Now, if you really want wackiness, you can fly out of DCA rather than IAD, connecting through LGA (DCA-LAG-EZE). That will be $4380.80 1/31 -
2/8/09, almost all of it in base fare ($4292). Just under 40cpm routing the way united.com suggests. [Or go LGA-EZE for only $2029.80, or only $2165.80.]

So, are there more expensive advance purchase fares on long-haul UA routes? And any thoughts about why such outrageous fares to EZE? If UA can sell tickets for that much, why don't they put extra planes and crew on that route and make a bundle?