I don't know about you, but I'm itching to get outta this gray and gloomy weather, and am ready to head South for the rest of the Winter. Remember the sun? Yeah, me neither. If you need some assistance getting some vitamin D, check out these apps that will help you book flights, cars, and hotels in a place where it's warm and sunny. Or not — you can go North too if you want. It's totally up to you.