If you plan to make the trip to Arlington, there are several options available to you. The first, of course, is driving. The estimated driving time from Oklahoma City to Arlington, Texas is only about 3 and a half hours. If you're planning to fly, though, don't wait because airline tickets and hotels will go fast.
Since the game is just after New Year's Day, flights may very well be booked quickly. You can check availability and even purchase tickets online. Round trip tickets into Dallas-Fort Worth Airport start at about $200.
Also, if you don't want to put the miles on your car, consider renting a car. It's a short, easy road trip that will only take a few hours. You then have a vehicle to get in and around town.
Another possibility is traveling by train. Amtrak can take you from Oklahoma City to Dallas by way of Ft. Worth for only about $32. The trip will likely take just over 5 hours.
If you don't have any friends or family in the Dallas area with whom you can stay, you'll need to book yourself a hotel.
Dallas and Arlington, of course, have plenty of options for hotels. The Cotto Bowl's list of "preferred hotels" includes the Hyatt and the Hilton. In addition, book through Arlington Visitors Bureau and receive discounted rates. The rates for those range anywhere from about $80 up to $330.
In addition, Oklahoma State University has travel packages in conjunction with International Tours that include game ticket, hotel, pep rally and more.
If you're trying to make the trip on the cheap, consider getting a hotel in one of the other suburbs of Dallas such as Fort Worth, Irving or Grand Prairie, especially if you're driving or renting a car.
To See and Do
While you're in town, why not take some time to visit the sites around Dallas. About.com has a lot of information on the city of Dallas and its suburbs, as well as Guide to Texas Travel, Danno Wise, who can help you find the best places to see. Check out the Top Things to Do in Dallas, the Best Restaurants and the Cotton Bowl Parade.