#1. Airports near Adelphi, MD Ronald Reagan Washington National Airport (DCA) 11 miles Weekly Flights: 2,548 Domestic Routes: 90 Delayed Flights: 18% Average Delay (hr): 1¼
#2. Airports near Adelphi, MD Baltimore-Washington International Thurgood Marshall Airport (BWI) 20 miles Weekly Flights: 2,053 Domestic Routes: 70 Delayed Flights: 21% Average Delay (hr): 1
#3. Airports near Adelphi, MD Washington Dulles International Airport (IAD) 27 miles Weekly Flights: 1,321 Domestic Routes: 75 Delayed Flights: 15% Average Delay (hr): 1½
#4. Airports near Adelphi, MD Hagerstown Regional Airport-Richard A Henson Field (HGR) 64 miles Weekly Flights: 3 Domestic Routes: 2 Delayed Flights: 37% Average Delay (hr): 1¼
#5. Airports near Adelphi, MD Harrisburg International Airport (MDT) 83 miles Weekly Flights: 121 Domestic Routes: 13 Delayed Flights: 16% Average Delay (hr): 1½
#6. Airports near Adelphi, MD Charlottesville-Albemarle Airport (CHO) 100 miles Weekly Flights: 107 Domestic Routes: 4 Delayed Flights: 20% Average Delay (hr): 1½
#7. Airports near Adelphi, MD Richmond International Airport (RIC) 105 miles Weekly Flights: 447 Domestic Routes: 21 Delayed Flights: 20% Average Delay (hr): 1¼
#8. Airports near Adelphi, MD Philadelphia International Airport (PHL) 110 miles Weekly Flights: 2,249 Domestic Routes: 86 Delayed Flights: 20% Average Delay (hr): 1¼
#9. Airports near Adelphi, MD Shenandoah Valley Regional Airport (SHD) 116 miles Weekly Flights: 13 Domestic Routes: 3 Delayed Flights: 17% Average Delay (hr): 2
#10. Airports near Adelphi, MD Newport News-Williamsburg International Airport (PHF) 131 miles Weekly Flights: 51 Domestic Routes: 3 Delayed Flights: 19% Average Delay (hr): 1¼
#11. Airports near Adelphi, MD Atlantic City International Airport (ACY) 132 miles Weekly Flights: 63 Domestic Routes: 8 Delayed Flights: 11% Average Delay (hr): 1¾
#12. Airports near Adelphi, MD Lehigh Valley International Airport (ABE) 140 miles Weekly Flights: 80 Domestic Routes: 11 Delayed Flights: 18% Average Delay (hr): 1½
#13. Airports near Adelphi, MD Trenton Mercer Airport (TTN) 145 miles Weekly Flights: 50 Domestic Routes: 19 Delayed Flights: 33% Average Delay (hr): 1½
#14. Airports near Adelphi, MD Norfolk International Airport (ORF) 151 miles Weekly Flights: 438 Domestic Routes: 26 Delayed Flights: 19% Average Delay (hr): 1½
#15. Airports near Adelphi, MD Arnold Palmer Regional Airport (LBE) 157 miles Weekly Flights: 21 Domestic Routes: 5 Delayed Flights: 11% Average Delay (hr): 1¾
#16. Airports near Adelphi, MD Lynchburg Regional Airport-Preston Glenn Field (LYH) 168 miles Weekly Flights: 20 Domestic Routes: 1 Delayed Flights: 24% Average Delay (hr): 1¼
#17. Airports near Adelphi, MD Wilkes-Barre-Scranton International Airport (AVP) 175 miles Weekly Flights: 65 Domestic Routes: 8 Delayed Flights: 16% Average Delay (hr): 1½
#18. Airports near Adelphi, MD North Central West Virginia Airport (CKB) 176 miles Weekly Flights: 16 Domestic Routes: 4 Delayed Flights: 19% Average Delay (hr): 2
#19. Airports near Adelphi, MD Newark Liberty International Airport (EWR) 189 miles Weekly Flights: 2,767 Domestic Routes: 95 Delayed Flights: 24% Average Delay (hr): 1¼
#20. Airports near Adelphi, MD Roanoke-Blacksburg Regional Airport-Woodrum Field (ROA) 200 miles Weekly Flights: 47 Domestic Routes: 5 Delayed Flights: 23% Average Delay (hr): 1¼