If you are headed to the Consumer Electronics Show next week in Las Vegas, but you've failed to book a flight yet, you're in luck. Spirit Airlines has flights from $50 each way. We just booked several flights from the SF Bay Area for $106, roundtrip. it's the lowest price we could find on these flights. Final pricing will depend on your location, but a quick perusal of nationwide flights showed that there are deals to be had from just about all locations Spirit services.