• NCDOT/Amtrak Piedmont
• Yadkin River Car
• Amtak bike boxes are 69x41x8.5inches

The latest regs on U.S. Airways' web-site (Oct '06) says trans- Atlantic bikes fly free, but the main baggage page makes no mention of this and when I called customer service they said it was changed as of Dec '06 and trans-Atlantic now costs $80 each way IF it's over L+W+H limit of 62 inches, which seems quite likely for any non-folding bike (amtrak boxes are 69x41x8.5).

You do have to sign a release form, so pack carefully (and remove that rear derailleur, even if you are shipping the bike with the wheels in place--a broken hanger is not worth the risk--unless you're feeling up to 1225km fixed or single.)

Rule 225 - Excess Baggage Charges; Last Updated 11/02/2005; Rule Revision #8

   EXCEPTION: ONE BICYCLE MAY BE ACCEPTED FREE OF CHARGE ON
   TRANS-ATLANTIC FLIGHTS.

AMERICA WEST

PDF America West Airlines; Contract of Carriage; Domestic U.S.; Last Updated: 10/04/2006
Rule 225 - Excess Baggage Charges; Last Updated 11/02/2005; Rule Revision #8
Page 225-1; Rule 225 - Excess Baggage Charges

…

D) SPORTING EQUIPMENT
   BICYCLES
   BICYLES WILL BE ACCEPTED AS CHECKED BAGGAGE FOR A CHARGE OF
   $80.00 USD PER DIRECTION, IF OVER 62 INCHES IN TOTAL DIMENSIONS
   (TOTAL DIMENSIONS ARE LENGTH + WIDTH + HEIGHT). ONE ITEM OF
   BICYCLE EQUIPMENT IS DEFINED AS ONE NON-MOTORIZED TOURING OR
   RACING BICYCLE WITH A SINGLE SEAT.
   EXCEPTION: ONE BICYCLE MAY BE ACCEPTED FREE OF CHARGE ON
   TRANS-ATLANTIC FLIGHTS.
   BICYCLES SHOULD BE PREPARED FOR TRANSPORTATION BY THE PASSENGER.
   BICYCLE MUST BE PLACED IN A CARDBOARD OR HARD CASED BIKE
   CONTAINER. BICYLES NOT ENCLOSED WILL STILL BE ACCEPTED, HOWEVER,
   THE HANDLEBARS MUST BE FIXED SIDEWAYS AND PEDALS REMOVED, OR
   BICYCLE HANDLEBARS AND PEDALS MUST BE ENCASED IN PLASTIC OR FOAM
   OR SIMILAR MATERIAL FOR TRANSPORT. A RELEASE FORM WILL ALSO NEED
   TO BE SIGNED BY THE PASSENGER.

Bicycles

Bicycles will be accepted as checked baggage for a charge of $80.00 per direction, if over 62 inches in total dimensions (total dimensions are length + width + height). One item of bicycle equipment is defined as one non-motorized touring or racing bicycle with a single seat.

Bicycles should be prepared for transportation by the passenger. Bicycle must be placed in a card board or hard cased bike container. Bicycles not enclosed will still be accepted, however, the handlebars must be fixed sideways and pedals removed, or bicycle handlebars and pedals must be encased in plastic or foam or similar material for transport. A release form will also need to be signed by the passenger.