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Cheap flights from St. Louis to Cancún from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Cancún departing on 12/14. 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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Find the cheapest flights from St. Louis to Cancún

Cheap round-trip flights

Frontier Logo
10:22 am - 1:35 pmSTL-CUN
3h 13mnonstop
Frontier Logo
3:45 pm - 6:00 pmCUN-STL
3h 15mnonstop
$244Frontier
Find Deal
Sun, Oct 26 - Sun, Nov 2
Frontier Logo
10:17 am - 2:30 pmSTL-CUN
3h 13mnonstop
Frontier Logo
3:45 pm - 6:00 pmCUN-STL
3h 15mnonstop
$248Frontier
Find Deal
Tue, Nov 4 - Fri, Nov 14
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
$265Frontier
Find Deal
Sun, Dec 14 - Wed, Dec 17
Frontier Logo
10:17 am - 2:30 pmSTL-CUN
3h 13mnonstop
Frontier Logo
3:45 pm - 6:00 pmCUN-STL
3h 15mnonstop
$267Frontier
Find Deal
Mon, Nov 3 - Fri, Nov 14
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
$276Frontier
Find Deal
Thu, Dec 11 - Thu, Dec 11
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
$277Frontier
Find Deal
Mon, Feb 2 - Wed, Feb 11
Frontier Logo
10:17 am - 2:30 pmSTL-CUN
3h 13mnonstop
Frontier Logo
3:45 pm - 6:00 pmCUN-STL
3h 15mnonstop
$278Frontier
Find Deal
Mon, Nov 3 - Fri, Nov 14
Frontier Logo
10:21 am - 1:34 pmSTL-CUN
3h 13mnonstop
Frontier Logo
2:49 pm - 6:10 pmCUN-STL
3h 21mnonstop
$281Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Logo
10:17 am - 2:30 pmSTL-CUN
3h 13mnonstop
Logo
11:47 am - 5:27 pmCUN-STL
6h 40m1 stop
$296
Find Deal
Tue, Nov 4 - Thu, Nov 13
Delta Logo
9:30 am - 9:20 pmSTL-CUN
10h 50m1 stop
Delta Logo
7:50 am - 9:58 pmCUN-STL
15h 08m2 stops
$316Delta
Find Deal
Wed, Dec 3 - Wed, Dec 10

Delta flights from St. Louis to Cancún

Our best Delta deals on St. Louis to Cancún flight tickets
Delta
Dec 3
STL9:30 amLambert-St Louis
10h 50m
1 stop
CUN9:20 pmCancun
Dec 10
CUN7:50 amCancun
15h 08m
2 stops
STL9:58 pmLambert-St Louis
$316
Find similar
Delta
Sep 29
STL6:01 amLambert-St Louis
5h 24m
1 stop
CUN11:25 amCancun
Sep 30
CUN12:35 pmCancun
9h 25m
1 stop
STL10:00 pmLambert-St Louis
$646
Find similar
Delta
Sep 26
STL6:00 amLambert-St Louis
11h 45m
2 stops
CUN5:45 pmCancun
Sep 30
CUN6:01 amCancun
13h 04m
2 stops
STL7:05 pmLambert-St Louis
$706
Find similar

Frontier flights from St. Louis to Cancún

Our best Frontier deals on St. Louis to Cancún flight tickets
Frontier
Oct 26
STL10:22 amLambert-St Louis
3h 13m
CUN1:35 pmCancun
Nov 2
CUN3:45 pmCancun
3h 15m
STL6:00 pmLambert-St Louis
$244
Find similar
Frontier
Nov 4
STL10:17 amLambert-St Louis
3h 13m
CUN2:30 pmCancun
Nov 14
CUN3:45 pmCancun
3h 15m
STL6:00 pmLambert-St Louis
$248
Find similar
Frontier
Dec 14
STL6:00 amLambert-St Louis
3h 23m
CUN10:23 amCancun
Dec 17
CUN1:01 pmCancun
3h 25m
STL3:26 pmLambert-St Louis
$265
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Cancún 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 15, 2025.
Use the filters below to find and compare flights from St. Louis to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 10/26

