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Find cheap flights from St. Louis to Mexico from $108

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 departing on 6/26. 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
Mon 7/8
Mon 7/15

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Best Mexico Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Cancún
Cancún1 stop$335
Mexico City
Mexico City1 stop$427
Guadalajara
Guadalajara1 stop$396
Puerto Vallarta
Puerto Vallarta1 stop$286
León
León1 stop$499
Mazatlán
Mazatlán1 stop$557
Morelia
Morelia1 stop$580
Mérida
Mérida1 stop$449
Veracruz
Veracruz3 stops$694

Good to know

Low season

April

High season

March

Cheapest flight

$108
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Cancún

FAQs - booking Mexico flights

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Mexico 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?

    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 with an airline and back to St. Louis with another airline.

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

    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 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 tips for finding cheap flights to Mexico

  • Morning departure is around 6% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to Mexico

Need help choosing which airline to fly with from St. Louis to Mexico? 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 10333 reviews
8.2Boarding
8.0Entertainment
8.6Crew
7.4Food
7.9Comfort
Airline reviews

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

2.0 MediocreJim, Jun 2024ATL - ANC
Read more about Delta reviews

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the premium paid for the first class ticket

Not worth the price of premium class ticket paid, felt more like steerage.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Information when booking said the flight would be with American Airlines but the flight was actualy with British Airways. Check in from Orlando was nice and quick. I agreed to put my cabin case in the checked luggage as it was a full flight. Case came back damaged (unable to put the handle down) so will have to dispose of it. Seats were quite cramped with very little leg room, even for economy. This was the experience of both the outgoing and return flight. Cabin crew were ok and flight time was punctual.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Missed this flight due to the first AA flight delay

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

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.

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

Book cheap flights from St. Louis to Mexico

Recent round-trip flight deals

8/3Sat
1 stopFrontier
14h 54mSTL-PVR
8/6Tue
1 stopFrontier
9h 51mPVR-STL
$286
7/21Sun
1 stopSpirit Airlines
12h 49mSTL-CUN
8/8Thu
1 stopSpirit Airlines
10h 55mCUN-STL
$335
9/21Sat
1 stopVolaris
13h 37mSTL-MEX
9/23Mon
1 stopVolaris
17h 29mMEX-STL
$427
9/21Sat
1 stopVolaris
13h 37mSTL-MEX
9/24Tue
1 stopVolaris
17h 29mMEX-STL
$429
7/10Wed
1 stopUnited Airlines
15h 47mSTL-CUN
8/28Wed
1 stopUnited Airlines
6h 53mCUN-STL
$430
7/23Tue
1 stopDelta
13h 55mSTL-CUN
8/9Fri
1 stopDelta
6h 44mCUN-STL
$445
8/18Sun
1 stopDelta
7h 00mSTL-SJD
8/23Fri
1 stopDelta
9h 34mSJD-STL
$454
8/17Sat
2 stopsAmerican Airlines
18h 42mSTL-SJD
8/21Wed
1 stopAmerican Airlines
10h 42mSJD-STL
$459
8/28Wed
1 stopAmerican Airlines
7h 59mSTL-CUN
9/1Sun
1 stopAmerican Airlines
7h 27mCUN-STL
$460
7/5Fri
1 stopUnited Airlines
5h 04mSTL-CUN
7/12Fri
1 stopUnited Airlines
16h 37mCUN-STL
$479

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Recent one-way flight deals

6/26Wed
1 stopFrontier
24h 00mSTL-CUN
$108
8/3Sat
1 stopFrontier
17h 00mSTL-CUN
$151
9/4Wed
1 stopAmerican Airlines
6h 15mSTL-CUN
$200
6/25Tue
nonstopVolaris
3h 18mSTL-CUN
$230
11/20Wed
nonstopVolaris
3h 23mSTL-CUN
$235
6/25Tue
1 stopAmerican Airlines
6h 50mSTL-SJD
$258
7/8Mon
1 stopUnited Airlines
7h 01mSTL-CZM
$260
9/4Wed
2 stopsUnited Airlines
20h 42mSTL-CZM
$270
6/22Sat
1 stopDelta
20h 53mSTL-SJD
$272
10/10Thu
2 stopsDelta
11h 15mSTL-MEX
$295

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Last minute flights from St. Louis to Mexico

Last minute flight, train and bus deals

6/13Thu
multi-stopSpirit Airlines
12h 11mSTL-CUN
6/20Thu
multi-stopSpirit Airlines
10h 12mCUN-STL
$346
6/13Thu
multi-stop
12h 11mSTL-CUN
6/17Mon
multi-stop
9h 47mCUN-STL
$373
6/10Mon
multi-stopFrontier
12h 08mSTL-CUN
6/12Wed
multi-stopFrontier
26h 21mCUN-STL
$441
6/10Mon
multi-stopFrontier
12h 08mSTL-CUN
6/12Wed
multi-stopFrontier
23h 22mCUN-STL
$498
6/11Tue
multi-stopAmerican Airlines
7h 13mSTL-SJD
6/18Tue
multi-stopAmerican Airlines
8h 02mSJD-STL
$689
6/11Tue
multi-stopAmerican Airlines
8h 58mSTL-SJD
6/18Tue
multi-stopAmerican Airlines
11h 32mSJD-STL
$694
6/13Thu
multi-stopDelta
13h 55mSTL-CUN
6/19Wed
multi-stopDelta
6h 57mCUN-STL
$695
6/10Mon
multi-stopDelta
11h 23mSTL-CUN
6/15Sat
multi-stopDelta
7h 45mCUN-STL
$704
6/10Mon
multi-stopUnited Airlines
7h 06mSTL-CZM
6/15Sat
multi-stopUnited Airlines
17h 27mCZM-STL
$772
6/9Sun
multi-stopUnited Airlines
7h 06mSTL-CZM
6/12Wed
multi-stopUnited Airlines
5h 58mCZM-STL
$784

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