Pegasus on the Fly is perhaps the best fast food restaurant I've ever seen in an airport. This fast food Greek restaurant, open 24 hours a day at Midway Airport, serves up delicious and cheap fare. My wife and I love catching them in the morning for breakfast, where their huge breakfast gyros are mouth-watering (lamb, egg, and feta cheese). Don't bother with McDonald's when you can have Pegasus on the Fly. Pegasus almost makes us want to fly more often.