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How to get the cheapest flight ticket from Mexico City to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Mexico City and St. Louis?
What is the cheapest month to fly to St. Louis?
In general, March is the cheapest month to fly from Mexico City to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $449. The month of August is another great option to travel to St. Louis, with average flight prices from Mexico City averaging around $502.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $465. 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 Saturday because tickets tend to average around $778. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Mexico City at noon is the least expensive time of day to depart. momondo users have found prices as low as $465 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $695 per ticket.
How have Mexico City to St. Louis flight prices changed over time?
As of June 2025, prices for Mexico City to St. Louis flights are approximately 23% cheaper when compared to flights at the same time last year.
When to book flights from Mexico City to St. Louis
Cheap Mexico City to St. Louis (MEX to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Mexico City to St. Louis
How far is Mexico City Benito Juarez to Lambert-St Louis by plane?
The distance between Mexico City Benito Juarez and Lambert-St Louis is about 1430.3 mi. A reasonable flight in good conditions will take 8h 32m.
When did momondo last update prices for flights from Mexico City Benito Juarez Airport to Lambert-St Louis Airport?
Prices for flights from Mexico City Benito Juarez Airport to Lambert-St Louis Airport were last updated today.
How old do you have to be to fly from Mexico City Benito Juarez Airport to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Mexico City Benito Juarez Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Mexico City to St. Louis?
Finding the right flight to St. Louis from Mexico City is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.
Can I find flights from Mexico City to St. Louis with flexible booking policies on momondo?
Yes. All flights to St. Louis from Mexico City on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Mexico City to St. Louis?
momondo provides multiple filters to help you find the best flight to St. Louis from Mexico City. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Mexico City to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Mexico City to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.