The Federal Aviation Administration said in a statement that the pilot of Flight 5320 declared an emergency shortly before noon Wednesday.
American Airlines spokeswoman Katy Cody said the aircraft was leaking fuel as a result of the deer strike. TV stations showed damage to one of the right front wing flaps of the CRJ700 jet, and emergency personnel sprayed foam on the aircraft as a precaution.
No injuries were reported. The 44 passengers aboard the flight deplaned by stairs onto the tarmac and were seen boarding buses to return to the terminal.