A diplomat who attended the court hearing told CNN the appeal was unsuccessful.
The report said she still has one more appeal left to a special court in Naypyidaw, or Abode of Kings, the new capital of the country formerly called Burma. The capital is being built about 300 miles north of the current capital Yangon, formerly called Rangoon.
Suu Kyi, 64, a Nobel Peace Prize winner, has spent most of the past 20 years in detention.
In August, another 18 months were added to her house arrest after the military junta accused her of violating her detention rules in an incident involving John Yettaw, an American who stayed at her lakeside home without her invitation.
Suu Kyi's National League for Democracy won a huge victory in elections in 1990 but the military rulers never accepted the results.
New elections were promised for this year but the junta but no dates have been set.
Suu Kyi, however, won't be allowed to contest in the elections on grounds she had married a foreigner, CNN reported.