I have been buying QUAUP/A fares in the EWR-SFO market for years now, and it's always been about $600-$650 each way. Today, just checked, and the market has DRAMATICALLY changed:
QUAUP UA A One-Way 949.00 (USD) View Rules View Routing
YUAUP UA P One-Way 1149.00 (USD) View Rules View Routing
FUA UA F One-Way 1349.00 (USD) View Rules View Routing
Oddly, LGA is still normal:
QUAUPL UA A One-Way 654.00 (USD) View Rules View Routing
Anyone have any idea what is happening?