MEX - STL

$222 Find Cheap Flights from Mexico City to St. Louis - Compare and Save

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 8/12. 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, 0 bags

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Everything you should know

Cheapest round-trip
$334
Typical prices: $511-$709
Frontier
Wed 9/30Tue 10/6
MEX - STL • 1 stop
Cheapest one-way
$222
Typical prices: $476-$525
Volaris
Wed 8/12
MEX - STL • 1 stop
Top airlines
Cheapest • from $334 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Mexico City and St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $568 (round-trip)
Shortest trip • 6h 51m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight 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, Sep 30 - Tue, Oct 6
Frontier Logo
8:40 am - 7:17 pm
MEX
-
STL
9h 37m
1 stop
Frontier Logo
12:17 pm - 9:45 pm
STL
-
MEX
10h 28m
1 stop
$334Frontier
Wed, Sep 30 - Tue, Oct 6
Frontier Logo
8:40 am - 7:17 pm
MEX
-
STL
9h 37m
1 stop
Frontier Logo
12:17 pm - 9:45 pm
STL
-
MEX
10h 28m
1 stop
$338Frontier
Thu, Oct 15 - Mon, Oct 19
Frontier Logo
7:00 am - 5:46 pm
MEX
-
STL
9h 46m
1 stop
Frontier Logo
6:41 pm - 10:45 am
STL
-
MEX
17h 04m
2 stops
$382Frontier
Thu, Oct 15 - Mon, Oct 19
Frontier Logo
7:00 am - 5:46 pm
MEX
-
STL
9h 46m
1 stop
Frontier Logo
6:41 pm - 10:45 am
STL
-
MEX
17h 04m
2 stops
$383Frontier
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
4:40 am - 2:10 pm
MEX
-
STL
8h 30m
1 stop
United Airlines Logo
3:12 pm - 11:10 pm
STL
-
MEX
8h 58m
1 stop
$548United Airlines
Thu, Oct 1 - Tue, Oct 6
United Airlines Logo
9:35 am - 9:21 pm
MEX
-
STL
10h 46m
2 stops
United Airlines Logo
3:11 pm - 11:10 pm
STL
-
MEX
8h 59m
2 stops
$548United Airlines
Thu, Oct 15 - Mon, Oct 19
Delta Logo
9:15 am - 11:54 pm
MEX
-
STL
13h 39m
2 stops
Delta Logo
7:00 am - 11:55 am
STL
-
MEX
5h 55m
1 stop
$548Delta
Thu, Oct 15 - Mon, Oct 19
Delta Logo
9:15 am - 11:54 pm
MEX
-
STL
13h 39m
2 stops
Delta Logo
10:14 am - 8:55 pm
STL
-
MEX
11h 41m
2 stops
$548Delta
Wed, Sep 30 - Tue, Oct 6
United Airlines Logo
9:35 am - 8:36 pm
MEX
-
STL
10h 01m
2 stops
United Airlines Logo
10:27 am - 5:50 pm
STL
-
MEX
8h 23m
2 stops
$548United Airlines
Wed, Nov 4 - Mon, Nov 9
Delta Logo
9:50 am - 9:59 pm
MEX
-
STL
12h 09m
2 stops
Delta Logo
12:20 pm - 10:35 pm
STL
-
MEX
10h 15m
2 stops
$550Delta
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?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Mexico City to St. Louis departing in September.

Flight prices are below average for this route right now.

Flights to St. Louis from Mexico City usually cost between $523 and $731 in September.
The lowest price found in the past 5 days was $334 on Frontier (Sep 30-Oct 6).

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 May, where tickets cost $477 (return) on average. On the other hand, the most expensive months are April and March, where the average cost of round-trip tickets is $794 and $757 respectively.

Good to know

Low season

November

Cheapest flight

$222
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 7% 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 5 days, the lowest price for a flight from Mexico City to St. Louis was $222 for a one-way ticket and $334 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?

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

  • Which is the best airline for flights from Mexico City to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Mexico City to St. Louis are Delta and United Airlines. With an average price for the route of $676 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $626 and an overall rating of 7.4.

  • 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 airlines 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.
7.8
DeltaOverall score based on 8483 reviews
7.8Comfort
8.5Crew
7.8Entertainment
8.1Boarding
7.2Food
Airline reviews

Flight was suspended mid air for over 1 hour and it was late

2.0 MediocreSohini, Feb 2026
MEX - EWR
Read more Delta reviews

Flight was suspended mid air for over 1 hour and it was late

Flight from MEX to ATL had to divert to Tampa. When we got off the plane, there were non directions on what to do. Nearly 30 minutes just standing around. Finally told to go through security with no boarding passes, and turned away. Then told to to go back. Took forever to leave Tampa for ATL. Missed my connection to Harrisburg.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

The crew was amazing; Von, Vera and Guadalupe were very friendly and attentive throughout the entire flight. They were friendly and welcoming to everyone. A solid and dedicated team for sure!

The checkpoint hornets are always looking fhrough Americans' luggage keeping what they deem impassible! Grrrrr!

Since it wasn’t a Delta flight, I was not able to sit with my group and there was no entertainment.

The pilot was excellent - he flew us around a storm and even though predicted it would be a bumpy ride - was able to avoid all turbulence and land us safely with only a 15 min delay. Kudos!

Great flight crew, easy boarding, delicious snacks and spacious seats. Love flying delta - worth the price.

As we lined up to board they gave our plane to a flight going to Newark. So then we got delayed until they could find another plane. Flight crew was ok. I’m assuming since it’s a shorter flight they only offered water and coffee.

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airport terminal was outdated, flight was on a small jet with no wifi

Mean flight attendant. I wanted to reuse my plastic cup, but he (Matthew) said he can't for safety. I then said "I don't want water then" and he poured me a glass. I hope Matthew gets herpes and spends the rest of his life poor, lonely, and homeless.

Flight left on time. Boarding was easy. Arrived to EWR 30 mins early. Luggage was deplaned in good time. Overall a very good experience.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Its good expeince but in enternteiment please be like you tube the music i like or movie

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Terrible. 2 hour delay. Sat on the tarmac. Missed my connecting flight. Had to ARGUE with Customer service to get a hotel and food. Terrible experience with my loyal carrier

The crew’s attitud was not good, only worried for pilot’s comfort, so I ask myself why do I pay so much for so less. The plane is old and broken. I will rey another airline

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

Information on your arrival and departure airports