According to ABC News, Pelsoi was offered the same jet that Hastert used:

A source close to the controversy over the request made by House Speaker Nancy Pelosi, D-Calif., for use of a military plane that can fly to and from her home district in San Francisco, Calif., without having to stop to refuel, tells ABC News that the Pentagon has rebuffed Pelosi’s request.

The source says that Pentagon officials and the Bush administration have instead offered Pelosi use of the same plane made available to former Speaker Dennis Hastert, R-Illinois: a C-20, which seats about 12 passengers and five crew members.

A C-20 can make the 700-mile flight to Hastert’s Aurora, Ill., district easily but would generally have to stop to refuel to complete the 2,800-mile trip from Washington D.C. to the San Francisco Bay Area, depending on the headwinds.