Pacifica Legal Services | Floyd Fernandez
The short answer is yes. You are applying for an extension of your non-immigrant status. If you filed before its expiration, you can continue to stay, and yes, you may travel. Keep at least a copy of the notice from CIS of your accepted application with you on your trip, along with your I-94 on your passport. Best to you, and call if you have any other need of help, or you may e-mail me.
Answer Applies to: California
Law Office of Immigration & International Trade Law | Linda Liang
If your visa has not expired, you can stay in US and you can travel in US as well.
Answer Applies to: Florida