Cheap flights from Mexico to St. Louis from $206

In general, September is the cheapest month to fly from Mexico to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $200. The month of May is another great option to travel to St. Louis, with average flight prices from Mexico averaging around $222.

The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $243. 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 $613. 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 Mexico in the morning is the least expensive time of day to depart. momondo users have found prices as low as $243 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 $372 per ticket.

Fly from Cancun to Lambert-St Louis for the best Mexico - Lambert-St Louis flight prices

There is only 1 cabin class available to choose from on Mexico 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 Mexico to St. Louis flight.

As of July 2026, 2 flights take off from Mexico and land in St. Louis each day. The most common flight departure time for this route is 11:00AM, with 58% of daily flights taking off at noon.

As of July 2026, 14 flights take off from Mexico and land in St. Louis each week. The most common flight departure day for this route is Fri, with 29% of weekly flights taking off on this day.