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Cheap flights from St. Louis to Mexico from $95

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 1/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
6:00 am - 10:23 am
STL
-
CUN
3h 23mnonstop
Frontier Logo
1:01 pm - 3:29 pm
CUN
-
STL
3h 28mnonstop
$221Frontier
Tue, Jan 6 - Tue, Jan 13
Frontier Logo
9:44 am - 2:15 pm
STL
-
CUN
3h 31mnonstop
Frontier Logo
1:29 pm - 3:57 pm
CUN
-
STL
3h 28mnonstop
$263Frontier
Tue, Jan 13 - Wed, Jan 21
American Airlines Logo
6:00 am - 12:27 pm
STL
-
SJD
7h 27m1 stop
American Airlines Logo
2:57 pm - 10:59 pm
SJD
-
STL
7h 02m1 stop
$384American Airlines
Tue, Jan 13 - Tue, Jan 27
American Airlines Logo
9:25 am - 2:42 pm
STL
-
SJD
6h 17m1 stop
American Airlines Logo
12:50 pm - 10:59 pm
SJD
-
STL
9h 09m2 stops
$389American Airlines
Tue, Jan 13 - Tue, Jan 27
United Airlines Logo
6:00 am - 2:32 pm
STL
-
SJD
9h 32m1 stop
United Airlines Logo
2:11 pm - 10:14 pm
SJD
-
STL
7h 03m1 stop
$391United Airlines
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
6:00 am - 2:32 pm
STL
-
SJD
9h 32m1 stop
United Airlines Logo
2:11 pm - 10:14 pm
SJD
-
STL
7h 03m1 stop
$399United Airlines
Wed, Feb 25 - Tue, Mar 3
Delta Logo
6:00 am - 12:47 pm
STL
-
SJD
7h 47m1 stop
Delta Logo
12:21 pm - 9:34 pm
SJD
-
STL
8h 13m1 stop
$404Delta
Wed, Dec 24 - Wed, Dec 31
Delta Logo
7:20 am - 2:20 pm
STL
-
SJD
8h 00m1 stop
Delta Logo
12:36 pm - 11:25 pm
SJD
-
STL
9h 49m2 stops
$405Delta
Sun, Jan 4 - Fri, Jan 9
Aeromexico Logo
7:10 am - 1:50 pm
STL
-
CZM
6h 40m1 stop
Aeromexico Logo
3:05 pm - 8:37 pm
CZM
-
STL
5h 32m1 stop
$406Aeromexico
Fri, Jan 23 - Fri, Jan 30
Aeromexico Logo
7:10 am - 1:50 pm
STL
-
CZM
6h 40m1 stop
Aeromexico Logo
3:05 pm - 11:37 pm
CZM
-
STL
8h 32m1 stop
$408Aeromexico
Thu, Jan 22 - Thu, Jan 29

Aeromexico flights from St. Louis to Mexico

Our best Aeromexico deals on St. Louis to Mexico flight tickets
Aeromexico
Jan 23
STL7:10 amLambert-St Louis
6h 40m
1 stop
CZM1:50 pmCozumel
Jan 30
CZM3:05 pmCozumel
5h 32m
1 stop
STL8:37 pmLambert-St Louis
$406
Find similar
Aeromexico
Jan 22
STL7:10 amLambert-St Louis
6h 40m
1 stop
CZM1:50 pmCozumel
Jan 29
CZM3:05 pmCozumel
8h 32m
1 stop
STL11:37 pmLambert-St Louis
$408
Find similar
Aeromexico
Dec 24
STL6:00 amLambert-St Louis
8h 15m
1 stop
CZM2:15 pmCozumel
Dec 29
CZM3:30 pmCozumel
8h 12m
1 stop
STL11:42 pmLambert-St Louis
$448
Find similar

