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Cheap flights from Cancún to St. Louis from $161

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 1/8. 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
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.
Delta Logo
5:30 pm - 11:38 pmCUN-STL
7h 08m1 stop
Delta Logo
7:10 am - 9:10 pmSTL-CUN
13h 00m1 stop
$280Delta
Find Deal
Thu, Feb 19 - Sun, Feb 22
Delta Logo
11:10 am - 5:43 pmCUN-STL
7h 33m1 stop
Delta Logo
7:10 am - 9:10 pmSTL-CUN
13h 00m1 stop
$281Delta
Find Deal
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
$423Frontier
Find Deal
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
$424Frontier
Find Deal
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
8:39 am - 3:38 pmCUN-STL
7h 59m1 stop
United Airlines Logo
8:21 am - 5:50 pmSTL-CUN
8h 29m2 stops
$454United Airlines
Find Deal
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
4:51 pm - 10:14 pmCUN-STL
6h 23m1 stop
United Airlines Logo
8:21 am - 5:50 pmSTL-CUN
8h 29m2 stops
$456United Airlines
Find Deal
Thu, Feb 19 - Sun, Feb 22

Delta flights from Cancún to St. Louis

Our best Delta deals on Cancún to St. Louis flight tickets
Delta
Feb 19
CUN5:30 pmCancun
7h 08m
1 stop
STL11:38 pmLambert-St Louis
Feb 22
STL7:10 amLambert-St Louis
13h 00m
1 stop
CUN9:10 pmCancun
$280
Find similar
Delta
Feb 19
CUN11:10 amCancun
7h 33m
1 stop
STL5:43 pmLambert-St Louis
Feb 22
STL7:10 amLambert-St Louis
13h 00m
1 stop
CUN9:10 pmCancun
$281
Find similar

Frontier flights from Cancún to St. Louis

Our best Frontier deals on Cancún to St. Louis flight tickets
Frontier
Feb 19
CUN1:01 pmCancun
3h 25m
STL3:26 pmLambert-St Louis
Feb 22
STL6:00 amLambert-St Louis
3h 23m
CUN10:23 amCancun
$423
Find similar
Frontier
Feb 19
CUN1:01 pmCancun
3h 25m
STL3:26 pmLambert-St Louis
Feb 22
STL6:00 amLambert-St Louis
3h 23m
CUN10:23 amCancun
$424
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 November 4, 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

Thu 2/19

5:30 pm-11:38 pm

1 stop7h 08m

Lambert-St Louis

Sun 2/22

7:10 am-9:10 pm

1 stop13h 00m

$280

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:10 am-5:43 pm

1 stop7h 33m

Lambert-St Louis

Sun 2/22

7:10 am-9:10 pm

1 stop13h 00m

$281

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Sun 2/22

6:00 am-10:23 am

Nonstop3h 23m

$423

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Sun 2/22

6:00 am-10:23 am

Nonstop3h 23m

$424

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

8:39 am-3:38 pm

1 stop7h 59m

Lambert-St Louis

Sun 2/22

8:21 am-5:50 pm

2 stops8h 29m

$454

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

4:51 pm-10:14 pm

1 stop6h 23m

Lambert-St Louis

Sun 2/22

8:21 am-5:50 pm

2 stops8h 29m

$456

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 1/8

10:15 am-10:33 pm

1 stop13h 18m

$161

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 12/3

2:44 pm-1:52 pm

1 stop24h 08m

$170

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 12/10

11:28 am-1:50 pm

Nonstop3h 22m

$176

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 2/3

1:43 pm-11:25 pm

2 stops10h 42m

$177

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 typical price of a round-trip flight between Cancún and St. Louis?

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 Saturday because tickets tend to average around $237. 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.

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

As of November 2025, prices for Cancún to St. Louis flights are approximately 19% 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

$192

Fastest flight time

3h 10m

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 $192. The best round-trip flight deal from Cancún to St. Louis found on momondo in the last 72 hours is $187.
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 near St. Louis: Lambert-St Louis (STL)
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  • 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 25m.

  • 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
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
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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