The USGS File List Ordering page allows you to enter lists (up to 500 Landsat scenes) and see which scenes are downloadable immediately, which scenes need to be processed, and the scenes that are not available.
The USGS File List Ordering page allows the upload of these file types:
A text file displaying one image id per line
*Bulk Download, Download Them All, or Order
Bulk Download = an easy way to download many Landsat scenes. When using this option, all downloadable scenes are automatically placed into an order, which can be downloaded using the Bulk Download Application.
Download Them All = Provides the scenes in a list from which you can download individually or with a separate download utility.
Order = Processing is required to create the Landsat Level-1 data product. Processing takes 1 to 3 days, and will send an email confirmation when the Level-1 product is ready to download.
**Landsat Download Products:
Level-1 Data Product = compressed bundle of full resolution individual band files, ancillary data and metadata files.
LandsatLook Images = full resolution .jpeg files.