The Homeland Security Department says the TSA is now doing more random searches on passengers and pieces of luggage.
These searches are taking place at the gates once travelers have passed through security checkpoints.
The increased security is in response to an al-Qaeda magazine which described how to make homemade bombs using household products.
There's also more security at government buildings in major cities, but no word on if Chicago is included.
The Homeland Security Department announced several steps it's taking in the wake of the attacks in Paris, Ottawa, Canada and Sydney, Australia.
The agency emphasizes it has no information on specific or credible threats.
For more information, visit: www.dhs.gov.