I don't think that anyone looks forward to eating at the airport. Airport vendors are dealing with a captive audience, and so the food is often overpriced, underwhelming in flavor, and of questionable nutritional value.
Airport food presents an additional challenge to vegetarians: is there even anything veg to eat? In some small regional airports, the only available options are pre-packaged meat sandwiches or salads with meat in them. In a small airport, I consider myself lucky if I can find a grill or sandwich shop where I can ask an employee to make a cheese sandwich for me.
In a larger venue like Denver International Airport (DIA), it's less a question of whether a vegetarian option exists, and more a question of whether the vegetarian option is 1) affordable and 2) something that I want to eat. During recent trips, I've found myself ordering the hummus plate (pictured above) at the Pour la France on the B concourse. It's relatively affordable ($5.95 plus tax) and actually tastes like something I would eat even if I wasn't at the airport. Bonus points for including some fresh vegetables.
What have your airport food* experiences been? Do you have any suggestions or tips for travelers looking for a veg meal at DIA?
*some commenters might ask why I don't just bring food from home. If it is a short trip, I do, but if I'm going to be gone for a week or more, I clean out the refrigerator before I leave, making this option less viable.