Here You can find a list of airlines which operated in Trapani airport.
Bologna - Ryanair
Brindisi Salento - AirOne
Milan Bergamo - Ryanair
Pantelleria - DAT Danish Air Transport
Parma - AirOne
Rome Fiumicino - Ryanair
Treviso - Ryanair
Turin - Ryanair
Malta Luqa - Ryanair
Barcelona El Prat - Ryanair