Delta flights from St. Louis to Mexico

Our best Delta deals on St. Louis to Mexico flight tickets
Delta
Jan 4
STL7:20 amLambert-St Louis
8h 00m
1 stop
SJD2:20 pmSan José del Cabo Los Cabos
Jan 9
SJD2:50 pmSan José del Cabo Los Cabos
7h 35m
1 stop
STL11:25 pmLambert-St Louis
$400
Find similar
Delta
Dec 24
STL6:00 amLambert-St Louis
7h 47m
1 stop
SJD12:47 pmSan José del Cabo Los Cabos
Dec 31
SJD12:21 pmSan José del Cabo Los Cabos
8h 13m
1 stop
STL9:34 pmLambert-St Louis
$404
Find similar
Delta
Jan 4
STL7:20 amLambert-St Louis
8h 00m
1 stop
SJD2:20 pmSan José del Cabo Los Cabos
Jan 9
SJD12:36 pmSan José del Cabo Los Cabos
9h 49m
2 stops
STL11:25 pmLambert-St Louis
$405
Find similar

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 December 10, 2025.
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

Tue 1/6

6:00 am-10:23 am

Nonstop3h 23m

Cancun

Tue 1/13

1:01 pm-3:29 pm

Nonstop3h 28m

$221

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 1/13

9:44 am-2:15 pm

Nonstop3h 31m

Cancun

Wed 1/21

1:29 pm-3:57 pm

Nonstop3h 28m

$263

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Tue 1/13

6:00 am-12:27 pm

1 stop7h 27m

San José del Cabo Los Cabos

Tue 1/27

2:57 pm-10:59 pm

1 stop7h 02m

$384

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Tue 1/13

9:25 am-2:42 pm

1 stop6h 17m

San José del Cabo Los Cabos

Tue 1/27

12:50 pm-10:59 pm

2 stops9h 09m

$389

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Wed 2/25

6:00 am-2:32 pm

1 stop9h 32m

San José del Cabo Los Cabos

Tue 3/3

2:11 pm-10:14 pm

1 stop7h 03m

$391

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Wed 2/25

6:00 am-2:32 pm

1 stop9h 32m

San José del Cabo Los Cabos

Tue 3/3

2:11 pm-10:14 pm

1 stop7h 03m

$399

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Wed 12/24

6:00 am-12:47 pm

1 stop7h 47m

San José del Cabo Los Cabos

Wed 12/31

12:21 pm-9:34 pm

1 stop8h 13m

$404

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

Sun 1/4

7:20 am-2:20 pm

1 stop8h 00m

San José del Cabo Los Cabos

Fri 1/9

12:36 pm-11:25 pm

2 stops9h 49m

$405

St. LouisCozumel

STL - CZM

STLCZM

Lambert-St Louis

Fri 1/23

7:10 am-1:50 pm

1 stop6h 40m

Cozumel

Fri 1/30

3:05 pm-8:37 pm

1 stop5h 32m

$406

St. LouisCozumel

STL - CZM

STLCZM

Lambert-St Louis

Thu 1/22

7:10 am-1:50 pm

1 stop6h 40m

Cozumel

Thu 1/29

3:05 pm-11:37 pm

1 stop8h 32m

$408

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 $400.

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 $394. 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 $512. 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 evening. Our users have found flights to Mexico in the evening for as low as $367. 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 $470 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 $374 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

$186

Fastest flight time

3h 00m

Direct flights

Every day

Airports in Mexico

1 airport
The best one-way flight to Mexico from St. Louis in the past 72 hours is $186. The best round-trip flight deal from St. Louis to Mexico found on momondo in the last 72 hours is $317.
The fastest flight from St. Louis to Mexico takes 3h 00m
Direct flights go from St. Louis to Mexico every day.
There is 1 airport near Mexico: 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
8,174 reviews
Search Spirit Airlines flights
VolarisPriceFrom $175Free CancellationRating
6.7
1,155 reviews
Search Volaris flights
DeltaPriceFrom $179Free CancellationRating
7.9
8,007 reviews
Search Delta flights
AeromexicoPriceFrom $218Free CancellationRating
7.4
1,645 reviews
Search Aeromexico flights
FrontierPriceFrom $234Free CancellationRating
5.8
3,085 reviews
Search Frontier flights
United AirlinesPriceFrom $330Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
SouthwestPriceFrom $419Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
American AirlinesPriceFrom $438Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $528Free CancellationRating
8.0
11,423 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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