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Cheap flights from Cancún to St. Louis from $211

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cancún to St. Louis departing on 11/12. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Cancún to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:51 pm - 1:10 pmCUN  Cancun-STL Lambert-St Louis
23h 19m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
10:20 am - 11:19 amSTL  Lambert-St Louis-CUN Cancun
24h 59m2 stops Dallas/Fort Worth Santiago de Querétaro
$386Multiple Airlines
Thu, Sep 17 - Thu, Sep 24
Air Canada Logo
9:05 pm - 2:00 pmCUN  Cancun-STL Lambert-St Louis
16h 55m1 stop Toronto Pearson Intl
Air Canada Logo
4:05 pm - 9:40 amSTL  Lambert-St Louis-CUN Cancun
17h 35m1 stop Toronto Pearson Intl
$388Air Canada
Wed, Oct 21 - Wed, Oct 28
Air Canada Logo
9:05 pm - 6:41 pmCUN  Cancun-STL Lambert-St Louis
21h 36m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
4:05 pm - 11:55 amSTL  Lambert-St Louis-CUN Cancun
19h 50m1 stop Toronto Pearson Intl
$391Air Canada
Wed, Oct 21 - Wed, Oct 28
Air Canada Logo
9:05 pm - 2:00 pmCUN  Cancun-STL Lambert-St Louis
16h 55m1 stop Toronto Pearson Intl
Air Canada Logo
8:55 am - 8:10 pmSTL  Lambert-St Louis-CUN Cancun
11h 15m1 stop Toronto Pearson Intl
$392Air Canada
Thu, Sep 17 - Thu, Sep 24
Air Canada Logo
9:05 pm - 2:00 pmCUN  Cancun-STL Lambert-St Louis
16h 55m1 stop Toronto Pearson Intl
Air Canada Logo
8:55 am - 8:10 pmSTL  Lambert-St Louis-CUN Cancun
11h 15m1 stop Toronto Pearson Intl
$393Air Canada
Thu, Sep 17 - Thu, Sep 24
United Airlines Logo
7:51 am - 9:21 pmCUN  Cancun-STL Lambert-St Louis
13h 30m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
5:00 am - 2:37 pmSTL  Lambert-St Louis-CUN Cancun
9h 37m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$429United Airlines
Wed, Oct 21 - Wed, Oct 28
Aeromexico Logo
4:20 pm - 11:18 pmCUN  Cancun-STL Lambert-St Louis
7h 58m1 stop Minneapolis St Paul
Aeromexico Logo
9:00 am - 3:20 pmSTL  Lambert-St Louis-CUN Cancun
5h 20m1 stop Atlanta Hartsfield-Jackson
$430Aeromexico
Thu, Jan 21 - Mon, Jan 25
United Airlines Logo
4:47 pm - 10:06 pmCUN  Cancun-STL Lambert-St Louis
6h 19m1 stop Houston George Bush Intcntl
United Airlines Logo
7:04 pm - 11:25 amSTL  Lambert-St Louis-CUN Cancun
15h 21m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$431United Airlines
Thu, Jan 21 - Mon, Jan 25
Frontier Logo
12:17 pm - 3:34 pmCUN  Cancun-STL Lambert-St Louis
3h 17mnonstop
Frontier Logo
6:10 am - 9:19 amSTL  Lambert-St Louis-CUN Cancun
3h 09mnonstop
$480Frontier
Wed, Oct 21 - Wed, Oct 28

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United Airlines flights from Cancún to St. Louis

Our best United Airlines deals on Cancún to St. Louis flight tickets
United Airlines
Oct 21
CUN7:51 amCancun
13h 30m
2 stops
STL9:21 pmLambert-St Louis
Oct 28
STL5:00 amLambert-St Louis
9h 37m
2 stops
CUN2:37 pmCancun
$429
United Airlines
Jan 21
CUN4:47 pmCancun
6h 19m
1 stop
STL10:06 pmLambert-St Louis
Jan 25
STL7:04 pmLambert-St Louis
15h 21m
2 stops
CUN11:25 amCancun
$431
United Airlines
Jan 21
CUN8:39 amCancun
13h 34m
2 stops
STL9:13 pmLambert-St Louis
Jan 25
STL6:15 amLambert-St Louis
8h 09m
1 stop
CUN3:24 pmCancun
$451

