Seems to only work Tue-Wed. Spotty availability on ITA, and even harder to get it to come up on CO's website. Best routing I found on ITA was PHX-SFO-EWR-PIT-EWR-SFO-PIT for 2.2 cpm on 6/7-6/8. However I can't get this to show up on CO's website. I did manage to price out PHX-SFO-ORD-PIT-EWR-PHX on CO for 2.9 cpm.