What are the cheapest airlines flying from St. Louis to Mexico City round-trip?

Air Canada, at $440, was found to be the cheapest airline from St. Louis to Mexico City.Alternate airlines to your destination round-trip include Frontier and Aeromexico. These flights start at 30% lower than the current average price 3 months from now.

What is the cheapest day to fly from St. Louis to Mexico City?

Travelers seeking maximum savings on their St. Louis to Mexico City flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Mexico City?

Consider American Airlines, Aeromexico or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Mexico City.

What is the cheapest day to fly round-trip from St. Louis to Mexico City?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 23% when planning your travel around this day of the week.

How far in advance should I book a flight from St. Louis to Mexico City?

To save on the cost of your flight from St. Louis to Mexico City, book at least 20 days before your planned departure. Booking around this time can save you about 56% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $510 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $764.

What is the cheapest month to fly from St. Louis to Mexico City?

May is one of the best times of the year to fly to Mexico City from St. Louis. Prices for May average $629 per person but you can even find prices for as low as $487. The most expensive prices can be found in the month of December. Opting for a May flight can save you 22% on your journey compared to booking in December

Most accurate provider : When it comes to deals on St. Louis-Mexico City flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Mexico City flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from St. Louis-Mexico City flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Mexico City flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Mexico City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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 City.

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

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

$199+ Flights from St. Louis to Mexico City - Compare & Save Big

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Lambert-St Louis to Mexico City Benito Juarez are usually found in May or January, booked 77 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from St. Louis to Mexico City

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$440 (Air Canada)
One-way from	$199 (Kiwi.com)
Popular in	December
Cheapest in	May
Average price	$557

Provider with most accurate pricing for Lambert-St Louis-Mexico City Benito Juarez flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Mexico City Benito Juarez flights.

Search Deals

From Lambert-St Louis to Mexico City Benito Juarez

Search Deals

One-way flight from Lambert-St Louis to Mexico City Benito Juarez

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

Find flight deals from St. Louis to Mexico City

Cheapest flights from St. Louis to Mexico City
Explore the most affordable flight options available from St. Louis to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Fri 5/91:30 pmSTL - MEX

1 stop10h 25mAir Canada

Wed 6/47:10 amMEX - STL

1 stop11h 48mAir Canada

Deal found 4/30

$440

Sat 5/175:45 pmSTL - MEX

1 stop26h 50mMultiple Airlines

Thu 5/2211:05 amMEX - STL

1 stop11h 47mMultiple Airlines

Deal found 4/30

$441

Wed 5/146:00 amSTL - MEX

2 stops13h 15mAeromexico

Mon 5/197:00 amMEX - STL

2 stops12h 49mAeromexico

Deal found 4/30

$488

Sat 5/176:30 amSTL - MEX

2 stops10h 10mUnited Airlines

Thu 5/222:15 pmMEX - STL

1 stop7h 00mUnited Airlines

Deal found 4/30

$505

Fri 5/231:09 pmSTL - MEX

2 stops9h 56mDelta

Mon 5/267:05 amMEX - STL

1 stop8h 30mDelta

Deal found 4/30

$509

Thu 7/38:44 pmSTL - MEX

1 stop27h 11mFrontier

Sun 7/68:10 amMEX - STL

1 stop24h 01mFrontier

Deal found 4/29

$545

Thu 7/35:25 amSTL - MEX

1 stop15h 50mAmerican Airlines

Sun 7/133:30 pmMEX - STL

1 stop7h 58mAmerican Airlines

Deal found 4/30

$573

Thu 6/191:30 pmSTL - MEX

2 stops36h 28mWestJet

Sat 6/211:01 amMEX - STL

2 stops30h 22mWestJet

Deal found 4/30

$1,241

Fri 5/29:40 amSTL - MEX

2 stops18h 25mAvianca

Sun 5/412:40 amMEX - STL

2 stops17h 43mAvianca

Deal found 4/30

$5,586

Best flights from St. Louis to Mexico City
Discover carefully curated flight deals from St. Louis to Mexico City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Fri 5/161:30 pmSTL - MEX

