STL - MEX

$166 Find Cheap Flights from St. Louis to Mexico City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Mexico City departing on 3/24. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Mexico City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Mexico City, 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 St. Louis to Mexico City, as well as popular online travel agencies
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$372
Typical prices: $504-$597
Aeromexico
Sat 5/2Sun 5/3
STL - MEX • 2 stops
Cheapest one-way
$157
Typical prices: $303-$358
Multiple Airlines
Tue 3/24
STL - MEX • 2 stops
Top airlines
Aeromexico
Cheapest • from $372 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Mexico City. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Atlanta (ATL)
Cheapest • Avg $633 (round-trip)
Dallas (DFW)
Shortest trip • 6h 06m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 18% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Mexico City!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Mexico City 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 St. Louis to Mexico City

Sat, May 2 - Sun, May 3
Aeromexico Logo
6:00 am - 9:55 pm
STL
-
MEX
16h 55m
2 stops
Aeromexico Logo
7:05 am - 11:36 pm
MEX
-
STL
15h 31m
1 stop
$372Aeromexico
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
8:17 pm - 10:15 pm
STL
-
MEX
50h 58m
2 stops
Multiple Airlines Logo
8:40 am - 7:32 pm
MEX
-
STL
9h 52m
1 stop
$385Multiple Airlines
Mon, Apr 27 - Thu, May 7
Multiple Airlines Logo
8:17 pm - 10:15 pm
STL
-
MEX
50h 58m
2 stops
Multiple Airlines Logo
8:40 am - 7:12 pm
MEX
-
STL
9h 32m
1 stop
$386Multiple Airlines
Mon, Apr 27 - Sun, May 10
Multiple Airlines Logo
8:17 pm - 10:15 pm
STL
-
MEX
50h 58m
2 stops
Multiple Airlines Logo
8:40 am - 7:12 pm
MEX
-
STL
9h 32m
1 stop
$388Multiple Airlines
Mon, Apr 20 - Mon, May 4
Multiple Airlines Logo
8:23 pm - 10:15 pm
STL
-
MEX
26h 52m
2 stops
Multiple Airlines Logo
8:40 am - 7:32 pm
MEX
-
STL
9h 52m
1 stop
$391Multiple Airlines
Mon, Apr 20 - Thu, May 7
Multiple Airlines Logo
8:23 pm - 10:15 pm
STL
-
MEX
26h 52m
2 stops
Multiple Airlines Logo
8:40 am - 7:12 pm
MEX
-
STL
9h 32m
1 stop
$392Multiple Airlines
Sat, May 2 - Sun, May 10
Multiple Airlines Logo
8:17 pm - 10:45 am
STL
-
MEX
39h 28m
2 stops
Multiple Airlines Logo
8:40 am - 7:12 pm
MEX
-
STL
9h 32m
1 stop
$395Multiple Airlines
Sat, May 2 - Thu, May 7
Multiple Airlines Logo
8:17 pm - 10:15 pm
STL
-
MEX
26h 58m
2 stops
Multiple Airlines Logo
8:40 am - 7:12 pm
MEX
-
STL
9h 32m
1 stop
$396Multiple Airlines
Sat, Apr 18 - Mon, May 4
Multiple Airlines Logo
8:17 pm - 8:05 pm
STL
-
MEX
24h 48m
2 stops
Multiple Airlines Logo
8:40 am - 7:32 pm
MEX
-
STL
9h 52m
1 stop
$397Multiple Airlines
Sat, Apr 18 - Thu, May 7
Multiple Airlines Logo
8:17 pm - 8:05 pm
STL
-
MEX
24h 48m
2 stops
Multiple Airlines Logo
8:40 am - 7:12 pm
MEX
-
STL
9h 32m
1 stop
$398Multiple Airlines
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Mexico City, 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 St. Louis to Mexico City is September, where tickets cost $541 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $875 and $745 respectively.

How far in advance should I book a flight from St. Louis to Mexico City?

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

To get a below average price on the flight from St. Louis to Mexico City, you should book around 3 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$157
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from St. Louis to Mexico City

When to book flights from St. Louis to Mexico City

Are your dates flexible? Find out the best times to travel from St. Louis to Mexico City 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 St. Louis to Mexico City

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

    In the last 3 days, the lowest price for a flight from St. Louis to Mexico City was $157 for a one-way ticket and $372 for a round-trip.

