If you use Southwest, it all depends on which day of the week you fly. It seems to be cheaper Tuesdays - Thursdays, and its best to buy tickets on Tuesday or Wednesday. I have the luxury of living near Baltimore which is one of their larger hubs, and the cost of the flights seem to be a little cheaper. This year it cost me $280 round trip from Baltimore to Reno with a stop in Salt Lake City with leaving on 5/6 and returning on 5/12. I have used Southwest the past 2 years to go to the Open Championship, and was pleased with their service plus you get to check 2 bags weighing up to 50 lbs for free. You might be able to find a cheaper flight on another carrier, but you will have to pay for checked bags. As the flights get filled up, the cost seems to become greater.
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Brunswick user and supporter. Go Big B!