Cheap flights from Texas to St. Louis from $48

In general, October is the cheapest month to fly from Texas to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $285. The month of September is another great option to travel to St. Louis, with average flight prices from Texas averaging around $289.

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $177. 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 $379. 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 Texas at noon is the least expensive time of day to depart. momondo users have found prices as low as $283 when looking at flights departing at noon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $315 per ticket.

Fly from Dallas/Fort Worth to Lambert-St Louis for the best Texas - Lambert-St Louis flight prices

You are more likely to see cheaper flights to St. Louis from Texas when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $329 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Texas for as low as $203 on momondo.

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

Frontier, Southwest, and United Airlines are the most popular carriers operating from Texas to Lambert-St Louis

Southwest, American Airlines and Frontier are the top three most popular airlines that fly to St. Louis from Texas according to our data. Southwest is the first choice among our users, with 49% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 47 flights per day flying from Texas to St. Louis. The most common time of day flights depart is 4:00PM, with 38% of flights taking off in the afternoon.

The number of flights available between Texas and St. Louis is 329 per week as of August 2026. The most frequent departure day is Sun, with 22% of weekly flights leaving on this day.