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$107+ Cheap flights from St. Louis (STL) to Mexico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CUN
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from St. Louis to Mexico

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Mexico (MX0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$275
(CheapOair)

One-way from

$107
(Cheapflightsfares)

Popular in

December

Cheapest in

May

Average price

$574

Good round-trip deal

$430 or less

Good one-way deal

$256 or less
Provider with most accurate pricing for Lambert-St Louis-Mexico City Benito Juarez flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Mexico City Benito Juarez flights.
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From Lambert-St Louis to Mexico
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One-way flight from Lambert-St Louis to Mexico
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Highest demand for flights based on searches. 6% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Mexico.
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Price to beat on a one-way flight from Lambert-St Louis to Mexico.
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Find flight deals from St. Louis to Mexico

Cheapest flights from St. Louis to Mexico
Explore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This CheapOair deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/16:47 pmSTL - CUN
1 stop16h 30mMultiple Airlines
Sat 4/511:46 amCUN - STL
Nonstop3h 26mMultiple Airlines
Deal found 1/30$275
This CheapOair deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/234:00 pmSTL - CUN
1 stop19h 11mSpirit Airlines
Wed 2/261:16 pmCUN - STL
1 stop26h 26mSpirit Airlines
Deal found 1/30$281
This Kiwi.com deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/247:04 pmSTL - CUN
1 stop17h 51mFrontier
Thu 2/271:12 pmCUN - STL
1 stop11h 32mFrontier
Deal found 1/30$287
This Kiwi.com deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/227:04 pmSTL - PVR
1 stop15h 25mMultiple Airlines
Mon 2/246:15 pmPVR - STL
2 stops39h 01mMultiple Airlines
Deal found 1/30$356
This Cheapflightsfares deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/76:25 amSTL - CUN
Nonstop3h 25mVolaris
Tue 2/1112:21 pmCUN - STL
Nonstop3h 23mVolaris
Deal found 1/30$362
This Frontier deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/196:43 pmSTL - GDL
2 stops20h 14mFrontier
Wed 2/268:21 amGDL - STL
2 stops15h 22mFrontier
Deal found 1/30$379
This Kiwi.com deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:20 pmSTL - GDL
1 stop24h 19mMultiple Airlines
Wed 2/268:25 amGDL - STL
1 stop15h 18mMultiple Airlines
Deal found 1/30$385
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/65:24 pmSTL - MEX
1 stop26h 21mMultiple Airlines
Tue 3/1111:10 amMEX - STL
1 stop11h 39mMultiple Airlines
Deal found 1/29$395
This Delta deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/247:15 amSTL - CUN
2 stops12h 20mDelta
Thu 2/2712:14 pmCUN - STL
2 stops11h 03mDelta
Deal found 1/30$405
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/77:09 pmSTL - PVR
1 stop15h 25mFrontier
Sun 3/910:49 amPVR - STL
1 stop21h 27mFrontier
Deal found 1/29$428
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/266:00 amSTL - QRO
1 stop9h 35mMultiple Airlines
Wed 3/510:55 pmQRO - STL
2 stops24h 54mMultiple Airlines
Deal found 1/29$435
This Air Canada deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/303:50 pmSTL - MEX
1 stop8h 55mAir Canada
Thu 2/61:25 pmMEX - STL
1 stop25h 41mAir Canada
Deal found 1/29$453

Find flights from St. Louis to Mexico within your budget

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, Cheapflights users made 2,558,603 searches. Data last updated January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 4/1

