Instruction :
What are the different air routes for traveling between Genova (GOA) and San Francisco (SFO) from fastest to longest?

Response:
1 - GOA-MUC-SFO (United Airlines)
2 - GOA-FRA-SFO (United Airlines)
3 - GOA-AMS-SFO (KLM)
4 - GOA-FCO-SFO (ITA Airways)
5 - GOA-FCO-JFK-SFO (ITA Airways + Delta Airlines)
6 - GOA-FCO-LAX-SFO (ITA Airways + Delta Airlines)
7 - GOA-AMS-JFK-SFO (KLM + Delta Airlines)
8 - GOA-AMS-ATL-SFO (KLM + Delta Airlines)
9 - GOA-AMS-MSP-SFO (KLM + Delta Airlines)