$139 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 5/23. 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

Thu, May 14 - Sun, May 17
Aeromexico Logo
12:45 pm - 9:38 pm
CUN
-
STL
8h 53m
1 stop
Aeromexico Logo
9:15 am - 8:16 pm
STL
-
CUN
11h 01m
1 stop
$310Aeromexico
Wed, Jun 10 - Wed, Jun 17
Delta Logo
8:00 am - 10:18 pm
CUN
-
STL
14h 18m
1 stop
Delta Logo
9:21 am - 8:25 pm
STL
-
CUN
11h 04m
1 stop
$311Delta
Thu, May 14 - Sun, May 17
United Airlines Logo
2:10 pm - 8:43 pm
CUN
-
STL
30h 33m
1 stop
United Airlines Logo
7:45 am - 2:26 pm
STL
-
CUN
6h 41m
1 stop
$373United Airlines
Tue, May 12 - Sun, Jul 12
United Airlines Logo
5:22 pm - 2:32 pm
CUN
-
STL
21h 10m
2 stops
United Airlines Logo
6:00 am - 2:26 pm
STL
-
CUN
8h 26m
1 stop
$383United Airlines
Tue, Jun 30 - Sat, Aug 29
Frontier Logo
11:05 am - 12:09 am
MEX
-
STL
12h 04m
1 stop
Frontier Logo
3:33 pm - 10:45 pm
STL
-
MEX
8h 12m
1 stop
$387Frontier
Thu, Jun 25 - Mon, Jun 29
Frontier Logo
11:02 am - 6:18 pm
CUN
-
STL
7h 16m
1 stop
Frontier Logo
6:30 am - 9:49 am
STL
-
CUN
3h 19mnonstop
$389Frontier
Tue, Jun 16 - Sun, Jun 21
Multiple Airlines Logo
11:05 am - 12:09 am
MEX
-
STL
12h 04m
1 stop
Multiple Airlines Logo
1:20 pm - 11:55 pm
STL
-
MEX
11h 35m
1 stop
$429Multiple Airlines
Sun, May 31 - Wed, Jun 3
Multiple Airlines Logo
11:05 am - 11:57 pm
MEX
-
STL
11h 52m
1 stop
Multiple Airlines Logo
5:27 pm - 10:15 pm
STL
-
MEX
29h 48m
2 stops
$432Multiple Airlines
Tue, May 12 - Mon, Aug 31
Volaris Logo
8:45 pm - 2:39 pm
MEX
-
STL
16h 54m
1 stop
Volaris Logo
3:33 pm - 10:45 pm
STL
-
MEX
8h 12m
1 stop
$461Volaris
Tue, May 12 - Fri, Aug 28
Volaris Logo
8:45 pm - 2:39 pm
MEX
-
STL
16h 54m
1 stop
Volaris Logo
3:33 pm - 10:45 pm
STL
-
MEX
8h 12m
1 stop
$462Volaris
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 $310 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 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 Friday where round-trip tickets can be as cheap as $206. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $514 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 $206 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.

What is a good deal for flights to St. Louis?

If you’re looking for cheap airfare to St. Louis, 25% of our users found tickets to St. Louis for the following prices or less: From Cancun $397 round-trip.

Find deals

Good to know

Low seasonNovember
Cheapest flight$139
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 20% 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 $310 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 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 $384. The cheapest price found on KAYAK in the last 2 weeks cost $215 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 $330
  • 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 9680 reviews
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

4.0 OkayMichael, Apr 2026
SNA - DEN
Read more United Airlines reviews

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

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

St. Louis (STL)