulles International Airport.

On-time departure rate, January-June 2026: 82.20%

Scheduled flights, June 2025-May 2026: 96,869

Top carriers, June 2025-May 2026: United (58.85%), Mesa (5.67%), Delta (3.88%)

28. Seattle-Tacoma International Airport

Crowded airport terminal concourse at Seattle-Tacoma International Airport with travelers, a large woven overhead sculpture, cafe seating, escalators, and retail signs.

On-time departure rate, January-June 2026: 79.66%

Scheduled flights, June 2025-May 2026: 188,049

Top carriers, June 2025-May 2026: Alaska (48.63%), Delta (19.70%), SkyWest (7.68%)

27. Minneapolis-Saint Paul International Airport

Spacious airport terminal concourse at Minneapolis-Saint Paul International Airport with a circular skylight ceiling, columns, passengers, seating, and gate G18 signage.

On-time departure rate, January-June 2026: 79.03%

Scheduled flights, June 2025-May 2026: 142,608

Top carriers, June 2025-May 2026: Delta (56.73%), SkyWest (9.31%), Endeavor (5.79%)

26. Newark Liberty International Airport

Spacious airport terminal hall at Newark Liberty International Airport with travelers, retail shops, kiosks, flight display boards, and a high ribbed ceiling.

On-time departure rate, January-June 2026: 79.02%

Scheduled flights, June 2025-May 2026: 138,322

Top carriers, June 2025-May 2026: United (60.12%), Spirit* (7.57%), American (5.70%)

*Spirit Airlines is no longer operating and ceased operations in May 2026.

25. George Bush Intercontinental Airport

George Bush Intercontinental Airport entrance sign stands beside trees, landscaping, and a stop sign under a clear sky.

On-time departure rate, January-June 2026: 79.01%

Scheduled flights, June 2025-May 2026: 173,551

Top carriers, June 2025-May 2026: United (56.94%), Mesa (9.87%), Spirit (5.62%)

24. Los Angeles International Airport

Commercial jet descends over a large LAX sign near airport roadways at colorful sunset.

On-time departure rate, January-June 2026: 78.76%

Scheduled flights, June 2025-May 2026: 201,013

Top carriers, June 2025-May 2026: Delta (22.38%), United (18.69%), American (17.69%)

23. Hartsfield-Jackson Atlanta International Airport

Multi-level indoor atrium at Hartsfield-Jackson Atlanta International Airport with a skylight, central clock tower, seating areas, trees, and travelers with luggage.

On-time departure rate, January-June 2026: 77.44%

Scheduled flights, June 2025-May 2026: 348,958

Top carriers, June 2025-May 2026: Delta (74.72%), Frontier (7.00%), Southwest (4.53%)

22. Philadelphia International Airport

Airport terminal and air traffic control tower overlook illuminated runways and gates at dusk.

On-time departure rate, January-June 2026: 77.08%

Scheduled flights, June 2025-May 2026: 130,566

Top carriers, June 2025-May 2026: American (47.43%), Frontier (11.83%), Delta (6.43%)

21. John F. Kennedy International Airport

Colorful apple sculpture stands inside JFK airport terminal near a large "Welcome to New York" sign.

On-time departure rate, January-June 2026: 76.38%

Scheduled flights, June 2025-May 2026: 124,603

Top carriers, June 2025-May 2026: Delta (33.27%), JetBlue (30.54%), American (12.85%)

20. Phoenix Sky Harbor International Airport

Airport control tower and terminal buildings stand before mountains under a cloudy sky.

On-time departure rate, January-June 2026: 76.18%

Scheduled flights, June 2025-May 2026: 208,792

Top carriers, June 2025-May 2026: Southwest (34.51%), American (32.75%), Delta (6.95%)

19. Denver International Airport

People walking through Denver International Airport.

On-time departure rate, January-June 2026: 76.14%

Scheduled flights, June 2025-May 2026: 326,928

Top carriers, June 2025-May 2026: United (40.69%), Southwest (30.40%), Frontier (9.85%)

18. Boston Logan International Airport

Airport check-in hall with empty queue barriers, numbered counters, and international flags hanging overhead.

On-time departure rate, January-June 2026: 76.07%

Scheduled flights, June 2025-May 2026: 161,772

Top carriers, June 2025-May 2026: JetBlue (27.10%), Delta (22.14%), American (13.93%)

17. Tampa International Airport

An aerial view of Tampa International Airport.

