Cheap flights from Oklahoma to St. Louis from $48

In general, February is the cheapest month to fly from Oklahoma to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $289. The month of September is another great option to travel to St. Louis, with average flight prices from Oklahoma averaging around $309.

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $414. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $470. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

Flying to St. Louis from Oklahoma in the morning is the least expensive time of day to depart. momondo users have found prices as low as $438 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $452 per ticket.

Fly from Tulsa to Lambert-St Louis for the best Oklahoma - Lambert-St Louis flight prices

There is only 1 cabin class available to choose from on Oklahoma to St. Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 28% on your flight if you consider stops on a Oklahoma to St. Louis flight.

117 flights are operational weekly from Oklahoma to St. Louis as of August 2026. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.

Flight times from Oklahoma to St. Louis vary, but if you’re flying out of Stillwater and flying into St. Louis (one of the most popular routes), then the duration is 4h 04m on average. Another popular route from Oklahoma to St. Louis is flying from Tulsa to St. Louis, which will take roughly 4h 30m. Keep in mind that layovers or delays could extend your travel time.