Elmo007 said:
My point is that the AA policy does not appear to be very customer friendly. Jetblue posted their policy earlier and seems to let you go to the same destination when there is a seat available, even if it is earlier.
But JetBlue has one class of service; they're not a legacy carrier - believe it or not, they're a low-cost carrier.
Among the legacy carriers, for the Northeast storm: Delta's policy is a bit more flexible than AA's. You can travel up to the 29th, no restriction on class, and "If your flight is canceled or significantly delayed, you are entitled to a refund".
US Airways will let you change your ticket online and waive the change fee, if you
• Book the same origin and destination
• Move your entire trip up to 7 days before or after the scheduled departure date
United (on the website, there are some actual links in this text): For waiver-eligible itineraries, we recommend that you reschedule your travel as soon as possible.
If your flight has been canceled, you may already have been rebooked on another flight. Please visit the My Reservations page to see if you have been rebooked.
If you have not yet checked in for your flight and you have not been automatically rebooked, you may be able to reschedule your travel through My Reservations. To do so, select View/Modify next to the appropriate itinerary and then select the "Change itinerary" link.
If you have already checked in for your flight, you must cancel your check-in before trying to rebook through My Reservations. You may cancel your check-in through EasyCheck-in Online®."
Continental (United was kind enough to provide a link

): For original travel dates 12/25-12/27,
•When rescheduled travel commences by January 3, 2011, change fees and fare differences will be waived.
•For all other changes, the change fee will be waived, but a difference in fare may apply.
AA: stated above, but I don't recall what the "you may begin travel as late as" dates were when I looked yesterday. Now - updated as of December 29 - affected passengers could travel as early as 12/25 and as late as 12/29, instead of 12/26-12/27. Again, as the OP stated, original inventory is required; it's not clear if that means the same class, or the same fare code.
Airtran (last update 12/24) "Passengers who are traveling to, from or through the affected cities during the travel period detailed below may adjust their travel dates up to three (3) days prior or five (5) days after their originally scheduled date of travel based on space availability, without change fees or fare adjustments." Can change online.
Southwest lets you "rebook
in the original class of service* or travel standby (within 14 days of their original date of travel between the original city-pairs and in accordance with our accommodation procedures) without paying any additional charge." If you booked online you can change online, otherwise call.
JetBlue "Due to impending inclement weather in the Northeast and Mid-Atlantic region JetBlue will waive fees & increases for Customers traveling in/out of the following cities between, Saturday, December 25th and Monday, December 27th, 2010. Customers will be allowed to rebook through Friday January 14th.
If your travel plans include traveling to or from one of the cities below and you would like to make a change to a new flight without fee or fare difference, please call 1-800-JETBLUE to discuss re-accommodation options." Of course, when you call is when you find out there's at least a half hour wait to talk to a representative
*Appears to mirror AA in this regard