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Cheap flights from Cancún to St. Louis from $137

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 4/28. 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.
United Airlines Logo
3:18 pm - 9:40 pm
CUN
-
STL
7h 22m
1 stop
United Airlines Logo
6:00 am - 5:50 pm
STL
-
CUN
10h 50m
1 stop
$268United Airlines
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
4:55 pm - 9:21 am
CUN
-
STL
16h 26m
1 stop
United Airlines Logo
10:10 am - 7:19 pm
STL
-
CUN
9h 09m
1 stop
$270United Airlines
Tue, Mar 24 - Tue, Mar 31
Delta Logo
4:45 pm - 11:36 pm
CUN
-
STL
7h 51m
1 stop
Delta Logo
7:10 am - 9:11 pm
STL
-
CUN
13h 01m
1 stop
$300Delta
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
8:39 am - 8:26 pm
CUN
-
STL
12h 47m
2 stops
United Airlines Logo
6:25 am - 5:50 pm
STL
-
CUN
10h 25m
2 stops
$309United Airlines
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
5:30 am - 8:41 pm
CUN
-
STL
15h 11m
2 stops
United Airlines Logo
6:00 am - 12:33 pm
STL
-
CUN
6h 33m
1 stop
$312United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
5:30 am - 8:41 pm
CUN
-
STL
15h 11m
2 stops
United Airlines Logo
7:00 pm - 12:34 pm
STL
-
CUN
17h 34m
2 stops
$315United Airlines
Mon, Mar 16 - Mon, Mar 23
Frontier Logo
12:15 pm - 11:19 pm
CUN
-
STL
11h 04m
1 stop
Frontier Logo
8:12 pm - 11:16 am
STL
-
CUN
15h 04m
1 stop
$348Frontier
Mon, Mar 16 - Mon, Mar 23
Air Canada Logo
11:45 am - 3:29 pm
CUN
-
STL
28h 44m
1 stop
Air Canada Logo
4:05 pm - 8:15 pm
STL
-
CUN
28h 10m
1 stop
$351Air Canada
Thu, Mar 5 - Sun, Mar 8
United Airlines Logo
5:30 am - 8:41 pm
CUN
-
STL
15h 11m
2 stops
United Airlines Logo
6:30 am - 7:19 pm
STL
-
CUN
12h 49m
2 stops
$353United Airlines
Tue, Mar 24 - Tue, Mar 31
Frontier Logo
11:42 am - 2:09 pm
CUN
-
STL
3h 27mnonstop
Frontier Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m
1 stop
$356Frontier
Wed, Feb 25 - Wed, Mar 4

Frontier flights from Cancún to St. Louis

Our best Frontier deals on Cancún to St. Louis flight tickets
Frontier
Mar 16
CUN12:15 pmCancun
11h 04m
1 stop
STL11:19 pmLambert-St Louis
Mar 23
STL8:12 pmLambert-St Louis
15h 04m
1 stop
CUN11:16 amCancun
$348
Frontier
Feb 25
CUN11:42 amCancun
3h 27m
STL2:09 pmLambert-St Louis
Mar 4
STL8:17 pmLambert-St Louis
11h 34m
1 stop
CUN8:51 amCancun
$356
Frontier
Mar 16
CUN11:44 amCancun
3h 27m
STL3:11 pmLambert-St Louis
Mar 23
STL8:12 pmLambert-St Louis
15h 04m
1 stop
CUN11:16 amCancun
$357

United Airlines flights from Cancún to St. Louis

Our best United Airlines deals on Cancún to St. Louis flight tickets
United Airlines
Feb 19
CUN4:45 pmCancun
7h 14m
1 stop
STL10:59 pmLambert-St Louis
Feb 22
STL6:00 amLambert-St Louis
10h 50m
1 stop
CUN5:50 pmCancun
$268
United Airlines
Mar 24
CUN4:55 pmCancun
16h 26m
1 stop
STL9:21 amLambert-St Louis
Mar 31
STL10:10 amLambert-St Louis
9h 09m
1 stop
CUN7:19 pmCancun
$270
United Airlines
Feb 19
CUN8:39 amCancun
12h 47m
2 stops
STL8:26 pmLambert-St Louis
Feb 22
STL6:25 amLambert-St Louis
10h 25m
2 stops
CUN5:50 pmCancun
$309

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 February 9, 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

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

3:18 pm-9:40 pm

1 stop7h 22m

Lambert-St Louis

Mon 2/23

6:00 am-5:50 pm

1 stop10h 50m

$268

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 3/24

4:55 pm-9:21 am

1 stop16h 26m

Lambert-St Louis

Tue 3/31

10:10 am-7:19 pm

1 stop9h 09m

$270

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

4:45 pm-11:36 pm

1 stop7h 51m

Lambert-St Louis

Wed 3/4

7:10 am-9:11 pm

1 stop13h 01m

$300

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

8:39 am-8:26 pm

2 stops12h 47m

Lambert-St Louis

Sun 2/22

6:25 am-5:50 pm

2 stops10h 25m

$309

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 3/24

5:30 am-8:41 pm

2 stops15h 11m

Lambert-St Louis

Tue 3/31

6:00 am-12:33 pm

1 stop6h 33m

$312

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 3/16

5:30 am-8:41 pm

2 stops15h 11m

Lambert-St Louis

Mon 3/23

7:00 pm-12:34 pm

2 stops17h 34m

$315

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 3/16

12:15 pm-11:19 pm

1 stop11h 04m

Lambert-St Louis

Mon 3/23

8:12 pm-11:16 am

1 stop15h 04m

$348

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 3/5

11:45 am-3:29 pm

1 stop28h 44m

Lambert-St Louis

Sun 3/8

4:05 pm-8:15 pm

1 stop28h 10m

$351

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 3/24

5:30 am-8:41 pm

2 stops15h 11m

Lambert-St Louis

Tue 3/31

6:30 am-7:19 pm

2 stops12h 49m

$353

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

11:42 am-2:09 pm

Nonstop3h 27m

Lambert-St Louis

Wed 3/4

8:17 pm-8:51 am

1 stop11h 34m

$356

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 Sunday 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 $189 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?

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 February 2026, prices for Cancún to St. Louis flights are approximately 18% 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

Fastest flight time

3h 27m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Cancún to St. Louis takes 3h 27m
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 27m.

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