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Cheap flights from Cancún to St. Louis from $111

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 12/11. 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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Cheap round-trip flights

Frontier Logo
2:49 pm - 6:10 pmCUN-STL
3h 21mnonstop
Frontier Logo
10:21 am - 1:34 pmSTL-CUN
3h 13mnonstop
$234Frontier
Find Deal
Wed, Oct 1 - Sat, Oct 4
Multiple Airlines Logo
2:49 pm - 6:10 pmCUN-STL
3h 21mnonstop
Multiple Airlines Logo
4:05 pm - 9:20 amSTL-CUN
17h 15m1 stop
$327Multiple Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
Air Canada Logo
10:10 pm - 3:29 pmCUN-STL
18h 19m1 stop
Air Canada Logo
4:05 pm - 9:15 pmSTL-CUN
28h 10m1 stop
$380Air Canada
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Wed, Nov 12 - Wed, Nov 19
United Airlines Logo
8:39 am - 3:50 pmCUN-STL
8h 11m1 stop
United Airlines Logo
8:00 am - 8:18 pmSTL-CUN
11h 18m2 stops
$420United Airlines
Find Deal
Wed, Nov 12 - Wed, Nov 19
Aeromexico Logo
11:14 am - 8:39 pmCUN-STL
10h 25m2 stops
Aeromexico Logo
6:00 am - 12:30 pmSTL-CUN
5h 30m1 stop
$421Aeromexico
Find Deal
Thu, Feb 19 - Sun, Feb 22
Aeromexico Logo
11:14 am - 8:39 pmCUN-STL
10h 25m2 stops
Aeromexico Logo
10:00 am - 4:31 pmSTL-CUN
5h 31m1 stop
$422Aeromexico
Find Deal
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
3:18 pm - 9:00 pmCUN-STL
6h 42m1 stop
United Airlines Logo
3:15 pm - 11:54 amSTL-CUN
20h 39m2 stops
$433United Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 9
Air Canada Logo
10:10 pm - 3:29 pmCUN-STL
18h 19m1 stop
Air Canada Logo
4:05 pm - 9:05 pmSTL-CUN
28h 00m1 stop
$456Air Canada
Find Deal
Mon, Mar 2 - Fri, Mar 6
Delta Logo
12:25 pm - 6:04 pmCUN-STL
6h 39m1 stop
Delta Logo
7:05 pm - 9:00 amSTL-CUN
13h 55m1 stop
$477Delta
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Thu, Feb 26 - Sun, Mar 8
Delta Logo
12:25 pm - 6:04 pmCUN-STL
6h 39m1 stop
Delta Logo
7:05 pm - 10:00 amSTL-CUN
13h 55m1 stop
$503Delta
Find Deal
Thu, Feb 26 - Thu, Mar 5

Aeromexico flights from Cancún to St. Louis

Our best Aeromexico deals on Cancún to St. Louis flight tickets
Aeromexico
Feb 19
CUN11:14 amCancun
10h 25m
2 stops
STL8:39 pmLambert-St Louis
Feb 22
STL6:00 amLambert-St Louis
5h 30m
1 stop
CUN12:30 pmCancun
$421
Find similar
Aeromexico
Feb 19
CUN11:14 amCancun
10h 25m
2 stops
STL8:39 pmLambert-St Louis
Feb 22
STL10:00 amLambert-St Louis
5h 31m
1 stop
CUN4:31 pmCancun
$422
Find similar
Aeromexico
Mar 2
CUN9:29 pmCancun
27h 11m
2 stops
STL11:40 pmLambert-St Louis
Mar 11
STL7:30 amLambert-St Louis
5h 20m
1 stop
CUN12:50 pmCancun
$528
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Frontier flights from Cancún to St. Louis

Our best Frontier deals on Cancún to St. Louis flight tickets
Frontier
Oct 1
CUN2:49 pmCancun
3h 21m
STL6:10 pmLambert-St Louis
Oct 4
STL10:21 amLambert-St Louis
3h 13m
CUN1:34 pmCancun
$234
Find similar
Frontier
Sep 18
CUN2:49 pmCancun
3h 21m
STL6:10 pmLambert-St Louis
Sep 21
STL10:21 amLambert-St Louis
3h 13m
CUN1:34 pmCancun
$312
Find similar
Frontier
Nov 1
CUN3:45 pmCancun
3h 15m
STL7:00 pmLambert-St Louis
Nov 8
STL10:17 amLambert-St Louis
3h 13m
CUN2:30 pmCancun
$362
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 September 17, 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 10/1

2:49 pm-6:10 pm

Nonstop3h 21m

Lambert-St Louis

Sat 10/4

10:21 am-1:34 pm

Nonstop3h 13m

$234

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 10/1

2:49 pm-6:10 pm

Nonstop3h 21m

Lambert-St Louis

Sat 10/4

4:05 pm-9:20 am

1 stop17h 15m

$327

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 11/12

10:10 pm-3:29 pm

1 stop18h 19m

Lambert-St Louis

Wed 11/19

4:05 pm-9:15 pm

1 stop28h 10m

$380

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 11/12

8:39 am-3:50 pm

1 stop8h 11m

Lambert-St Louis

Wed 11/19

8:00 am-8:18 pm

2 stops11h 18m

$420

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:14 am-8:39 pm

2 stops10h 25m

Lambert-St Louis

Sun 2/22

6:00 am-12:30 pm

1 stop5h 30m

$421

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:14 am-8:39 pm

2 stops10h 25m

Lambert-St Louis

Sun 2/22

10:00 am-4:31 pm

1 stop5h 31m

$422

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/26

3:18 pm-9:00 pm

1 stop6h 42m

Lambert-St Louis

Mon 3/9

3:15 pm-11:54 am

2 stops20h 39m

$433

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 3/2

10:10 pm-3:29 pm

1 stop18h 19m

Lambert-St Louis

Fri 3/6

4:05 pm-9:05 pm

1 stop28h 00m

$456

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/26

12:25 pm-6:04 pm

1 stop6h 39m

Lambert-St Louis

Sun 3/8

7:05 pm-9:00 am

1 stop13h 55m

$477

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/26

12:25 pm-6:04 pm

1 stop6h 39m

Lambert-St Louis

Thu 3/5

7:05 pm-10:00 am

1 stop13h 55m

$503

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 $366. 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 $194 when looking at flights departing in the morning. 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 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?

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 September 2025, prices for Cancún to St. Louis flights are approximately 31% 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

Best Price Found

$183

Fastest flight time

3h 09m

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 $183. The best round-trip flight deal from Cancún to St. Louis found on momondo in the last 72 hours is $372.
The fastest flight from Cancún to St. Louis takes 3h 09m
Direct flights go from Cancún to St. Louis every day.
There is 1 airport near St. Louis: 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 15m.

  • 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
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
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.

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