The New Castle Airport (formerly known as the Greater Wilmington Airport) is the largest commercial airport located in Delaware. It is in New Castle, Delaware.
Of course, the Dover Air Force Base is a chief airport in Delaware, but I don't recommend that unauthorized pilots try to land there. :-)
For commercial passenger travel to northern Delaware, most people use the Philadelphia International Airport.
For destinations further south, look into Baltimore Washington International
In other words, there are no really major airports.
Philadelphia International Airport is located partially in Southwest Philadelphia and partially in Tinicum Township, Delaware Country.
The airport code for Delaware County Airport is MIE.
The closest major airport to Marydel, DE is Baltimore/Washington International Thurgood Marshall Airport(BWI / KBWI). The airport is in Baltimore and is about 68 miles driving distance from the center of Marydel.
There are 29 Civil airports & 9 international airports:Cairo international airport,Alexandria International Airport,El Arish International Airport,St. Catherine International Airport,Taba International Airport,Mubarak International Airport,Sharm el-Sheikh International Airport,Luxor International Airport &Hurghada International Airport.
The International Airport in Lithuania areKaunas International AirportPalanga International AirportŠiauliai International Airport (CIV/MIL)Vilnius International Airport
The airport code for Calicut International Airport is CCJ.
The airport code for Tocumen International Airport is PTY.
The airport code for Tehran Imam Khomeini International Airport is IKA.
The airport code for Bengaluru International Airport is BLR.
The airport code for Larnaca International Airport is LCA.
The airport code for Sangster International Airport is MBJ.
The airport code for Tucson International Airport is TUS.