On-time departure rate, January-June 2026: 75.85%

Scheduled flights, June 2025-May 2026: 84,484

Top carriers, June 2025-May 2026: Southwest (25.57%), Delta (19.29%), American (16.71%)

16. Detroit Metropolitan Wayne County Airport

Travelers with luggage move through a bright airport terminal beneath a red DELTA train on an elevated track.

On-time departure rate, January-June 2026: 75.80%

Scheduled flights, June 2025-May 2026: 144,924

Top carriers, June 2025-May 2026: Delta (54.32%), SkyWest (10.44%), Spirit (9.56%)

15. Charlotte Douglas International Airport

Slow-moving conveyor or autowalk with a group of travelers inside Charlotte Douglas International Airport.

On-time departure rate, January-June 2026: 75.57%

Scheduled flights, June 2025-May 2026: 237,042

Top carriers, June 2025-May 2026: American (67.78%), Delta (2.15%), Frontier (1.93%)

14. San Diego International Airport

In an aerial view, airplanes are parked at San Diego International Airport's Terminal 2.

On-time departure rate, January-June 2026: 74.04%

Scheduled flights, June 2025-May 2026: 104,990

Top carriers, June 2025-May 2026: Southwest (35.48%), Alaska (13.50%), United (12.24%)

13. Austin-Bergstrom International Airport

Passengers arrive at the South Terminal at Austin-Bergstrom International Airport

On-time departure rate, January-June 2026: 73.52%

Scheduled flights, June 2025-May 2026: 91,854

Top carriers, June 2025-May 2026: Southwest (42.29%), Delta (15.73%), American (14.66%)

12. San Francisco International Airport

A view of the welcome sign at the San Francisco International Airport.

On-time departure rate, January-June 2026: 73.42%

Scheduled flights, June 2025-May 2026: 149,754

Top carriers, June 2025-May 2026: United (47.38%), Delta (10.62%), SkyWest (9.85%)

11. Harry Reid International Airport

Travelers walk through a terminal at Harry Reid International Airport in Las Vegas, Nevada.

On-time departure rate, January-June 2026: 73.21%

Scheduled flights, June 2025-May 2026: 181,954

Top carriers, June 2025-May 2026: Southwest (44.34%), Delta (10.06%), United (8.98%)

10. Miami International Airport

Miami International Airport with international flags, palm trees, and tropical landscaping under a partly cloudy sky.

On-time departure rate, January-June 2026: 72.96%

Scheduled flights, June 2025-May 2026: 115,040

Top carriers, June 2025-May 2026: American (61.27%), Delta (11.87%), United (6.61%)

9. LaGuardia Airport

Passengers walk through the terminal at LaGuardia Airport.

On-time departure rate, January-June 2026: 72.09%

Scheduled flights, June 2025-May 2026: 159,367

Top carriers, June 2025-May 2026: Delta (25.19%), American (14.82%), Endeavor (10.27%)

8. Orlando International Airport

Travelers move through Orlando International Airport with palm trees, balconies, skylight, and a large U.S. flag.

On-time departure rate, January-June 2026: 71.79%

Scheduled flights, June 2025-May 2026: 169,849

Top carriers, June 2025-May 2026: Southwest (26.49%), Delta (14.40%), Frontier (12.26%)

7. Chicago O'Hare International Airport

Travelers walk through the Chicago O'Hare International concourse decorated with pink ribbon banners and an American flag.

On-time departure rate, January-June 2026: 71.03%

Scheduled flights, June 2025-May 2026: 384,095

Top carriers, June 2025-May 2026: United (38.55%), American (22.70%), SkyWest (9.88%)

6. Baltimore/Washington International Thurgood Marshall Airport

Travelers walk by airplanes with Southwest Airlines on the tarmac at the Baltimore/Washington International Thurgood Marshall Airport

On-time departure rate, January-June 2026: 70.74%

Scheduled flights, June 2025-May 2026: 96,660

Top carriers, June 2025-May 2026: Southwest (73.15%), Delta (6.02%), Spirit (4.86%)

5. Nashville International Airport

Travelers make their way to the gates during a temporary ground stop at the Nashville International Airport.

On-time departure rate, January-June 2026: 69.97%

Scheduled flights, June 2025-May 2026: 112,706

Top carriers in June 2025*: Southwest (50.1%), American (14.8%), Delta (13.3%).

*BTS does not have information on Nashville International's top carriers. Instead, this data has been collated from the airport's annual report, which shows average daily scheduled arrivals and departures for June 2025.

4. Ronald Reagan Washington National Airport