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Cheap flights from St. Louis to Mexico from $94

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Mexico departing on 4/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Mexico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m
1 stop
Frontier Logo
12:15 pm - 11:19 pm
CUN
-
STL
11h 04m
1 stop
$328Frontier
Wed, Mar 4 - Mon, Mar 9
Multiple Airlines Logo
8:17 pm - 12:20 pm
STL
-
CUN
15h 03m
2 stops
Multiple Airlines Logo
10:01 am - 6:51 am
CUN
-
STL
21h 50m
1 stop
$330Multiple Airlines
Sat, Feb 21 - Sun, Mar 1
Delta Logo
7:00 am - 2:37 pm
STL
-
SJD
8h 37m
1 stop
Delta Logo
3:42 pm - 12:25 am
SJD
-
STL
7h 43m
1 stop
$409Delta
Sun, Mar 1 - Wed, Mar 4
Delta Logo
6:10 am - 3:51 pm
STL
-
SJD
10h 41m
2 stops
Delta Logo
1:05 pm - 11:23 pm
SJD
-
STL
9h 18m
2 stops
$413Delta
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
6:00 am - 11:43 am
STL
-
SJD
6h 43m
1 stop
United Airlines Logo
2:11 pm - 10:14 pm
SJD
-
STL
7h 03m
1 stop
$433United Airlines
Tue, Feb 24 - Tue, Mar 3
Southwest Logo
6:15 am - 11:20 am
STL
-
SJD
7h 05m
1 stop
Southwest Logo
10:45 am - 11:55 pm
SJD
-
STL
11h 10m
1 stop
$439Southwest
Sun, May 17 - Fri, May 22
Southwest Logo
6:15 am - 11:20 am
STL
-
SJD
7h 05m
1 stop
Southwest Logo
10:45 am - 10:40 pm
SJD
-
STL
9h 55m
2 stops
$443Southwest
Sun, May 17 - Fri, May 22
American Airlines Logo
5:12 am - 1:20 pm
STL
-
SJD
9h 08m
1 stop
American Airlines Logo
4:28 pm - 8:55 am
SJD
-
STL
15h 27m
2 stops
$449American Airlines
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
11:06 am - 2:44 pm
STL
-
CZM
28h 38m
1 stop
American Airlines Logo
3:11 pm - 8:50 am
CZM
-
STL
16h 39m
1 stop
$463American Airlines
Mon, May 18 - Fri, May 22
United Airlines Logo
10:00 am - 5:52 pm
STL
-
MID
8h 52m
2 stops
United Airlines Logo
7:00 am - 10:16 pm
MID
-
STL
14h 16m
1 stop
$526United Airlines
Tue, Mar 10 - Tue, Mar 17

Volaris flights from St. Louis to Mexico

Our best Volaris deals on St. Louis to Mexico flight tickets
Volaris
Apr 23
STL6:00 amLambert-St Louis
11h 40m
1 stop
MEX4:40 pmMexico City Benito Juarez
Apr 27
MEX8:45 pmMexico City Benito Juarez
17h 30m
1 stop
STL3:15 pmLambert-St Louis
$447
Volaris
Jan 31
STL6:00 amLambert-St Louis
17h 40m
1 stop
MEX11:40 pmMexico City Benito Juarez
Feb 1
MEX11:10 amMexico City Benito Juarez
12h 23m
1 stop
STL11:33 pmLambert-St Louis
$656

Air Canada flights from St. Louis to Mexico

Our best Air Canada deals on St. Louis to Mexico flight tickets
Air Canada
Jan 28
STL4:05 pmLambert-St Louis
28h 10m
1 stop
CUN9:15 pmCancun
Jan 30
CUN10:10 pmCancun
18h 19m
1 stop
STL3:29 pmLambert-St Louis
$422
Air Canada
Jan 29
STL4:05 pmLambert-St Louis
8h 45m
1 stop
MEX12:50 amMexico City Benito Juarez
Jan 30
MEX1:05 amMexico City Benito Juarez
14h 24m
1 stop
STL3:29 pmLambert-St Louis
$542

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Mexico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from St. Louis to Mexico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 3/4

