Cheap flights from Missouri to St. Louis from $81

In general, October is the cheapest month to fly from Missouri to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $107. The month of September is another great option to travel to St. Louis, with average flight prices from Missouri averaging around $114.

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $408. 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 Monday because tickets tend to average around $467. 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 Missouri in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $406 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $447 per ticket.

Fly from Kansas City to Lambert-St Louis for the best Missouri - Lambert-St Louis flight prices

There is only 1 cabin class available to choose from on Missouri 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 11% on your flight if you consider stops on a Missouri to St. Louis flight.

As of June 2026, there are 2 flights per day flying from Missouri to St. Louis. The most common time of day flights depart is 1:00PM, with 41% of flights taking off in the afternoon.

The number of flights available between Missouri and St. Louis is 15 per week as of June 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.