To travel with a Segway, here is helpful information

Following are the specs on each piece of equipment:
Item Weight   Item Weight
Front Battery 9.4 lbs   Tires (ea) 7.8 ;bs
Rear Battery 9.6 lbs   HT platform 47.0 lbs
Handle bar 4.6 lbs   Travel case 31.5 lbs

     
Total weight:
117.7 lbs
         

The travel case depicted below is a Stanley "Mobile Job Chest" which is either model # 1-92-790, or model #8270, available from Home Depot for $59.00. (The item# (SKU#?) on my reciept says 3253561927904). Segway is using the following for shipping their demo HT's around: http://www.contico.com/l_3725.htm. It is a 37" Tuff Bin box, made by Contico. The fenders do not need to come off, but the wheels do.It is available at Home Depot (check out homedepot.com) for $44. Here's their info: Model: #3725, SKU: #610566. Note that the Contico does not have wheels on the case.

Below are the above components, placed into the travel case. The wheels are off in the image below. Note the slight bowing on the front. This is a tight fit to be sure.:


Below is a detail of the front, with the lid closed. I've added the glow in the gap to better illustrate the slight bowing without any pressure applied to seal the case.


below is the case closed.


The use of a ziptie in place of a lock allows for the secure transport, without any concern of the case poppng open. Further, while a lock on the case may present a problem for airport security, a ziptie allows for them to cut the case open without damaging the case, and you'll know if they opened the case for inspection. Carrying a few extra zipties either inside the case, taped to the wall or lid, will allow for resealing for the return trip. For more protection, simple duct-tape over the handle and across the top will make the case even more secure. Also, you may want to clip the "tail" of the ziptie off once you've sealed the case.

The bonus of this case is that it has a slide-out handle, and wheels on one end, so it can be rolled like a suitcase

.


Note -- alternatively, you can pack the HT platform without removing the wheels:


Note repetition of bowing issue:


You'll have to pack your handlebar in another suitcase, but your total weight for the HT case will drop to 110 lbs.


Below are the specs of the case: L=37.9 in, W=23", H=23.5". L+W+H=104.4".

Case & HT Weight - All parts, no tools: (wheels off)
117.7 lbs
Case & HT weight - All parts except handlebar, no tools, (wheels on, handlebar in alternative suitcase)
113.1 lbs
Case & HT weight - batteries removed, no tools
  98.7 lbs
     

It seems that most airlines listed below will NOT transport your Segway as luggage without the batteries removed simply for weight restrictions.

All Information is for Domestic flights. Check all airline websites before you go.
Airline
Free
L+W+H Limit
Max Free
Weight
Max Paid
Weight & Charge

Absolute Max
L+W+H dimensions
(No bags bigger than this
for any reason)

American
62"
50 lbs
100 lbs/$50
115 in
Delta
62"
50 lbs
100 lbs/$80
80 in *
Northwest
62"
50 lbs
100 lbs/$50
Call
United
62"
50 lbs
Call
115 in
US Air++
62"
70 lbs
Call
Call
Southwest
62"
70 lbs
100 lbs/$70
Call
Jet Blue
62"
70 lbs
100 lbs/Call
80 in
         

* Call Delta -- there appears on their website to be an indication that any item above the limits above may be allowed, with a $100 charge.

++ Call US Air -- they (and perhaps others?) have a category specifically labeled "Personal-Assist Devices" and the Segway is commonly referred to as an Electric Personal Assisted Mobility Device" in almost all state legal paperwork. US Air also requests (as probably do others) 48 hour advance notice for the transportation of an electric wheelchair on aircraft with fewer than 60 seats, and the transportation of a wet spillable battery (i do not believe Ni-MH batteries fit into this category.)

NOTE: Most airlines have Cargo services for cases over 100 lbs. Call to get details.