$167 Find Cheap Flights from Mexico to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 4/9. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
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Cheap Flights from Mexico to St. Louis

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

週四, 4月 16 - 週一, 4月 20
Frontier Logo
11:48 am - 3:19 pm
CUN
-
STL
3h 31mnonstop
Frontier Logo
6:00 am - 9:17 am
STL
-
CUN
3h 17mnonstop
$265Frontier
週四, 4月 16 - 週一, 4月 20
Frontier Logo
11:48 am - 3:19 pm
CUN
-
STL
3h 31mnonstop
Frontier Logo
6:00 am - 9:17 am
STL
-
CUN
3h 17mnonstop
$266Frontier
週四, 4月 16 - 週一, 4月 20
Frontier Logo
11:48 am - 3:19 pm
CUN
-
STL
3h 31mnonstop
Frontier Logo
6:00 am - 9:17 am
STL
-
CUN
3h 17mnonstop
$268Frontier
週三, 4月 29 - 週三, 5月 13
Aeromexico Logo
9:12 am - 11:36 pm
CUN
-
STL
14h 24m
2 stops
Aeromexico Logo
10:49 am - 11:45 pm
STL
-
CUN
12h 56m
2 stops
$305Aeromexico
週四, 4月 16 - 週一, 4月 20
Aeromexico Logo
1:50 pm - 11:36 pm
CUN
-
STL
9h 46m
1 stop
Aeromexico Logo
7:25 am - 8:15 pm
STL
-
CUN
12h 50m
1 stop
$306Aeromexico
週三, 4月 15 - 週一, 4月 20
Multiple Airlines Logo
6:20 am - 10:30 am
MEX
-
STL
27h 10m
2 stops
Multiple Airlines Logo
8:17 pm - 5:30 pm
STL
-
MEX
22h 13m
1 stop
$388Multiple Airlines
週四, 4月 23 - 週六, 4月 25
United Airlines Logo
1:18 pm - 8:25 am
PVR
-
STL
18h 07m
2 stops
United Airlines Logo
4:49 pm - 11:10 am
STL
-
PVR
19h 21m
1 stop
$429United Airlines
週五, 5月 1 - 週五, 5月 8
Multiple Airlines Logo
11:30 am - 7:32 pm
MTY
-
STL
31h 02m
2 stops
Multiple Airlines Logo
8:08 pm - 6:05 pm
STL
-
MTY
22h 57m
1 stop
$429Multiple Airlines
週四, 4月 23 - 週六, 4月 25
United Airlines Logo
12:19 pm - 9:52 pm
PVR
-
STL
8h 33m
1 stop
United Airlines Logo
7:45 am - 11:10 am
STL
-
PVR
28h 25m
2 stops
$431United Airlines
週五, 5月 1 - 週五, 5月 8
Delta Logo
9:17 am - 11:13 pm
PVR
-
STL
12h 56m
2 stops
Delta Logo
7:15 am - 7:20 pm
STL
-
PVR
13h 05m
2 stops
$477Delta
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?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Cancún, at $265 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $285 in the last 3 days.

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

The average price of all round-trip flights to St. Louis clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to St. Louis is Tuesday where round-trip tickets can be as cheap as $189. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $451 on average.

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

The average price for all round-trip flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to St. Louis is generally in the morning, when round-trip flights cost $196 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 $372.

Good to know

Low seasonNovember
Cheapest flight$160
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Cancun to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Cancún, at $265 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $285 in the last 3 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 $376. The cheapest price found on KAYAK in the last 2 weeks cost $275 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.

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 $328
  • 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 airline flying from Mexico to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Mexico to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
7.4
United AirlinesOverall score based on 9435 reviews
7.7Boarding
7.3Comfort
8.1Crew
7.1Entertainment
6.6Food
Airline reviews

OK, we were delayed and had to de plane and reboard.

6.0 GoodJamie, Mar 2026
LAX - EWR
Read more United Airlines reviews

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

Terrible experience! delay 2 time and say i dont have ticket

Both my flight where delayed Had 25min to make it to my transfer flight

Would've been great if Lufthansa union cockpit pilots didn't strike for 2 days and caused a chaos to my returning plans to USA, and then after rebooking a flight 2 days later tge plane departed 35 min later. So I did not have a good experience.

Everything was on time and service on the flight was great!

The boarding in Buenos Aires (at the on ramp) was not great. They had to check every carry on. Not a United problem but was a Buenos Aires problem.

Staff and aircraft were good. However, weather in Houston lee to a ground stop. We were looking at circling behind three other planes until the stop was lifted. Pilot said we didn’t have enough fuel for that. So we flew on to New Orleans as the closest port with immigration and customs staff. Landed there and sat in the plane for two hours plus while staff was sorted. Turned away by ICE. Waited for pilots to be switched out, but after they were approved by ICE. Then had to wait to get a runway because so many planes were ahead of us. Finally took off and flew back to Houston. We all missed our connecting flights because it took too long. Hotel voucher from United was only a link to booking site. Total BS. Finally got a flight out the next day after a night without sleep because all the Houston hotels were booked by rodeo and spring break crowds.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis