Cheap flights from Illinois to Oklahoma City from $101

The cheapest month to fly to Oklahoma City from Illinois is in October. Flight prices, which tend to average around $68, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Oklahoma City, with average flight prices from Illinois averaging around $81.

The cheapest day to depart on your flight to Oklahoma City is on a Wednesday when prices can be found for as low as $353. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Oklahoma City is Monday, with ticket prices averaging around $579.

The cheapest time of day to fly to Oklahoma City is at noon when flights can be purchased for as low as $373. Flights to Oklahoma City are more costly in the evening, with an average ticket price of $487. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Chicago O'Hare Intl to Oklahoma City Will Rogers World for the best Illinois - Oklahoma City Will Rogers World flight prices

You are more likely to see cheaper flights to Oklahoma City from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Oklahoma City for around $413 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oklahoma City from Illinois for as low as $237 on momondo.

There are 4 cabin classes available to choose from on Illinois to Oklahoma City flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, Delta, and Southwest are the most popular carriers operating from Illinois to Oklahoma City Will Rogers World

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Oklahoma City from Illinois according to our data. American Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Oklahoma City. Keep in mind that there are 4 different airlines that fly to Oklahoma City on a routine basis, so you have a few additional options to choose from.

As of June 2026, 29 flights take off from Illinois and land in Oklahoma City each day. The most common flight departure time for this route is 6:00PM, with 46% of daily flights taking off in the afternoon.

206 flights are operational weekly from Illinois to Oklahoma City as of June 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.