Domestic fares are a lot higher these days thanks to industry consolidation, NW & DL, UA & CO, US & AA, WN & FL. Not a single one of these has led to any benefit to consumers, instead now fares domestically are much higher than 5-10 years ago and fees have gone haywire. With little competition and "capacity discipline" its much easier for them to get away with than when we had a much wider choice of carriers. Oil prices have only brought down international fares that used to have big YQ charges.