Aeromexico flights from Cancún to St. Louis

Our best Aeromexico deals on Cancún to St. Louis flight tickets
Aeromexico
Jan 21
CUN4:20 pmCancun
7h 58m
1 stop
STL11:18 pmLambert-St Louis
Jan 25
STL9:00 amLambert-St Louis
5h 20m
1 stop
CUN3:20 pmCancun
$430
Aeromexico
Sep 28
CUN7:41 pmCancun
28h 01m
2 stops
STL11:42 pmLambert-St Louis
Oct 5
STL6:00 amLambert-St Louis
17h 38m
2 stops
CUN11:38 pmCancun
$519
Aeromexico
Sep 9
CUN8:00 amCancun
15h 42m
2 stops
STL11:42 pmLambert-St Louis
Sep 14
STL6:00 amLambert-St Louis
19h 30m
2 stops
CUN1:30 amCancun
$587

momondo Fare Finder

 
Customize your flight search to find flights from Cancún 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, momondo users made 832,500 searches. Data last updated August 16, 2026.
Use the filters below to find and compare flights from Cancún to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

1:51 pm-1:10 pm

1 stop23h 19m

Lambert-St Louis

Thu 9/24

10:20 am-11:19 am

2 stops24h 59m

$386

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 10/21

9:05 pm-2:00 pm

1 stop16h 55m

Lambert-St Louis

Wed 10/28

4:05 pm-9:40 am

1 stop17h 35m

$388

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 10/21

9:05 pm-6:41 pm

2 stops21h 36m

Lambert-St Louis

Wed 10/28

4:05 pm-11:55 am

1 stop19h 50m

$391

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

9:05 pm-2:00 pm

1 stop16h 55m

Lambert-St Louis

Thu 9/24

8:55 am-8:10 pm

1 stop11h 15m

$392

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

9:05 pm-2:00 pm

1 stop16h 55m

Lambert-St Louis

Thu 9/24

8:55 am-8:10 pm

1 stop11h 15m

$393

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 10/21

7:51 am-9:21 pm

2 stops13h 30m

Lambert-St Louis

Wed 10/28

5:00 am-2:37 pm

2 stops9h 37m

$429

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 1/21

4:20 pm-11:18 pm

1 stop7h 58m

Lambert-St Louis

Mon 1/25

9:00 am-3:20 pm

1 stop5h 20m

$430

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 1/21

4:47 pm-10:06 pm

1 stop6h 19m

Lambert-St Louis

Mon 1/25

7:04 pm-11:25 am

2 stops15h 21m

$431
Quickest round-trip

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 10/21

12:17 pm-3:34 pm

Nonstop3h 17m

Lambert-St Louis

Wed 10/28

6:10 am-9:19 am

Nonstop3h 09m

$480
Cheapest one-way

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 11/12

12:35 am-7:15 pm

2 stops19h 40m

$211

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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 day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $243. 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 Sunday because tickets tend to average around $613. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Cancún in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $375 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $398 per ticket.

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

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

What cabin class options are available on Cancún to St. Louis flights?

There is only 1 cabin class available to choose from on Cancún to St. Louis 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 Cancún to St. Louis flights?

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

How have Cancún to St. Louis flight prices changed over time?

As of August 2026, prices for Cancún to St. Louis flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from Cancún to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Cancún to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Cancún to St. Louis (CUN to STL) flight deals and tips

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

Best Price Found

$294

Fastest flight time

3h 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Cancún in the past 72 hours is $294. The best round-trip flight deal from Cancún to St. Louis found on momondo in the last 72 hours is $588.
The fastest flight from Cancún to St. Louis takes 3h 05m
Direct flights go from Cancún to St. Louis every day.
There is 1 airport in St. Louis. From Cancún there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Cancún to St. Louis

  • How far is Cancun to Lambert-St Louis by plane?

    There are 1222.8 mi between Cancun and Lambert-St Louis. In terms of flight time, this usually takes a little over 3h 05m.

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

    Prices for flights from Cancun Airport to Lambert-St Louis Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Cancun Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

  • What is the most popular airline from Cancún to St. Louis?

Best airlines flying from Cancún to St. Louis

Compare and see reviews for airlines that fly from Cancún to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $298Free CancellationRating
5.6
2,683 reviews
Search Frontier flights

  • Frontier Flights From Cancún to St. Louis

    Frontier operates around 4 flights from Cancún to St. Louis every week. The average price of these flights found in the last 72 hours has been $588, but momondo users have found Frontier deals from Cancún to St. Louis from as low as $298 round-trip. Frontier has been scored 5.6/10 in 2,683 reviews.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
St. Peters
Maryland Heights
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cancún to St. Louis for you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Cancún with this policy.

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

momondo helps you find the best flight between Cancún and St. Louis 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 Cancún to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Cancún to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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