Airline Piedmont Airlines (1948-1989) (PI)
| IATA / ICAO code: | PI / PDT |
| Country: | United States |
| Airline website: | http://www.piedmont-airlines.com/ |
| IATA / ICAO code: | PI / PDT |
| Country: | United States |
| Airline website: | http://www.piedmont-airlines.com/ |