10:22 am-1:35 pm

Nonstop3h 13m

Cancun

Sun 11/2

3:45 pm-6:00 pm

Nonstop3h 15m

$244

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 11/4

10:17 am-2:30 pm

Nonstop3h 13m

Cancun

Fri 11/14

3:45 pm-6:00 pm

Nonstop3h 15m

$248

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 12/14

6:00 am-10:23 am

Nonstop3h 23m

Cancun

Wed 12/17

1:01 pm-3:26 pm

Nonstop3h 25m

$265

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 11/3

10:17 am-2:30 pm

Nonstop3h 13m

Cancun

Fri 11/14

3:45 pm-6:00 pm

Nonstop3h 15m

$267

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Thu 12/11

6:00 am-10:23 am

Nonstop3h 23m

Cancun

Thu 12/11

1:01 pm-3:26 pm

Nonstop3h 25m

$276

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 2/2

6:00 am-10:23 am

Nonstop3h 23m

Cancun

Wed 2/11

1:01 pm-3:26 pm

Nonstop3h 25m

$277

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 11/3

10:17 am-2:30 pm

Nonstop3h 13m

Cancun

Fri 11/14

3:45 pm-6:00 pm

Nonstop3h 15m

$278

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Fri 10/3

10:21 am-1:34 pm

Nonstop3h 13m

Cancun

Mon 10/6

2:49 pm-6:10 pm

Nonstop3h 21m

$281

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 11/4

10:17 am-2:30 pm

Nonstop3h 13m

Cancun

Thu 11/13

11:47 am-5:27 pm

1 stop6h 40m

$296

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 12/3

9:30 am-9:20 pm

1 stop10h 50m

Cancun

Wed 12/10

7:50 am-9:58 pm

2 stops15h 08m

$316

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 Cancún from

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

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 St. Louis and Cancún?

What is the cheapest month to fly to Cancún?

If you don’t want to visit Cancún in September, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $434.

What is the cheapest day to depart on your flight to Cancún?

The cheapest day to depart from St. Louis to Cancún is on a Monday when prices can be found for as low as $461. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $550. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

What is the cheapest time of day to depart on your flight to Cancún?

Our most recent data shows that the best time of day to fly to Cancún is in the evening. Flights from St. Louis to Cancún during this time can be as low as $367. Flights to Cancún are more costly at noon, with an average ticket price of $831. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Cancún?

You are more likely to see cheaper flights to Cancún from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $509 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from St. Louis for as low as $412 on momondo.

What cabin class options are available on Lambert-St Louis to Cancun flights?

There are 2 cabin classes available to choose from on Lambert-St Louis to Cancun 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 St. Louis to Cancún flights?

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

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

As of September 2025, prices for St. Louis to Cancún flights are approximately 7% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Cancún

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

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

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

Best Price Found

$182

Fastest flight time

3h 07m

Direct flights

Every day

Airports in Cancún

1 airport
The best one-way flight to Cancún from St. Louis in the past 72 hours is $182. The best round-trip flight deal from St. Louis to Cancún found on momondo in the last 72 hours is $282.
The fastest flight from St. Louis to Cancún takes 3h 07m
Direct flights go from St. Louis to Cancún every day.
There is 1 airport near Cancún: Cancun (CUN)
Search flight deals

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

    Cancun is 1222.8 mi away from Lambert-St Louis. Typically, this will take 3h 13m by plane in normal conditions.

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

    Prices for flights from Lambert-St Louis Airport to Cancun Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Cancun Airport.

  • What documentation or ID do you need to fly to Cancun Airport?

    The travel and health documents required for your trip to Cancun Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cancun Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from St. Louis to Cancún

Compare and see reviews for airlines that fly from St. Louis to Cancún with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $130Free CancellationRating
6.3
8,015 reviews
Search Spirit Airlines flights
VolarisPriceFrom $174Free CancellationRating
6.6
1,154 reviews
Search Volaris flights
AeromexicoPriceFrom $252Free CancellationRating
7.4
1,697 reviews
Search Aeromexico flights
FrontierPriceFrom $258Free CancellationRating
5.8
3,172 reviews
Search Frontier flights
DeltaPriceFrom $360Free CancellationRating
7.9
7,954 reviews
Search Delta flights
United AirlinesPriceFrom $408Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
American AirlinesPriceFrom $478Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $516Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Cancún

    Across 5 Southwest flights from St. Louis to Cancún this week, the average price was $672, with the best Southwest deals starting from $516 round-trip. 4,242 users have rated Southwest on momondo, with an average score of 8.0/10.

  • Frontier Flights From St. Louis to Cancún

    The best Frontier deal for St. Louis to Cancún flight tickets found on momondo in the last 72 hours was $258, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $467 round-trip. Frontier operates 5 flights out of St. Louis into Cancún in an average week, so prices vary by time and availability. 3,172 Frontier reviews by users on momondo have scored the airline at 5.8/10.

Traveling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Playa del Carmen
Isla Mujeres
Holbox
Puerto Morelos
Akumal
Puerto Aventuras
Valladolid
Punta Sam

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Cancún from St. Louis.

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

All flight searches from St. Louis to Cancún on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cancún from St. Louis.

I’m not ready to book a flight from St. Louis to Cancún right now. Can momondo alert me if prices change?

Price alerts on flights to Cancún from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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