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

    A passport is required to fly from St. Louis to Mexico City.

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

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Mexico City, also known as Mexico City Benito Juarez.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Mexico City are Delta and United Airlines. With an average price for the route of $572 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $616 and an overall rating of 7.4.

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

    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 St. Louis to Mexico City.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Mexico City from St. Louis 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 St. Louis to Mexico City?

    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 Mexico City with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and MEX 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 St. Louis to Mexico City?

    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 Mexico City from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Mexico City

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Mexico City. 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 St. Louis to Mexico City? 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.
7.9
DeltaOverall score based on 8237 reviews
8.1Boarding
7.9Comfort
7.2Food
8.5Crew
7.8Entertainment
Airline reviews

I was happy that I was able to get a last minute flight but unfortunately my seat was a middle seat. Even with Delta Comfort I wasn't comfortable

8.0 ExcellentSheila, Mar 2026
ATL - EWR
Read more Delta reviews

I was happy that I was able to get a last minute flight but unfortunately my seat was a middle seat. Even with Delta Comfort I wasn't comfortable

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Flight was warm for first few hours and quite rough

Seat was extremely hard which made even a short 1 hour 20 minute flight fairly uncomfortable.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Both ground crew and flight crew were rude, and did not provide any level of service. They made it very difficult as we were traveling with a passenger the required assistance.

From the check-in, to the flight, and arriving, everything went very smoothly. Unfortunately, when I received my baggage it was severely damaged. I have a hard shelled suitcase and it was completely smashed it. I’m not sure how this could happened but I am extremely disappointed that my belongings were damaged beyond repair and continued use.

Really nice, all good, nice crew and all on time

Unfortunately I had an awful boarding experience. Our first flight with Aeromexico was fine and landed on time however it couldn’t find a gate and we were late which made us lose our connecting flight with Aeromexico. The staff handled it horribly when we explained our situation and would not led us board when we missed the boarding time by a couple minutes. The staff were extremely rude and did not attempt to even help us. Because of this incident, my husband and I missed a full day of work which negatively impacted our salary which we need. Please compensate us for the work that we missed.

It was OK. The flight is pretty long for the airlines to only offer a simple sandwich on business class. The entertainment is similar to that on other Skyteam members. Ultimately the airline lost my bag and didn’t deliver it to me until the next day after a lengthy lost baggage report.

Good, the flight from Miami to Mexico City was better than Mexico City to Miami

Aeroméxico cancelled my ticket without advice AND It make a last minute mess in my intinerary, no solving my situation, bad advice and bad customer service

Flight was on time, good service, but there was no free WiFi, even for first class passengers

It was good in general. The Crew during the flight were very nice at all times.

The ground staff were not as friendly and nice to the passengers as the air crew. Flight attendants, cockpit crew were great and very nice to everyone on board.

The worst Airline ever. They centered my second flight and leave me in NY. They don’t have any representatives at the airport and they don’t respond to calls. Basically I got stuck. I will never purchase through there again.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

It was a train wreck but on an airplane. First off, flight was delayed then we board only to hear two announcements, First weather delays in Orlando and second backup battery warning on emergency lights. After sitting on the plane for almost 2 hours they have us deplane due to the maintenance issue. We were told they were getting another plane. In the mean time, I notice another American- Orlando flight and ask the gate agent if I can switch. He says he cant help me and I'd have to walk to A13 from A37. Really!? I get down there and get a seat only to get an announcement my original flight was RE-boarding. The Then inflight there's no communication and I notice on flightaware were circling over the Gulf of America. I call the flight attendant and of course she has no clue and apparently 5m later the pilot finally tells us about another delay. Why does American always have these service and delay issues? They are my LAST choice in flights now!

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

For my arriving destination, we were delayed multiple times to the point that we arrived 6 hours after we were originally scheduled. On my flight home, they overbooked and involuntarily removed passengers (including me) from the plane. It was not a good experience.

It was good experience this time. The flight was on time.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

It's very confusing because Kayak has it as American Airlines, but it was Hawaiian Airlines, but operated by Alaska Airlines. I had to go to the airport for my boarding pass because American said I didn't have any trips.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

First of all we hade waited 3 hours in the airplane waiting to leave. Second the return schedule was changed and it messed up my entire vaction. I won't buy never again another flight and recommend to nobody traveling with them.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

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

Information on your arrival and departure airports