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Cheap flights from Cancún to St. Louis from $136

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 2/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Cancún to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:29 pm - 3:57 pm
CUN
-
STL
3h 28mnonstop
Frontier Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m1 stop
$296Frontier
Wed, Feb 4 - Wed, Feb 11
Multiple Airlines Logo
10:13 am - 11:33 pm
CUN
-
STL
14h 20m1 stop
Multiple Airlines Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m1 stop
$305Multiple Airlines
Wed, Feb 4 - Wed, Feb 11
Frontier Logo
4:20 pm - 6:51 am
CUN
-
STL
15h 31m1 stop
Frontier Logo
8:22 pm - 3:20 pm
STL
-
CUN
17h 58m1 stop
$311Frontier
Sun, Jan 18 - Sat, Jan 24
United Airlines Logo
4:51 pm - 10:14 pm
CUN
-
STL
6h 23m1 stop
United Airlines Logo
6:00 am - 3:59 pm
STL
-
CUN
8h 59m1 stop
$318United Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
1:21 pm - 11:33 pm
CUN
-
STL
35h 12m2 stops
Multiple Airlines Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m1 stop
$327Multiple Airlines
Wed, Feb 4 - Wed, Feb 11
Multiple Airlines Logo
2:04 pm - 6:51 am
CUN
-
STL
17h 47m2 stops
Multiple Airlines Logo
8:22 pm - 3:20 pm
STL
-
CUN
17h 58m1 stop
$344Multiple Airlines
Sun, Jan 18 - Sat, Jan 24
Multiple Airlines Logo
10:13 am - 11:33 pm
CUN
-
STL
14h 20m1 stop
Multiple Airlines Logo
10:11 pm - 12:08 pm
STL
-
CUN
36h 57m2 stops
$358Multiple Airlines
Thu, Feb 5 - Thu, Feb 12
United Airlines Logo
2:44 pm - 10:14 pm
CUN
-
STL
8h 30m1 stop
United Airlines Logo
8:30 am - 4:40 pm
STL
-
CUN
7h 10m1 stop
$379United Airlines
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
11:37 am - 6:51 am
CUN
-
STL
20h 14m2 stops
Frontier Logo
11:00 am - 10:32 am
STL
-
CUN
22h 32m2 stops
$424Frontier
Sun, Jan 18 - Sat, Jan 24
Frontier Logo
4:20 pm - 6:51 am
CUN
-
STL
15h 31m1 stop
Frontier Logo
6:00 am - 10:30 am
STL
-
CUN
3h 30mnonstop
$430Frontier
Sun, Jan 18 - Sat, Jan 24

Frontier flights from Cancún to St. Louis

Our best Frontier deals on Cancún to St. Louis flight tickets
Frontier
Feb 4
CUN1:29 pmCancun
3h 28m
STL3:57 pmLambert-St Louis
Feb 11
STL8:17 pmLambert-St Louis
11h 34m
1 stop
CUN8:51 amCancun
$296
Find similar
Frontier
Jan 18
CUN4:20 pmCancun
15h 31m
1 stop
STL6:51 amLambert-St Louis
Jan 24
STL8:22 pmLambert-St Louis
17h 58m
1 stop
CUN3:20 pmCancun
$311
Find similar
Frontier
Jan 18
CUN11:37 amCancun
20h 14m
2 stops
STL6:51 amLambert-St Louis
Jan 24
STL11:00 amLambert-St Louis
22h 32m
2 stops
CUN10:32 amCancun
$424
Find similar

United Airlines flights from Cancún to St. Louis

Our best United Airlines deals on Cancún to St. Louis flight tickets
United Airlines
Feb 19
CUN8:39 amCancun
7h 59m
1 stop
STL3:38 pmLambert-St Louis
Feb 23
STL6:55 pmLambert-St Louis
15h 30m
2 stops
CUN11:25 amCancun
$318
Find similar
United Airlines
Feb 19
CUN2:44 pmCancun
8h 30m
1 stop
STL10:14 pmLambert-St Louis
Feb 23
STL8:30 amLambert-St Louis
7h 10m
1 stop
CUN4:40 pmCancun
$379
Find similar
United Airlines
Jan 18
CUN12:28 pmCancun
10h 32m
1 stop
STL10:00 pmLambert-St Louis
Jan 25
STL6:00 amLambert-St Louis
5h 54m
1 stop
CUN12:54 pmCancun
$488
Find similar

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 December 22, 2025.
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

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/4

1:29 pm-3:57 pm

Nonstop3h 28m

Lambert-St Louis

Wed 2/11

8:17 pm-8:51 am

1 stop11h 34m

$296

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/4

10:13 am-11:33 pm

1 stop14h 20m

Lambert-St Louis

Wed 2/11

8:17 pm-8:51 am

1 stop11h 34m

$305

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sun 1/18

4:20 pm-6:51 am

1 stop15h 31m

Lambert-St Louis

Sat 1/24

8:22 pm-3:20 pm

1 stop17h 58m

$311

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

4:51 pm-10:14 pm

1 stop6h 23m

Lambert-St Louis

Mon 2/23

6:00 am-3:59 pm

1 stop8h 59m

$318

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/4

1:21 pm-11:33 pm

2 stops35h 12m

Lambert-St Louis

Wed 2/11

8:17 pm-8:51 am

1 stop11h 34m

$327

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sun 1/18

2:04 pm-6:51 am

2 stops17h 47m

Lambert-St Louis

Sat 1/24

8:22 pm-3:20 pm

1 stop17h 58m

$344

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/5

10:13 am-11:33 pm

1 stop14h 20m

Lambert-St Louis

Thu 2/12

10:11 pm-12:08 pm

2 stops36h 57m

$358

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

2:44 pm-10:14 pm

1 stop8h 30m

Lambert-St Louis

Mon 2/23

8:30 am-4:40 pm

1 stop7h 10m

$379

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sun 1/18

11:37 am-6:51 am

2 stops20h 14m

Lambert-St Louis

Sat 1/24

11:00 am-10:32 am

2 stops22h 32m

$424

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sun 1/18

4:20 pm-6:51 am

1 stop15h 31m

Lambert-St Louis

Sat 1/24

6:00 am-10:30 am

Nonstop3h 30m

$430

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 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 Thursday when prices can be found for as low as $176. 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 Monday because tickets tend to average around $229. 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 morning is the least expensive time of day to depart. momondo users have found prices as low as $187 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $372 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 Cancun to Lambert-St Louis flights?

There are 2 cabin classes available to choose from on Cancun to Lambert-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?

You could potentially save up to 2% on your flight if you consider stops on a Cancún to St. Louis flight.

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

As of December 2025, prices for Cancún to St. Louis flights are approximately 102% more expensive 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

Fastest flight time

3h 10m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Cancún to St. Louis takes 3h 10m
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

  • 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 10m.

  • 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 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?

Traveling to a place near St. Louis?

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

An easier way to manage your St. Louis trip

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