You can use the Save as command to save individual messages in Text or HTML format. To save multiple messages, you'll need to use VBA or a utility. See Tools for a list of utilities that can automate the process and save messages in a variety of formats.
For a small fee, Southwest Airlines' Early Bird Check-In allows passengers to check-in to a flight automatically up to 36 hours prior to the flight's scheduled departure time.
If you buy late, you will lose out on the early-bird promotions and have to buy the expensive ticket. If you buy early, theres always a chance that the airline have last minute promotion when the seats are not filled up. Anyways, flying during the summer is the peak season. Its best to get the ticket early.