hi there,
A shuttle service, provided by Airport Express and Metro Express, is offered, but reservations must be made in advance.
Oklahoma City Metro Transit provides bus service to downtown Oklahoma City. The bus stop is located at Transportation Plaza, which is accessed from the baggage claim level of the
terminal.
The Jefferson Bus Company provides a daily scheduled service to Lawton, OK and Wichita Falls. Buses depart the airport terminal at 7pm.
Also,
taxis is also another alternative and the average fare from the airport to the downtown area is $20.
Hope this helps
Vacationbuddy