What are our top three reasons for loving Southwest Airlines? No hidden fees, no hidden fees, and no hidden fees. We also like how airfares just got lower with the "Wanna Get Away?" sale. Fly on Tuesday or Wednesday and you can snag fares for $49 to $99 one-way on select routes nationwide. Fly Thursday to Monday, and sale prices range from $59 to $159 one-way.

Book by January 19 and fly between January 15 and April 30 with a 14-day advance purchase.