Anyone plz help me with this , my friend is coming to oklhoma and he has connection flight at Chicago , any one guide me from terminal 3 to terminal 5 , how much time required to move from 3-5 and how to reach terminal 5?

They have a train running from each terminal. When you arrive at terminal 3, as you come off the plane there is a flight attendant. Ask the flight attendant how to get to terminal 5 and (s)he will direct you.

Contact the airport. Customer service should be able to answer your question.

Thank you all for ur answers