When I visited Fayetteville for a friend’s graduation, I checked Southwest first. They don’t fly to every Fayetteville—there are a couple in the U.S.—so I had to double-check the airport codes. Southwest covers the one in Arkansas (XNA area), which worked for me. The best part of the trip planning was being able to adjust my return flight instantly online when the event ran long. Their site really is the quickest way to book, cancel, or switch flights without worrying about fees or long waits.