8:17 pm-8:51 am

1 stop11h 34m

Cancun

Mon 3/9

12:15 pm-11:19 pm

1 stop11h 04m

$328

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 2/21

8:17 pm-12:20 pm

2 stops15h 03m

Cancun

Sun 3/1

10:01 am-6:51 am

1 stop21h 50m

$330

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Sun 3/1

7:00 am-2:37 pm

1 stop8h 37m

San José del Cabo Los Cabos

Wed 3/4

3:42 pm-12:25 am

1 stop7h 43m

$409

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Wed 2/25

6:10 am-3:51 pm

2 stops10h 41m

San José del Cabo Los Cabos

Tue 3/3

1:05 pm-11:23 pm

2 stops9h 18m

$413

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Tue 2/24

6:00 am-11:43 am

1 stop6h 43m

San José del Cabo Los Cabos

Tue 3/3

2:11 pm-10:14 pm

1 stop7h 03m

$433

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Sun 5/17

6:15 am-11:20 am

1 stop7h 05m

San José del Cabo Los Cabos

Fri 5/22

10:45 am-11:55 pm

1 stop11h 10m

$439

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Sun 5/17

6:15 am-11:20 am

1 stop7h 05m

San José del Cabo Los Cabos

Fri 5/22

10:45 am-10:40 pm

2 stops9h 55m

$443

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Tue 2/24

5:12 am-1:20 pm

1 stop9h 08m

San José del Cabo Los Cabos

Tue 3/3

4:28 pm-8:55 am

2 stops15h 27m

$449

St. LouisCozumel

STL - CZM

STLCZM

Lambert-St Louis

Mon 5/18

11:06 am-2:44 pm

1 stop28h 38m

Cozumel

Fri 5/22

3:11 pm-8:50 am

1 stop16h 39m

$463

St. LouisMérida

STL - MID

STLMID

Lambert-St Louis

Tue 3/10

10:00 am-5:52 pm

2 stops8h 52m

Mérida Rejon

Tue 3/17

7:00 am-10:16 pm

1 stop14h 16m

$526

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Mexico from

How to get the cheapest flight ticket from St. Louis to Mexico

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Mexico?

If you’re not able to fly to Mexico in September, then October is your next best option. Flight prices from St. Louis to Mexico during October average around $402.

What is the cheapest day to depart on your flight to Mexico?

The cheapest day to depart on your flight to Mexico is on a Monday when prices can be found for as low as $390. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $490. These prices are subject to change though, so be sure to set up a Price Alert for flights to Mexico.

What is the cheapest time of day to depart on your flight to Mexico?

Our data shows that the cheapest St. Louis to Mexico flights are usually those with departure times in the morning. Our users have found flights to Mexico in the morning for as low as $427. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $627 on average. Flights to Mexico from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Lambert-St Louis to Mexico flight route?

Fly from Lambert-St Louis to Cancun for the best Lambert-St Louis - Mexico flight prices

How far in advance should I book a flight to Mexico?

You are more likely to see cheaper flights to Mexico from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Mexico for around $467 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Mexico from St. Louis for as low as $385 on momondo.

What cabin class options are available on Lambert-St Louis to Mexico flights?

There are 2 cabin classes available to choose from on Lambert-St Louis to Mexico flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Mexico flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Mexico.

Cheap St. Louis to Mexico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Mexico

Best Price Found

$282

Fastest flight time

3h 05m

Direct flights

Every day

Airports in Mexico

129 airports
The best one-way flight to Mexico from St. Louis in the past 72 hours is $282. The best round-trip flight deal from St. Louis to Mexico found on momondo in the last 72 hours is $413.
The fastest flight from St. Louis to Mexico takes 3h 05m
Direct flights go from St. Louis to Mexico every day.
There are 129 airports in Mexico. From St. Louis there are direct flights to Cancun (CUN).
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Mexico?

    Prices for flights from Lambert-St Louis Airport to Mexico are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Mexico?

  • How old do you have to be to fly from Lambert-St Louis Airport to Mexico?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Mexico.

  • What documentation or ID do you need to fly to Mexico?

    The travel and health documents you'll need for your trip to Mexico may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Mexico. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Mexico?

Best airlines flying from St. Louis to Mexico

Compare and see reviews for airlines that fly from St. Louis to Mexico with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $130Free CancellationRating
6.3
8,383 reviews
Search Spirit Airlines flights
VolarisPriceFrom $174Free CancellationRating
6.6
1,172 reviews
Search Volaris flights
DeltaPriceFrom $179Free CancellationRating
7.9
8,116 reviews
Search Delta flights
FrontierPriceFrom $195Free CancellationRating
5.7
3,057 reviews
Search Frontier flights
AeromexicoPriceFrom $196Free CancellationRating
7.4
1,589 reviews
Search Aeromexico flights
United AirlinesPriceFrom $330Free CancellationRating
7.4
9,203 reviews
Search United Airlines flights
SouthwestPriceFrom $419Free CancellationRating
8.0
4,268 reviews
Search Southwest flights
American AirlinesPriceFrom $423Free CancellationRating
7.2
11,190 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $527Free CancellationRating
8.0
11,792 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Mexico?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Mexico from St. Louis.

Can I find flights from St. Louis to Mexico with flexible booking policies on momondo?

Yes. All flights to Mexico from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Mexico?

momondo helps you find the best flight between St. Louis and Mexico by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Mexico right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Mexico flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Mexico

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Popular flights according to clicks in the last 7 days on momondo
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