We paid $402.40 USD per person round trip, which was $1 less than the best price available through the LAN website. Will try to check in online, but will also arrive at least 2 hours early to be on the safe side. Missed a flight at CDG in Paris several years ago and learned a hard lesson about wasting a vacation day (a very long story about how everything that could go wrong did go wrong, begining with needing exact change for the airport bus for which fares had been raised the week before...).