[sithadmin]

I used to have the same itinerary more recently, and managed to lower the costs on United by 20-40% by booking overlapping itineraries >7 days long, where I'd:

1.Kick off Itinerary 1 on Sunday 1 (To SFO),

2.Kick off Itinerary 2 on Friday 1 (DC return),

3.Kick off Itinerary 3 on Sunday 2 (To SFO),

4.Close Itinerary 1 on Friday 2 (DC return),

5.Close Itinerary 2 on Sunday 3 (To SFO),

6.Close Itinerary 3 on Friday 3 (DC Return)

...ad infinitum