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STL - MEX

Find cheap flights from St. Louis to Mexico City from $221

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 6/21. 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
0 bags
Sat 6/8
Sat 6/15

Search 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
In the last 7 days travelers have searched 43,895,468 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
2:18 pm - 10:50 pmSTL-MEX
9h 32m1 stop
8:10 am - 2:37 pmMEX-STL
29h 27m1 stop
$448Frontier
Find Deal
Mon, Jun 17 - Sat, Jun 22
7:23 pm - 9:10 pmSTL-MEX
26h 47m1 stop
12:40 am - 4:15 pmMEX-STL
14h 35m2 stops
Mon, Jun 3 - Sun, Jun 9
4:05 pm - 10:00 pmSTL-MEX
30h 55m3 stops
7:55 am - 10:57 amMEX-STL
26h 02m2 stops
Mon, Jun 3 - Mon, Jun 10
2:18 pm - 10:50 pmSTL-MEX
9h 32m1 stop
3:45 pm - 9:40 amMEX-STL
16h 55m2 stops
$462Frontier
Find Deal
Mon, Jun 17 - Thu, Jun 20
7:00 am - 3:30 pmSTL-MEX
9h 30m2 stops
9:50 am - 11:43 pmMEX-STL
12h 53m2 stops
$519Delta
Find Deal
Thu, Jun 6 - Thu, Jun 13
7:00 am - 10:00 pmSTL-MEX
16h 00m1 stop
5:55 am - 9:13 pmMEX-STL
14h 18m1 stop
$535Delta
Find Deal
Thu, Jun 6 - Sun, Jun 9
4:02 pm - 10:00 pmSTL-MEX
6h 58m1 stop
11:15 pm - 4:20 pmMEX-STL
16h 05m2 stops
$570Aeromexico
Find Deal
Fri, Jun 7 - Mon, Jun 10
5:30 pm - 12:45 pmSTL-MEX
20h 15m1 stop
4:40 am - 4:28 pmMEX-STL
10h 48m1 stop
$602United Airlines
Find Deal
Sat, Jun 29 - Wed, Jul 3
6:00 am - 6:00 pmSTL-MEX
13h 00m2 stops
11:05 pm - 4:20 pmMEX-STL
16h 15m2 stops
$605Aeromexico
Find Deal
Fri, Jun 21 - Mon, Jun 24
5:30 pm - 12:45 pmSTL-MEX
20h 15m1 stop
4:40 pm - 3:40 pmMEX-STL
22h 00m2 stops
$606United Airlines
Find Deal
Sat, Jun 29 - Wed, Jul 3

Flights from St. Louis to Mexico City - Travel Insights & Trends

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.

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

The average price of all flights from St. Louis to Mexico City clicked on KAYAK for each day over the last 12 months.
For St. Louis to Mexico City, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Mexico City back to St. Louis, the best deals are generally found on Saturday, with Tuesday being the most expensive.

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 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 January, where tickets cost $577 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is $731 and $693 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from St. Louis to Mexico City, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 52 days before departure.

Which airlines provide the cheapest flights from St. Louis to Mexico City?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from St. Louis to Mexico City found by KAYAK users in the last 72 hours was for $448 on Frontier, followed by Delta ($519). One-way flight deals have also been found from as low as $238 on Frontier and from $295 on American Airlines.

Good to know

Low season

April

High season

December

Cheapest flight

$221
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 14% increase in price.
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 $221 for a one-way ticket and $448 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?

    oneworld, SkyTeam, and Star Alliance 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 Aeromexico?

    The two airlines most popular with KAYAK users for flights from St. Louis to Mexico City are Delta and Aeromexico. With an average price for the route of $636 and an overall rating of 8.0, Delta is the most popular choice. Aeromexico is also a great choice for the route, with an average price of $617 and an overall rating of 7.6.

  • 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.

See more FAQs

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.
8.0
DeltaOverall score based on 10778 reviews
8.2Boarding
7.9Comfort
8.6Crew
8.0Entertainment
7.4Food
Airline reviews

West Jet has a horrible boarding process and the seats have no cushion.

4.0 OkayDouglas, May 2024MSP - YEG
Read more about Delta reviews

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

The plane was so outdated, that it made it uncomfortable. The temperature was hot during the whole flight

Happy attentive flight crew. All in all good flight the night flight works well. Getting into Mexico City early so you don't get caught up it all the immigration and custom ques, additionally, this helps when exiting the airport and crossing the city to your final destination. All works very well and would do it again

All the pessengers should be wait in a line útil the creo and piloto are arrived.

Planes seat could be bigger very uncomfortable for tall humans.

Atraso de dos horas y media con vuelos sobre vendidos

Great airplane The confort was within the high standards. My only little problem was That all the movies ( only 3) was on Spanish, even though I was selecting the audio on English it didn't happen. After that I highly recommend aeromexico

We were sitting on the plane for half an hour before we arrived at the gate after landing. We had to wait half an hour to collect our luggage.

Made payment for extra baggage online. When I got to check-in, they made me pay again. Lesson learned - Dont buy extra luggage allowence online, only pay at check-in.