6:47 pm-11:17 am

1 stop16h 30m

Cancun

Sat 4/5

11:46 am-3:12 pm

Nonstop3h 26m

$275

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 2/9

4:28 pm-12:11 pm

1 stop18h 43m

Cancun

Wed 2/12

1:16 pm-2:42 pm

1 stop26h 26m

$281

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 2/24

7:04 pm-1:55 pm

1 stop17h 51m

Cancun

Thu 2/27

1:12 pm-11:44 pm

1 stop11h 32m

$287

St. LouisPuerto Vallarta

STL - PVR

STLPVR

Lambert-St Louis

Sat 2/22

7:04 pm-10:29 am

1 stop15h 25m

Puerto Vallarta Ordaz

Mon 2/24

6:15 pm-9:16 am

2 stops39h 01m

$356

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 2/10

6:25 am-10:50 am

Nonstop3h 25m

Cancun

Wed 2/12

12:21 pm-2:44 pm

Nonstop3h 23m

$362

St. LouisGuadalajara

STL - GDL

STLGDL

Lambert-St Louis

Wed 2/19

6:43 pm-2:57 pm

2 stops20h 14m

Guadalajara Miguel Hidal

Wed 2/26

8:21 am-11:43 pm

2 stops15h 22m

$379

St. LouisGuadalajara

STL - GDL

STLGDL

Lambert-St Louis

Wed 2/19

5:20 pm-5:39 pm

1 stop24h 19m

Guadalajara Miguel Hidal

Wed 2/26

8:25 am-11:43 pm

1 stop15h 18m

$385

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 3/6

5:24 pm-7:45 pm

1 stop26h 21m

Mexico City Benito Juarez

Tue 3/11

11:10 am-11:49 pm

1 stop11h 39m

$395

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 2/23

10:59 am-12:58 am

2 stops12h 59m

Cancun

Wed 2/26

5:35 pm-11:36 pm

1 stop7h 01m

$405

St. LouisSantiago de Querétaro

STL - QRO

STLQRO

Lambert-St Louis

Wed 2/26

6:00 am-3:35 pm

1 stop9h 35m

Santiago de Querétaro

Wed 3/5

10:55 pm-11:49 pm

2 stops24h 54m

$435

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis to Mexico

Have a flexible travel schedule? Discover the best time to fly to Mexico from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Mexico

Get recent, data-driven insights about flights from St. Louis to Mexico including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Mexico?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $360). Flying from St. Louis to Mexico in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to MX?

Find hourly flight availability from St. Louis to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

When flying from St. Louis to Mexico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from St. Louis to Mexico

Explore weekly flight availability from St. Louis to Mexico. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 30, 2025.

The most flights from STL to MX0 are scheduled on a Monday (2 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Mexico by month

Plan your trip to Mexico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Mexico ranges from 0.0 - 4.7 inches per month. July is typically the wettest month, when rainfall can reach 4.7 in. January is typically the driest time to visit Mexico when rainfall is around 0.0 in.

Temperature in Mexico by month

Plan your trip to Mexico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Mexico, use this chart to help with planning. For those seeking warmer temperatures, May is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 55.4 F).

Reviews of airlines servicing Mexico

Get insights into the airlines that provide service to Mexico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Mexico. Reviews last updated January 30, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from St. Louis to Mexico. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,688 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Aeromexico
7.5
Good
1,837 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Mexico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Mexico?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Mexico.

  • How popular is this St. Louis to Mexico flight route?

    Within the past month, 17 users have taken a look at flights from Lambert-St Louis to Mexico.

  • What are the cheapest airlines to fly from St. Louis to Mexico one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $107. Users have also found prices from $111 and $185 on Frontier and Volaris, respectively.

  • What are the most popular routes from St. Louis to Mexico?

    The most popular route from St. Louis to Mexico is Lambert-St Louis - Cancun. You may also consider Lambert-St Louis - Cozumel or Lambert-St Louis - San José del Cabo Los Cabos.

  • What are the most reliable airlines from St. Louis to Mexico?

    The top 3 most reliable airlines when flying from St. Louis to Mexico are Frontier (78%), American Airlines (78%) and Southwest (73%).

  • What are the cheapest flights from St. Louis to Mexico?

    The cheapest flight price from St. Louis to Mexico is $190. On average you can expect to pay $458. The most popular route, (Lambert-St Louis - Cancun), can usually be booked for $302.

  • Can I find deals for flights from St. Louis to Mexico that include hotel bookings?

    Yes. In addition to deals on St. Louis to Mexico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Mexico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Mexico.

  • Can I find deals for business class flights from St. Louis to Mexico?

    Yes. Cheapflights offers flight deals from St. Louis to Mexico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Mexico?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $360). Flying from St. Louis to Mexico in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for St. Louis to Mexico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from St. Louis to Mexico

Discover the top 9 airlines that operate flights from St. Louis to Mexico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$100Average$275FlexibilityNo cancel feeOn-time65%
VolarisCheapest$224Average$452FlexibilityNo cancel feeOn-time79%
FrontierCheapest$309Average$552FlexibilityNo cancel feeOn-time62%
AeromexicoCheapest$372Average$505FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$386Average$533FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$387Average$610FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$398Average$492FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$413Average$582FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$493Average$750FlexibilityNo cancel feeOn-time63%
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