MEX - STL

$244 Find Cheap Flights from Mexico City to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Mexico City to St. Louis departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Mexico City to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Mexico City to St. Louis, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Mexico City to St. Louis (MEX-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Mexico City to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Mexico City to St. Louis

Wed, Oct 8 - Sun, Oct 12
 Logo
3:10 pm - 8:52 amMEX-STL
16h 42m1 stop
 Logo
9:47 am - 10:55 pmSTL-MEX
14h 08m1 stop
Wed, Oct 8 - Sun, Oct 12
Frontier Logo
6:45 am - 6:07 pmMEX-STL
10h 22m1 stop
Frontier Logo
11:02 am - 10:00 pmSTL-MEX
11h 58m2 stops
$433Frontier
Find Deal
Sun, Sep 14 - Sun, Sep 21
Frontier Logo
6:45 am - 6:10 pmMEX-STL
10h 25m1 stop
Frontier Logo
4:00 pm - 10:35 amSTL-MEX
19h 35m2 stops
$453Frontier
Find Deal
Sun, Sep 14 - Sun, Sep 21
 Logo
8:10 am - 9:06 amMEX-STL
23h 56m1 stop
 Logo
10:39 am - 10:55 pmSTL-MEX
13h 16m1 stop
Thu, Oct 9 - Thu, Oct 23
Delta Logo
8:00 am - 9:30 pmMEX-STL
12h 30m2 stops
Delta Logo
9:10 am - 9:50 pmSTL-MEX
13h 40m2 stops
$500Delta
Find Deal
Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
2:15 pm - 10:16 pmMEX-STL
7h 01m1 stop
United Airlines Logo
6:00 am - 5:50 pmSTL-MEX
12h 50m2 stops
$501United Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
United Airlines Logo
9:35 am - 6:53 pmMEX-STL
8h 18m1 stop
United Airlines Logo
8:20 am - 1:15 pmSTL-MEX
5h 55m1 stop
$613United Airlines
Find Deal
Thu, Oct 9 - Thu, Oct 23
Volaris Logo
6:45 am - 6:07 pmMEX-STL
10h 22m1 stop
Volaris Logo
9:47 am - 10:55 pmSTL-MEX
14h 08m1 stop
$667Volaris
Find Deal
Mon, Sep 22 - Wed, Oct 1
Air Canada Logo
12:15 am - 7:38 pmMEX-STL
18h 23m1 stop
Air Canada Logo
1:30 pm - 10:55 pmSTL-MEX
10h 25m1 stop
$678Air Canada
Find Deal
Tue, Oct 7 - Sun, Oct 12
Air Canada Logo
12:15 am - 7:38 pmMEX-STL
18h 23m1 stop
Air Canada Logo
9:15 am - 11:10 amSTL-MEX
26h 55m1 stop
$683Air Canada
Find Deal
Booking Insights

KAYAK's insights & trends for Mexico City to St. Louis flights

Get data-powered insights and trends into flights from Mexico City to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Mexico City to St. Louis?

What’s the cheapest day of the week to fly from Mexico City to St. Louis?

The average price of all round-trip flights from Mexico City to St. Louis clicked on KAYAK for each day over the last 12 months.

When flying from Mexico City to St. Louis, you should consider leaving on a Wednesday and avoid Saturdays if you are looking for the best rates. For your return to Mexico City, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Mexico City to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Mexico City to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Mexico City to St. Louis is March, where tickets cost $449 (return) on average. On the other hand, the most expensive months are July and February, where the average cost of round-trip tickets is $756 and $695 respectively.

Good to know

Low seasonMarch
Cheapest flight$244
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Mexico City to St. Louis

When to book flights from Mexico City to St. Louis

Are your dates flexible? Find out the best times to travel from Mexico City to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Mexico City to St. Louis

  • What is the cheapest flight from Mexico City to St. Louis?

    In the last 3 days, the lowest price for a flight from Mexico City to St. Louis was $244 for a one-way ticket and $421 for a round-trip.

  • Do I need a passport to fly between Mexico City and St. Louis?

    Yes

  • Which airports will I be using when flying from Mexico City to St. Louis?

    On your way to St. Louis, you’ll fly out from Mexico City Benito Juarez. You’ll be landing at Lambert-St Louis.

  • Which aircraft models fly most regularly from Mexico City to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Mexico City to St. Louis?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Mexico City and St. Louis, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Mexico City to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Mexico City to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Mexico City to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Mexico City is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Mexico City to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Mexico City with another airline. Booking your flights between Mexico City and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Mexico City to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Mexico City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Mexico City to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Mexico City to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Mexico City to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8900 reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

I found the staff to not be very attentive at all. When paying for Business Class you expect a certain type of service and that was not found. They were almost rude even

4.0 OkayCarly, Jul 2025SYD - SFO
Read more United Airlines reviews

I found the staff to not be very attentive at all. When paying for Business Class you expect a certain type of service and that was not found. They were almost rude even

Not good , late, and long. We came home so late and spent so much time flying around and taxiing

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Ok. Get a different kosher caterer. The food was odd.

Food was terrible. Crew was kind but skipped over my row for providing sandwiches and beverages.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Everything you need to know for your flight from Mexico City to St. Louis

Information on your arrival and departure airports

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