Thought to see how much it would be to fly IAD-EZE in February. Astounded to see days when "lowest" (non-refundable) coach fare comes in at $2350. This is just over 10K of flying to this RT, meaning that the cost per mile is almost 23 cents?! Hard for me to believe that UA is selling non-refundable coach tickets for a sum like that, and I wondered if UA charges as much per mile on any other long distance route, let alone more on a cents per mile basis. Anyone aware of as expensive or more expensive UA routes?