$127 Find Cheap Flights from Mexico to St. Louis - Compare and Save

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Cheap Flights from Mexico to St. Louis

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Thu, Oct 15 - Mon, Oct 19
Air Canada Logo
1:20 pm - 6:41 pmCUN  Cancun-STL Lambert-St Louis
29h 21m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
8:55 am - 9:50 amSTL  Lambert-St Louis-CUN Cancun
24h 55m1 stop Toronto Pearson Intl
$369Air Canada
Thu, Oct 15 - Mon, Oct 19
Air Canada Logo
1:20 pm - 6:41 pmCUN  Cancun-STL Lambert-St Louis
29h 21m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
8:55 am - 9:50 amSTL  Lambert-St Louis-CUN Cancun
24h 55m1 stop Toronto Pearson Intl
$371Air Canada
Thu, Oct 22 - Mon, Oct 26
Frontier Logo
11:08 am - 2:25 pmCUN  Cancun-STL Lambert-St Louis
3h 17mnonstop
Frontier Logo
6:30 am - 9:39 amSTL  Lambert-St Louis-CUN Cancun
3h 09mnonstop
$376Frontier
Fri, Oct 9 - Mon, Oct 12
Multiple Airlines Logo
8:45 pm - 2:25 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
16h 40m1 stop Cancun
Multiple Airlines Logo
6:35 pm - 10:15 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
28h 40m2 stops Atlanta Hartsfield-Jackson Houston George Bush Intcntl
$381Multiple Airlines
Wed, Nov 4 - Mon, Nov 9
Frontier Logo
7:55 pm - 2:46 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
18h 51m1 stop Cancun
Frontier Logo
12:14 pm - 10:45 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
10h 31m1 stop Dallas/Fort Worth
$390Frontier
Thu, Oct 22 - Mon, Oct 26
Frontier Logo
9:55 am - 4:58 pmCUN  Cancun-STL Lambert-St Louis
7h 03m1 stop Dallas/Fort Worth
Frontier Logo
6:30 am - 9:39 amSTL  Lambert-St Louis-CUN Cancun
3h 09mnonstop
$393Frontier
Thu, Oct 15 - Mon, Oct 19
United Airlines Logo
12:11 pm - 10:59 pmCUN  Cancun-STL Lambert-St Louis
10h 48m1 stop Chicago O'Hare Intl
United Airlines Logo
3:11 pm - 10:06 amSTL  Lambert-St Louis-CUN Cancun
18h 55m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$430United Airlines
Thu, Oct 22 - Mon, Oct 26
United Airlines Logo
12:11 pm - 9:21 pmCUN  Cancun-STL Lambert-St Louis
9h 10m1 stop Chicago O'Hare Intl
United Airlines Logo
6:15 am - 2:37 pmSTL  Lambert-St Louis-CUN Cancun
8h 22m1 stop Houston George Bush Intcntl
$430United Airlines
Thu, Oct 22 - Mon, Oct 26
Delta Logo
12:40 pm - 11:54 pmCUN  Cancun-STL Lambert-St Louis
11h 14m2 stops Mexico City Benito Juarez Atlanta Hartsfield-Jackson
Delta Logo
10:14 am - 7:55 pmSTL  Lambert-St Louis-CUN Cancun
9h 41m1 stop Atlanta Hartsfield-Jackson
$430Delta
Wed, Dec 23 - Sat, Jan 2
Delta Logo
2:05 pm - 10:10 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
8h 05m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:05 am - 8:20 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
13h 15m1 stop Salt Lake City
$595Delta
Booking Insights

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

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

What is the cheapest flight to St. Louis?

In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Puerto Vallarta, at $369 return. The most popular connection is from Mexico City to St. Louis and KAYAK users have found round-trip deals for as low as $381 in the last 5 days.

What is the cheapest day to fly to St. Louis?

Based on KAYAK data, the cheapest day to fly to St. Louis is Saturday where round-trip tickets can be as cheap as $243. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $613 on average.

What is the cheapest month to fly to St. Louis?

The cheapest month for flights to St. Louis is May, where tickets cost $504 on average for return flights. On the other hand, the most expensive months are April and June, where the average cost of tickets from Mexico is $757 and $721 respectively. For one-way flights, the best month to travel is June with an average price of $299.

What is the cheapest time of day to fly to St. Louis?

The cheapest time of day to fly to St. Louis is generally in the afternoon, when round-trip flights cost $188 on average. The most expensive time of day to fly to St. Louis is generally in the evening, which is peak travel time and where the average cost of a ticket is $489.

Good to know

Low season

October

Cheapest flight

$127
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Puerto Vallarta to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Puerto Vallarta, at $369 return. The most popular connection is from Mexico City to St. Louis and KAYAK users have found round-trip deals for as low as $381 in the last 5 days.

  • How far is Lambert-St Louis Airport from central St. Louis?

    The distance between Lambert-St Louis Airport and downtown St. Louis is 13 miles.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How much is a flight to St. Louis?

    On average, a flight to St. Louis costs $414. The cheapest price found on KAYAK in the last 2 weeks cost $239 and departed from Cancun Airport.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 3,474 direct flights from within Mexico to St. Louis. The most common day for departures is Sunday, with 19% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Looking for cheap airfare to St. Louis? 25% of our users found round-trip tickets to St. Louis for the following prices or less: From Cancun $346
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top 3 airlines serving from Mexico to St. Louis

 
Need help choosing which airline to fly with 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 8568 reviews
7.8Comfort
8.5Crew
8.1Boarding
7.2Food
7.8Entertainment
Airline reviews

The internet was spotty and I was unable to watch any movies on my iPad; the flight was fine otherwise

8.0 ExcellentLaToya, Aug 2026
Read more Delta reviews

The internet was spotty and I was unable to watch any movies on my iPad; the flight was fine otherwise

The plane was very warm the entire time, despite my vents being open. Additionally, we didn't have internet on our personal devices

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

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

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

On 2 different flights the wifi was horrible and there was no drink or snack service.

