There are casinos in Oklahoma which are located in several major cities. One of the most popular casinos is River Spirit Casino Resort located outside Tulsa, OK. This casino has over 2 million square feet and offers a wide variety of gaming options for its guests to enjoy. They offer slot machines, table games such as blackjack or poker, and other forms of entertainment including concerts by some well-known artists like Kenny Chesney.
River Spirit has been in operation since 2004 with over 400 employees on staff at all times to ensure that customers have an enjoyable experience while playing at the casino. It was recently awarded Best Places to Work 2017 by The Oklahoman Newspaper!
Oklahoma has a long history with land-based casinos but it does not allow online casinos. They are talking about it, but have not made any plans. If you just look at a legal interactive casino map. you won't notice all of the casino hotel proposals.
Interesting, the state of Oklahoma has state lottery, which is real money entertainment. It also means to some people that they are open to other forms of real money gambling.
The nearest international casinos are in Nevada which offers online poker through the World Series of Poker.
But you can still play at an online casino if you are in Oklahoma. That means you can get a bonus or deposit and then play when you are in a state where it is legal (even if your stopover is at the airport). Just be aware of what the expiry date for the bonus is.