Cons: "Plane delayed on tarmac on arrival. Immigration line was chaos with no staff helping to provide order. Missed my connection and changed to another flight the next morning - aeromexico would not pay for hotel or taxi. Supervisors were rude and dismissive, didn’t care about effect on my plans."
Cons: "Nice flt, competent and diligent cabin crew. But at ck in they assessed a $20.25 carryon bag fee even though my reservation via Kayak said one carryon was included. (It was within their weight and size limits) Even with empty seats they assigned me the non reclining row that abuts the restrooms (noise, smells, etc.)"

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Overall good flight. The flight attendants were annoying and unfriendly. They would ask me to grab someone else’s trash can just waiting until the person woke up or after the flight is done. It’s not my job to pick up someone else’s trash. Especially when it’s not easily reachable.

The WiFi tv wasn’t working. The flight was over sold and moved several times. The gate assignment appeared on the screens right as we were supposed to board. Because of the flight being over sold we were almost stuck in Cancun for a couple of a days. The flight attendants were unfriendly and would wake you up to pick up other people’s trash.

The reason we chose Volaris to fly from LAX to Mazatlan, Mexico was because of the DATES and TIMES for the NON-STOP flights. When those flights got Totally Changed that was UNACCEPTABLE ! ! ! Also, when my husband Died unexpectedly, the Only statement that Customer Service kept repeating was "they would only offer Credit on a future flight". REALLY?! Volaris was only going to offer CREDIT on another flight to a DEAD PERSON ! ! !

Service of the person who gave us the boarding pass

Overall good but we had a minor scare when a wind shear caused the plane to re take off on the first landing attempt. The crew handled it well and we landed safely on the second attempt

It was unfortunate that I paid more than $120 one way to carry on my luggage to only have to have them checked baggage. We board the flight and there’s a lot of overhead space. They checked our bags in Group 2 but Group 3 was able to board with their luggage. I would not fly Volaris again. The flight attendance on the plane was very nice but the employees at the gate prior to boarding was very rude.

For the price, you pretty much can't beat this airlines. As far as comfort, you could do a lot better, but it'll cost you. Over all cheapest way to get from point A to point B.

To many extra fees, poor customer service and very uncomfortable flight. No leg room and seat wont recline.

I am disabled and was unable to get any assistance from Volaris. I had to wait in line at front desk for 45 minutes, I am by myself, and unable to stand. When I got to front desk check in, they had no assistance for me. I did however, have wheelchair assistance when I arrived in Mexico City. Thank God for that!

It was horrible, our flight back was overbooked and had to take a flight 12hours later in the day but to LAX. Volaris is horrible.

Book cheap flights from St. Louis to Mexico City

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Mexico City found on KAYAK in the last 72 hours.
6/21Fri
1 stop
24h 54mSTL-MEX
$221
6/7Fri
1 stop
24h 54mSTL-MEX
$223
6/14Fri
1 stop
31h 03mSTL-MEX
$233
7/19Fri
1 stopFrontier
13h 37mSTL-MEX
$238
6/7Fri
2 stops
29h 40mSTL-MEX
$244
6/21Fri
2 stops
28h 31mSTL-MEX
$257
6/7Fri
3 stops
28h 50mSTL-MEX
$263
6/16Sun
1 stopAmerican Airlines
15h 33mSTL-MEX
$295
6/16Sun
2 stopsAmerican Airlines
10h 03mSTL-MEX
$315
5/14Tue
2 stopsAeromexico
8h 50mSTL-MEX
$525

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Last minute flights from St. Louis to Mexico City

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Mexico City that are departing in the next 10 days.
5/14Tue
multi-stop
25h 55mSTL-MEX
5/21Tue
multi-stop
17h 23mMEX-STL
$478
5/14Tue
multi-stop
23h 11mSTL-MEX
5/21Tue
multi-stop
22h 18mMEX-STL
$515
5/14Tue
multi-stop
21h 00mSTL-MEX
5/21Tue
multi-stop
18h 01mMEX-STL
$521
5/14Tue
multi-stop
21h 00mSTL-MEX
5/21Tue
multi-stop
29h 46mMEX-STL
$544
5/14Tue
multi-stop
23h 11mSTL-MEX
5/20Mon
multi-stop
14h 35mMEX-STL
$612
5/14Tue
multi-stopAeromexico
6h 37mSTL-MEX
5/15Wed
multi-stopAeromexico
15h 50mMEX-STL
$736
5/14Tue
multi-stopDelta
6h 55mSTL-MEX
5/15Wed
multi-stopDelta
7h 44mMEX-STL
$795
5/14Tue
multi-stopAeromexico
12h 20mSTL-MEX
5/15Wed
multi-stopAeromexico
14h 50mMEX-STL
$806
5/14Tue
multi-stopDelta
7h 29mSTL-MEX
5/15Wed
multi-stopDelta
7h 44mMEX-STL
$865
5/13Mon
multi-stopUnited Airlines
18h 25mSTL-MEX
5/23Thu
multi-stopUnited Airlines
7h 50mMEX-STL
$1,129

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St. Louis - Mexico City Flights

Departure:

St. Louis (undefined)United States

Destination:

Mexico City (MEX)Mexico

Return flight deals:

Mexico City - St. Louis

Cabin classes: