Southwest is offering their lowest one-way fares for flights this winter that will end today at 11:59pm. Buy now before the flights fill up and the offer ends.

One-way fares are as low as $49, $99, $129, $149. Plan your trip HERE for travel Dec. 3 through Dec. 17, 2014 and Jan. 6 through Feb. 11, 2015. Travel is valid every day except Fridays and Sundays.

If you have already purchased a ticket prior to this offer you can go HERE to check for a lower fare.

INSIDE|Point: The deadline to purchase tickets is based on the respective time zone of the originating city. You can travel every day except Fridays and Sundays on most flights; however, travel dates are limited between some states. Visit the bottom of the page HERE for detailed travel restrictions.