There was no FREE wi-fi nor entertainment screens at all.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

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.

The rear seat on the second leg should be illegal. There’s no way you should make somebody sit that close to the washroom. Very awkward.

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

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

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

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

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.

My ATL–CVG Frontier flight was disappointing due to both an operational issue and unprofessional customer service. After everyone had boarded and the aircraft had pushed back from the gate, we were delayed because the passenger count did not match the flight manifest. The crew counted passengers approximately six times before the aircraft returned to the gate and gate agents boarded to help resolve the discrepancy. We were ultimately advised that a family had been allowed to board but not all of their boarding passes had been properly scanned. This resulted in a departure delay of nearly an hour. I did appreciate that the pilot kept passengers informed and tried to reassure us that some of the delay could be recovered during the flight. My greater concern was the customer-service experience. I am a Frontier Elite Platinum member and was seated within the first five rows. When I boarded, the overhead bins near my seat were already closed. I opened two bins to see whether my small backpack would fit. A female flight attendant sharply told me that a closed bin meant it was full, although the second bin clearly had available space. When I tried to ask whether I could simply place my backpack in that available space, she ignored me. Later, while the gate agents were working to resolve the passenger-count problem, I heard the same flight attendant make jokes about how many gate agents it takes to count passengers. She then made unnecessary comments about the male gate agent doing the count, men thinking they can do things better than women, and women knowing better and outliving men. Later in the flight, she also commented that passengers should know that the first thing they need to do is always be nice to the flight attendants. Courtesy absolutely should go both ways. Flight attendants deserve respect from passengers, but passengers also deserve respectful and professional treatment from the crew. Joking about colleagues who were actively trying to correct an operational problem, making gender-based comments in front of passengers, and being dismissive toward a passenger asking a simple baggage question were unnecessary and unprofessional. I fly enough to understand that delays and mistakes happen. What determines the quality of the experience is how those situations are handled. Unfortunately, the customer-service attitude on this flight made an already frustrating operational delay considerably worse.

Did not get on the flight, they had a gate change and my app never updated me! Trying to get flight credit

Flight was delayed by about an hour, once we arrived at LAX we had to take a shuttle to the baggage claim - it was completely disorganized. The agents at the shuttles were rude and unable to provide any information. Frontier charges extra for everything from bags to drinks - at the end it ends up being more expensive than flying the better airlines

Sat in the airport waiting for my flight for 5 hours. Finally got on the plane only to be thrown off and told that my flight was cancelled. Zero customer service. Nobody spoke to us. Just the worst

When I was boarding my departure from Raleigh to Orlando I was inappropriately scolded by a female dog named Mia because I didn’t pay in advance for my carry on bag ($75). Frontiers website is confusing regarding pre-paying for carryons so it was a simple mistake. I also had paid for “upfront plus” meaning me and my son were seated in the front row with no one in the middle seat ($450 upgrade). When we were boarding Mia said “sir, you didn’t pay for your carryon” in a not so polite tone and told me to get out of line and come back to the counter to pay for my carryon. The way they had the retractable rope left me no room to circle back without making the people behind me move so I just stood there and then she said a second time “sir!! Go pay for your carryon” in an embarrassing tone. I then moved their rope so I could get back to the counter when a second female dog then asked “are you done!?!?” because I had said “do you want me to bulldoze the people behind me?” I then said you do realize I paid over $400 for upfront plus so I was certainly not trying to sneak a carryon bag without paying. Long story short, I am soooo done with discount airlines!!! By the time you pay for all the “extras” you might as well have paid for Delta Southwest or American! Frontier airlines sucks and I was embarrassed by a female dog named Mia!!!

Zero issues with this flight. Crew was outstanding and flight was super. Plane was clean and fine. The seats need more padding and water should be provided without cost. I recognize it's Frontier but there are some things that should still be part of the flight. But still very satisfied with the experience and quality.

Very delayed with little to no communication from the captain or flight crew. All announcements made were not audibly understood by passengers. Very poor communication. After arrival it took approximately 20 minutes to get a jet bridge to the plane.

I didn’t have any food or check out the entertainment so there should be ‘not applicable’ option. Instead I chose ‘okay’. Anyway, this was my first ever Frontier flight! I was pleased with the new options for Zone1 (exit row seat, carryon included, first to board, etc) and was surprised at seat comfort from the stories I’ve heard/read.

The experience was terrible. The flight boarded late, then after leaving the gate the plane had had to return to the gate for fuel. After 2 hours on the plane, the flight was canceled. The reasons given for the cancelation didn't sound truthful. and different reasons were given. My 15 year old daughter was flying alone on this flight. When they all disembarked the plane she kept asking the crew what she was supposed to do. No one even gave her the courtesy of a response. No one. It took another 4.75 hrs to be out of customs and baggage. She was re-booked the following day. That flight departed 2 hours late. After all of that, they offered a measly $100 flight voucher with an expiry date of 3 months! All in all a terrible experience. We won't be using Frontier again in the future.

There was an extra, unaccounted for passenger on the plane that delayed take off by 1.5 hours (which we boarded for 0.5 hours later than scheduled), ultimately was never found nor removed, then the plane diverted a storm and added another 0.5 hours to the flight, turning this 3.5 hour flight into a 6 hour flight.

Traveling to a place near St. Louis?

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