Kansas City via a stop in Joplin and also direct to Denver via a stop in Oklahoma City or Tulsa. In 1976 a multi-stop flight was added on a routing of DFW-Lawton, OK-Oklahoma City-Tulsa-Fort Smith-Little Rock-Memphis using a 737. In the spring of 1981, Frontier was flying nonstop Boeing 737-200 jet service to Atlanta and Wichita, KS with direct service one stop service to Denver via Wichita with this flight then continuing on to Phoenix and Tucson. At this time, the Frontier 737 flight to Atlanta was part of an eastbound routing of Orange County John Wayne Airport-Las Vegas-Denver-Wichita-Fort Smith-Atlanta flown every day except on Saturdays with the airline also operating a 737 flight on Saturdays only on an eastbound routing of Spokane-Missoula-Billings-Denver-Tulsa-Fort Smith with Frontier continuing to operate nonstop Convair 580 flights from Dallas/Ft. Worth and Fayetteville, AR as well as direct flights from Kansas City, Memphis, St. Louis, Denver and Omaha also flown with Convair 580 turboprops for a total of ten flights a day, two with 737s and eight with the Convairs. The Convair 580s were retired in 1982 and service from Fort Smith was reduced to two 737 jet flights per day direct to Denver with each service making one stop enroute in either Oklahoma City or Tulsa. All Frontier service then ended on October 1, 1984. Scheduled Skyways provided commuter airline service beginning in the late 1970s with nonstop flights to Dallas Love Field (DAL) and Fayetteville, AR using Fairchild Swearingen Metroliner commuter propjets. The Fayetteville-based airline, which was also known as Skyways, subsequently added new flights from Fort Smith to Dallas/Fort Worth (DFW), Kansas City, Little Rock, Memphis, St. Louis, Tulsa and other regional destinations in the early 1980s as Frontier ended their respective flights with Skyways operating Nord 262 turboprops on some services in addition to the Metroliner propjets. Skyways was then merged into Air Midwest in 1985 and Air Midwest soon began a series of code share relationships with several major airlines. Flights to Kansas City began operating as Eastern Express on behalf of Eastern Airlines in 1986 and were then switched to Braniff Express on behalf of Braniff (1983-1990) in 1988. The Braniff Express service ended in late 1989 when Braniff ceased operations. New service to St. Louis began operating in 1985 as Ozark Midwest on behalf of Ozark Airlines. Ozark was then acquired and merged into Trans World Airlines (TWA)