1 stop10h 25mAir Canada

Wed 5/217:10 amMEX - STL

1 stop11h 48mAir Canada

Deal found 4/30

$440

Sat 5/175:45 pmSTL - MEX

1 stop26h 50mMultiple Airlines

Thu 5/2211:05 amMEX - STL

1 stop11h 47mMultiple Airlines

Deal found 4/30

$441

Wed 5/146:38 amSTL - MEX

1 stop11h 42mFrontier

Mon 5/197:55 amMEX - STL

2 stops12h 10mFrontier

Deal found 4/30

$486

Wed 5/146:00 amSTL - MEX

2 stops13h 15mAeromexico

Mon 5/197:00 amMEX - STL

2 stops12h 49mAeromexico

Deal found 4/30

$488

Sat 5/176:30 amSTL - MEX

2 stops10h 10mUnited Airlines

Thu 5/222:15 pmMEX - STL

1 stop7h 00mUnited Airlines

Deal found 4/30

$505

Fri 5/231:09 pmSTL - MEX

2 stops9h 56mDelta

Mon 5/267:05 amMEX - STL

1 stop8h 30mDelta

Deal found 4/30

$509

Thu 7/35:25 amSTL - MEX

1 stop15h 50mAmerican Airlines

Sun 7/133:30 pmMEX - STL

1 stop7h 58mAmerican Airlines

Deal found 4/30

$573

Thu 6/191:30 pmSTL - MEX

2 stops36h 28mWestJet

Sat 6/211:01 amMEX - STL

2 stops30h 22mWestJet

Deal found 4/30

$1,241

Last-minute flights from St. Louis to Mexico City
Discover last-minute flight deals from St. Louis to Mexico City. Data last updated May 1, 2025 and is based on user searches.

Thu 5/14:07 pmSTL - MEX

1 stop26h 23mFrontier

Mon 5/53:45 pmMEX - STL

2 stops41h 14mFrontier

Deal found 5/1

$663

Fri 5/25:26 amSTL - MEX

2 stops10h 04mAmerican Airlines

Mon 5/55:00 amMEX - STL

1 stop10h 22mAmerican Airlines

Deal found 5/1

$977

Fri 5/26:30 amSTL - MEX

2 stops10h 10mUnited Airlines

Mon 5/54:40 amMEX - STL

2 stops10h 07mUnited Airlines

Deal found 5/1

$1,009

Fri 5/29:40 amSTL - MEX

2 stops18h 25mAvianca

Sun 5/412:40 amMEX - STL

2 stops17h 43mAvianca

Deal found 4/30

$5,586

Fri 5/91:30 pmSTL - MEX

1 stop10h 25mAir Canada

Wed 6/47:10 amMEX - STL

1 stop11h 48mAir Canada

Deal found 4/30

$440

Fri 5/99:55 pmSTL - MEX

1 stop24h 15mMultiple Airlines

Tue 6/312:40 amMEX - STL

2 stops15h 05mMultiple Airlines

Deal found 4/30

$472

Wed 5/146:00 amSTL - MEX

2 stops13h 15mAeromexico

Mon 5/197:00 amMEX - STL

2 stops12h 49mAeromexico

Deal found 4/30

$488

Sat 5/175:45 pmSTL - MEX

1 stop26h 50mMultiple Airlines

Thu 5/2211:05 amMEX - STL

1 stop11h 47mMultiple Airlines

Deal found 4/30

$441

Sat 5/176:00 amSTL - MEX

2 stops9h 50mDelta

Thu 5/2212:45 pmMEX - STL

2 stops11h 14mDelta

Deal found 4/30

$505

Fri 5/306:00 amSTL - MEX

2 stops19h 58mWestJet

Tue 6/31:01 amMEX - STL

2 stops34h 03mWestJet

Deal found 4/30

$1,375

One-way flights from St. Louis to Mexico City
Search for one-way flight options from St. Louis to Mexico City. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Thu 5/85:45 pmSTL - MEX

1 stop26h 50mMultiple Airlines

Deal found 4/30

$199

Fri 6/201:30 pmSTL - MEX

1 stop10h 25mAir Canada

Deal found 4/30

$200

Fri 5/96:00 amSTL - MEX

2 stops9h 20mAeromexico

Deal found 4/30

$280

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Mexico City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 5/16

