I flew into Dulles (Washington DC) from Los Angeles for a three day business meeting. After landing I knew we had a three hour bus ride to our destination so wanted to grab something for the road. An associate who had flown into Dulles before suggested Potbelly and I'm glad he did.
The shop is small and has a two-price structure. No matter what sandwich you order the small is one price (about $5.90) and the large is a bit more. They also have salads as well. The set up is similar to a Quiznos in that you order the sandwich and chose bread and cheese. The sandwich is then toasted ending up where you choose what other toppings you want on your sandwich. They have bottled drinks (water, sodas, teas, and beer), a wide variety of chips, and some of the largest whole pickles I've ever seen.
I ordered the Turkey Breast while others in our party other kinds (Tuna, chicken breast, etc.). All of us agreed the sandwiches were very good. I liked mine enough that when I flew out a couple of days later I bought another to take on the plane. If and when I fly again into Dulles I will have no hesitation to going to Potbelly again.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.