If you're planning on travelling to MADExpo, and need to fly into the area, there are two great airports for you to choose from.
Newport News/Williamsburg International Airport (PHF)
PHF is the closest airport to the convention center, but it's a very small airport. If you're flying in on allegiant, Delta, Frontier, PEOPLExpress, or US Airways, this is going to be a great airport for you to look into. Check in and security is a breeze. TSA won't give you the 3rd degree here.
From PHF to the convention center is about 15 minutes. Quick taxi ride and you're there!
Norfolk International Airport (ORF)
ORF is where you fly into for the best assortment of airlines and travel times. Most people will fly into ORF because it's the easiest to get really good flights for. Beware though that travel time from ORF to the convention center is hit or miss. You have to pass Norfolk Naval Base (World's Largest Naval Base), and it's a crap shoot in the early morning or mid afternoon. With no traffic, it's a 20-30 minute interstate drive to the airport. In traffic, add another 30 minutes.
TSA at ORF is alright. There are two checkpoints, and each one takes about 10 minutes on a heavy day.
If you're the type of person who likes to take the train, there is a stop at Newport News. From their you can take a taxi to the convention center/hotel, all in about 20 minutes.