Is There a Doctor in the Lounge?

Like delayed flights, health problems are an inevitable part of travel. But what happens if you're stricken with toothache while waiting for your plane back to Kansas or Karachi? What kind of medical treatment can you expect at the airport?

Generally the good kind, says David Gamper, director of facilitation for the industry trade group Airports Council International. "Most hubs, especially where there are long layovers, have sophisticated medical centers," he says. This includes equipment such as X-ray machines, C.T. scanners and defibrillators, as well as the doctors and nurses to work them. New York City's JFK has...