Megabus is offering a great deal right now, a free ticket. The city-to-city express bus service is offering 200 thousand free seats. The seats are for travel from January 4 to March 1, and can be booked to or from more than 70 cities and Toronto.
Travelers must use the promo code "Go Free", on the Megabus website. You're more likely to get the deal if you're flexible on your travel dates and can travel in the middle of the week. But you should look soon, the offer is limited.