Maybe if flying to the countryside in Algeria.
In Algiers itself its very dangerous.
According to the US gov travel advisory (quoted below) the countryside outside of Algiers in the eastern region is the main place to worry about. Not as much in the city, though not reccomended.
"Terrorism continues to pose a threat to the safety and security of U.S. citizens traveling to Algeria. Terrorist activities, including bombings, false roadblocks, kidnappings, ambushes, and assassinations occur regularly, particularly in the Kabylie region east of Algiers."