You remind me of a trip I did back in 2010 or 2011. DUB-PHL and then PHL-SFO with US Airways. Bit of a last-minute decision, but I had to get to California to ask my future wife to marry me. I cashed in some BMI Diamond Club miles and paid less than $20 for the whole trip. But because of relative tailwinds and headwinds it turned out to be almost exactly 7hrs + 7hrs. The dramatic difference in service between trans-Atlantic (meals + IFE) and trans-continental Y (no meals, no IFE) also sucked.