1:30 pm-10:55 pm

1 stop10h 25m

Mexico City Benito Juarez

Wed 5/21

7:10 am-7:58 pm

1 stop11h 48m

$440

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sat 5/17

5:45 pm-7:35 pm

1 stop26h 50m

Mexico City Benito Juarez

Thu 5/22

11:05 am-11:52 pm

1 stop11h 47m

$441

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 5/14

6:38 am-5:20 pm

1 stop11h 42m

Mexico City Benito Juarez

Mon 5/19

7:55 am-9:05 pm

2 stops12h 10m

$486

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 5/14

6:00 am-6:15 pm

2 stops13h 15m

Mexico City Benito Juarez

Mon 5/19

7:00 am-8:49 pm

2 stops12h 49m

$488

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sat 5/17

6:00 am-2:50 pm

2 stops9h 50m

Mexico City Benito Juarez

Thu 5/22

12:45 pm-12:59 am

2 stops11h 14m

$505

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 7/3

5:25 am-8:15 pm

1 stop15h 50m

Mexico City Benito Juarez

Sun 7/13

3:30 pm-12:28 am

1 stop7h 58m

$573

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 9/25

6:15 am-10:45 am

1 stop5h 30m

Mexico City Benito Juarez

Mon 9/29

11:35 am-10:00 pm

1 stop9h 25m

$628

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 6/19

1:30 pm-12:58 am

2 stops36h 28m

Mexico City Benito Juarez

Sat 6/21

1:01 am-8:23 am

2 stops30h 22m

$1,241

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 5/8

5:45 pm-7:35 pm

1 stop26h 50m

$199

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 6/20

1:30 pm-10:55 pm

1 stop10h 25m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 11 results

Compare providers for flights from St. Louis to Mexico City

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Mexico City in May.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Flightnetwork	Price Accuracy-	Trust Score*3 stars
SmartFares	Price Accuracy1 star	Trust Score*1 star
Trip.com	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Mexico City flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Mexico City flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from St. Louis-Mexico City flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Mexico City flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Mexico City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Mexico City

Have a flexible travel schedule? Discover the best time to fly to Mexico City 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.

Cheapflights Insights

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

How far ahead should I book a flight from St. Louis to Mexico City?

The price you pay for your flight from St. Louis to Mexico City may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from St. Louis to Mexico City (average of $400). Flying from St. Louis to Mexico City in December is currently the most expensive (average of $615). 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 MEX?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Mexico City at noon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the afternoon.

Rainfall in Mexico City by month

In terms of precipitation, rainfall in Mexico City 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 City when rainfall is around 0.0 in.

Temperature in Mexico City by month

If weather is an important factor for your trip to Mexico City, 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 City

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,934 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aeromexico

7.5

Good

1,698 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

WestJet

7.2

Good

2,826 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from St. Louis to Mexico City round-trip?
Air Canada, at $440, was found to be the cheapest airline from St. Louis to Mexico City.Alternate airlines to your destination round-trip include Frontier and Aeromexico. These flights start at 30% lower than the current average price 3 months from now.
Can I find deals for flights from St. Louis to Mexico City that include hotel bookings?
Yes. In addition to deals on St. Louis to Mexico City flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Mexico City?
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 City.
Can I find deals for business class flights from St. Louis to Mexico City?
Yes. Cheapflights offers flight deals from St. Louis to Mexico City 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 City?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Mexico City (average of $400). Flying from St. Louis to Mexico City in December is currently the most expensive (average of $615). 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

Valle de Bravo

Taxco

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Other flights to Mexico City

Top 5 airlines flying from St. Louis to Mexico City

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$471	Average$608	FlexibilityNo cancel fee	On-time62%
Aeromexico	Cheapest$487	Average$523	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$510	Average$646	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$514	Average$587	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$527	Average$636	FlexibilityNo cancel fee	On-time71%

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$199+ Cheap flights from St. Louis (STL) to Mexico City (MEX)

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Mexico City with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Mexico City Benito Juarez are usually found in May or January, booked 77 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from St. Louis to Mexico City

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Mexico City

Cheapest flights from St. Louis to Mexico CityExplore the most affordable flight options available from St. Louis to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from St. Louis to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Mexico City that are best for you.

Compare providers for flights from St. Louis to Mexico City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Mexico City in May.

Best time to book a flight from St. Louis to Mexico City

Have a flexible travel schedule? Discover the best time to fly to Mexico City from St. Louis with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from St. Louis to Mexico City?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Mexico City. Price data was last updated on April 25, 2025.

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

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

Find hourly flight availability from St. Louis to Mexico City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Mexico City by month

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

Temperature in Mexico City by month

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

Reviews of airlines servicing Mexico City

Related info for your journey

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

What are the cheapest airlines flying from St. Louis to Mexico City round-trip?

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Mexico City

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Mexico City

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Cheapest flights from St. Louis to Mexico City
Explore the most affordable flight options available from St. Louis to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.