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St. Louis

$148+ Cheap flights from Mexico to St. Louis (STL)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
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Cheap flight deals from Mexico to St. Louis

Keep the following information in mind while searching for Mexico to St. Louis flight deals. Data was last updated June 16, 2025.

Round-trip from

$294
(Priceline)

One-way from

$148
(Cheapflightsfares)

Popular in

February

Cheapest in

March

Average price

$642

Good round-trip deal

$206 or less

Good one-way deal

$208 or less
From Mexico to Lambert-St Louis
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One-way flight from Mexico to Lambert-St Louis
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Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Mexico to Lambert-St Louis.
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Price to beat on a one-way flight from Mexico to Lambert-St Louis.
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Find flight deals from Mexico to St. Louis

Cheapest flights from Mexico to St. Louis
Explore the most affordable flight options available from Mexico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2025.

This Priceline deal was found by Cheapflights users on 6/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/310:00 amCUN - STL
1 stop7h 04mSpirit Airlines
Sun 7/66:36 pmSTL - CUN
1 stop14h 19mSpirit Airlines
Deal found 6/16$294
This Priceline deal was found by Cheapflights users on 6/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/412:37 pmCUN - STL
Nonstop3h 25mMultiple Airlines
Sun 7/66:36 pmSTL - CUN
1 stop14h 19mMultiple Airlines
Deal found 6/15$362
This Priceline deal was found by Cheapflights users on 6/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/412:37 pmCUN - STL
Nonstop3h 25mFrontier
Sun 7/66:45 amSTL - CUN
Nonstop3h 17mFrontier
Deal found 6/15$385
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 9/96:05 amPVR - STL
2 stops14h 57mDelta
Tue 9/237:30 amSTL - PVR
1 stop8h 20mDelta
Deal found 6/15$438
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/912:25 pmPVR - STL
2 stops24h 54mUnited Airlines
Tue 9/165:30 pmSTL - PVR
2 stops18h 57mUnited Airlines
Deal found 6/15$440
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/215:35 amCUN - STL
1 stop16h 52mUnited Airlines
Tue 6/245:20 amSTL - CUN
1 stop7h 40mUnited Airlines
Deal found 6/14$452
This Delta deal was found by Cheapflights users on 6/15. 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.
Fri 7/412:39 pmCUN - STL
2 stops10h 48mDelta
Sun 7/66:30 amSTL - CUN
2 stops12h 11mDelta
Deal found 6/15$453
This Mytrip deal was found by Cheapflights users on 6/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/35:45 pmMEX - STL
2 stops22h 19mMultiple Airlines
Thu 7/1010:47 amSTL - MEX
2 stops27h 53mMultiple Airlines
Deal found 6/13$453
This CheapOair deal was found by Cheapflights users on 6/14. 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.
Thu 10/93:10 pmMEX - STL
1 stop24h 42mFrontier
Thu 10/237:52 pmSTL - MEX
1 stop22h 38mFrontier
Deal found 6/14$475
This Air Canada deal was found by Cheapflights users on 6/14. 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.
Fri 6/202:00 pmCUN - STL
1 stop30h 48mAir Canada
Wed 6/251:30 pmSTL - CUN
1 stop23h 30mAir Canada
Deal found 6/14$482
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/76:00 amBJX - STL
3 stops26h 52mMultiple Airlines
Sun 8/1010:47 amSTL - BJX
3 stops31h 00mMultiple Airlines
Deal found 6/15$496
This Delta deal was found by Cheapflights users on 6/15. 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.
Thu 8/712:58 pmBJX - STL
2 stops9h 55mDelta
Sun 8/107:00 amSTL - BJX
2 stops10h 17mDelta
Deal found 6/15$500

Cheapflights Fare Finder

Customize your flight search to find flights from Mexico to St. Louis 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 June 16, 2025.
Use the filters below to find and compare flights from Mexico to St. Louis that are best for you.

Fly from

Mexico

Fly to

St. Louis

Route

Depart

Return

Price

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 7/3

10:00 am-5:04 pm

1 stop7h 04m

Lambert-St Louis

Sun 7/6

6:36 pm-8:55 am

1 stop14h 19m

$294

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 7/4

12:37 pm-4:02 pm

Nonstop3h 25m

Lambert-St Louis

Sun 7/6

6:36 pm-8:55 am

1 stop14h 19m

$362

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 7/4

12:37 pm-4:02 pm

Nonstop3h 25m

Lambert-St Louis

Sun 7/6

6:45 am-10:02 am

Nonstop3h 17m

$385

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Tue 9/9

6:05 am-10:02 pm

2 stops14h 57m

Lambert-St Louis

Tue 9/23

7:30 am-2:50 pm

1 stop8h 20m

$438

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Tue 9/9

12:25 pm-2:19 pm

2 stops24h 54m

Lambert-St Louis

Tue 9/16

5:30 pm-11:27 am

2 stops18h 57m

$440

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 7/4

12:39 pm-11:27 pm

2 stops10h 48m

Lambert-St Louis

Sun 7/6

6:30 am-6:41 pm

2 stops12h 11m

$453

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Thu 7/3

5:45 pm-5:04 pm

2 stops22h 19m

Lambert-St Louis

Thu 7/10

10:47 am-1:40 pm

2 stops27h 53m

$453

LeónSt. Louis

BJX - STL

BJXSTL

León Del Bajio

Thu 8/7

6:00 am-9:52 am

3 stops26h 52m

Lambert-St Louis

Sun 8/10

10:47 am-4:47 pm

3 stops31h 00m

$496

LeónSt. Louis

BJX - STL

BJXSTL

León Del Bajio

Thu 8/7

12:58 pm-11:53 pm

2 stops9h 55m

Lambert-St Louis

Sun 8/10

10:46 am-6:40 pm

1 stop8h 54m

$500

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Tue 7/15

6:30 am-6:53 pm

1 stop11h 23m

Lambert-St Louis

Sun 8/3

6:15 pm-3:40 pm

1 stop22h 25m

$501

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 52 results
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Best time to book a flight from Mexico to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Mexico 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.

Cheapflights Insights

Everything you need to know about your flight from Mexico to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Mexico to St. Louis (average of $311). Flying from Mexico to St. Louis in March is currently the most expensive (average of $356). 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 MX to STL?

Find hourly flight availability from Mexico to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 16, 2025.

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

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 16, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Mexico to St. Louis to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Aeromexico
7.5
Good
1,711 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Mexico to St. Louis. 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 into for flights to St. Louis from Mexico?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Mexico.

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

    One-way options have recently been found by users for as low as $148 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $170 and Delta from $211 one-way.

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

    The most popular flight routes from Mexico to St. Louis are Cancun - Lambert-St Louis, Mexico City Benito Juarez - Lambert-St Louis and Cozumel - Lambert-St Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Mexico to St. Louis 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 Mexico to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Mexico to St. Louis (average of $311). Flying from Mexico to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

Traveling to a place near Mexico?

Book flights to Mexico if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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Alternative routes for Mexico to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Mexico to St. Louis

Discover the top 2 airlines that operate flights from Mexico to St. Louis. 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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$441Average$457FlexibilityNo cancel feeOn-time69%
AeromexicoCheapest$453Average$453FlexibilityNo cancel feeOn-timeN/A

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