I looked last week when the March fares came out and a round trip for us was $210 each. Then it quickly went up to $310. Then tonight it went back down to $210. I should have bought then. Now it is back to $268. If I buy one way legs of our trip at that price and then the price goes down, will SW give me a credit on my card? I don't want a credit for a future ticket cause we don't fly that much.