Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Cancún from $98

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 1/13. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Cancún

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m1 stop
Frontier Logo
11:42 am - 2:09 pm
CUN
-
STL
3h 27mnonstop
$242Frontier
Sat, Feb 21 - Tue, Feb 24
Frontier Logo
6:00 am - 10:30 am
STL
-
CUN
3h 30mnonstop
Frontier Logo
4:30 pm - 6:51 am
CUN
-
STL
15h 21m1 stop
$263Frontier
Tue, Jan 27 - Fri, Jan 30
Multiple Airlines Logo
6:00 am - 10:30 am
STL
-
CUN
3h 30mnonstop
Multiple Airlines Logo
10:13 am - 10:27 pm
CUN
-
STL
13h 14m1 stop
$273Multiple Airlines
Tue, Feb 17 - Tue, Feb 24
Frontier Logo
8:22 pm - 3:20 pm
STL
-
CUN
17h 58m1 stop
Frontier Logo
1:29 pm - 3:57 pm
CUN
-
STL
3h 28mnonstop
$277Frontier
Sat, Jan 24 - Wed, Jan 28
Multiple Airlines Logo
5:11 pm - 9:13 am
STL
-
CUN
15h 02m1 stop
Multiple Airlines Logo
4:30 pm - 6:51 am
CUN
-
STL
15h 21m1 stop
$288Multiple Airlines
Sun, Jan 18 - Fri, Jan 23
Frontier Logo
8:17 pm - 8:51 am
STL
-
CUN
11h 34m1 stop
Frontier Logo
11:42 am - 2:09 pm
CUN
-
STL
3h 27mnonstop
$290Frontier
Sat, Feb 21 - Tue, Feb 24
Multiple Airlines Logo
6:00 am - 10:30 am
STL
-
CUN
3h 30mnonstop
Multiple Airlines Logo
11:52 am - 11:33 pm
CUN
-
STL
12h 41m2 stops
$294Multiple Airlines
Tue, Jan 27 - Fri, Jan 30
Multiple Airlines Logo
8:17 pm - 1:37 pm
STL
-
CUN
16h 20m1 stop
Multiple Airlines Logo
10:13 am - 10:27 pm
CUN
-
STL
13h 14m1 stop
$295Multiple Airlines
Sat, Feb 21 - Tue, Feb 24
Frontier Logo
6:00 am - 10:30 am
STL
-
CUN
3h 30mnonstop
Frontier Logo
1:29 pm - 3:57 pm
CUN
-
STL
3h 28mnonstop
$296Frontier
Sun, Jan 18 - Fri, Jan 23
Multiple Airlines Logo
3:49 pm - 9:18 am
STL
-
CUN
16h 29m1 stop
Multiple Airlines Logo
10:13 am - 11:59 pm
CUN
-
STL
14h 46m1 stop
$297Multiple Airlines
Mon, Feb 23 - Thu, Feb 26

Frontier flights from St. Louis to Cancún

Our best Frontier deals on St. Louis to Cancún flight tickets
Frontier
Feb 21
STL8:17 pmLambert-St Louis
11h 34m
1 stop
CUN8:51 amCancun
Feb 24
CUN11:42 amCancun
3h 27m
STL2:09 pmLambert-St Louis
$242
Find similar
Frontier
Jan 27
STL6:00 amLambert-St Louis
3h 30m
CUN10:30 amCancun
Jan 30
CUN4:30 pmCancun
15h 21m
1 stop
STL6:51 amLambert-St Louis
$263
Find similar
Frontier
Jan 24
STL8:22 pmLambert-St Louis
17h 58m
1 stop
CUN3:20 pmCancun
Jan 28
CUN1:29 pmCancun
3h 28m
STL3:57 pmLambert-St Louis
$277
Find similar

Delta flights from St. Louis to Cancún

Our best Delta deals on St. Louis to Cancún flight tickets
Delta
Dec 22
STL6:05 amLambert-St Louis
7h 05m
1 stop
CUN2:10 pmCancun
Dec 26
CUN12:05 pmCancun
12h 37m
2 stops
STL11:42 pmLambert-St Louis
$549
Find similar
Delta
Dec 25
STL6:05 amLambert-St Louis
8h 15m
1 stop
CUN3:20 pmCancun
Dec 27
CUN8:00 amCancun
9h 28m
1 stop
STL4:28 pmLambert-St Louis
$565
Find similar
Delta
Dec 24
STL6:05 amLambert-St Louis
7h 05m
1 stop
CUN2:10 pmCancun
Dec 31
CUN8:00 amCancun
12h 04m
1 stop
STL7:04 pmLambert-St Louis
$570
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 December 18, 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

Sat 2/21

8:17 pm-8:51 am

1 stop11h 34m

Cancun

Tue 2/24

11:42 am-2:09 pm

Nonstop3h 27m

$242

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 1/27

6:00 am-10:30 am

Nonstop3h 30m

Cancun

Fri 1/30

4:30 pm-6:51 am

1 stop15h 21m

$263

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 2/17

6:00 am-10:30 am

Nonstop3h 30m

Cancun

Tue 2/24

10:13 am-10:27 pm

1 stop13h 14m

$273

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 1/24

8:22 pm-3:20 pm

1 stop17h 58m

Cancun

Wed 1/28

1:29 pm-3:57 pm

Nonstop3h 28m

$277

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 1/18

5:11 pm-9:13 am

1 stop15h 02m

Cancun

Fri 1/23

4:30 pm-6:51 am

1 stop15h 21m

$288

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 2/21

8:17 pm-8:51 am

1 stop11h 34m

Cancun

Tue 2/24

11:42 am-2:09 pm

Nonstop3h 27m

$290

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 1/27

6:00 am-10:30 am

Nonstop3h 30m

Cancun

Fri 1/30

11:52 am-11:33 pm

2 stops12h 41m

$294

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 2/21

8:17 pm-1:37 pm

1 stop16h 20m

Cancun

Tue 2/24

10:13 am-10:27 pm

1 stop13h 14m

$295

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 1/18

6:00 am-10:30 am

Nonstop3h 30m

Cancun

Fri 1/23

1:29 pm-3:57 pm

Nonstop3h 28m

$296

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 2/23

3:49 pm-9:18 am

1 stop16h 29m

Cancun

Thu 2/26

10:13 am-11:59 pm

1 stop14h 46m

$297

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 cheapest month to fly to Cancún?

If you don’t want to visit Cancún in September, then you should wait until October to fly from St. Louis, when ticket prices are also cheap, with an average price of $400.

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 $391. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $514. 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 $627. 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 $470 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 $374 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 December 2025, prices for St. Louis to Cancún flights are approximately 32% cheaper 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

$213

Fastest flight time

3h 00m

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 $213. The best round-trip flight deal from St. Louis to Cancún found on momondo in the last 72 hours is $346.
The fastest flight from St. Louis to Cancún takes 3h 00m
Direct flights go from St. Louis to Cancún every day.
There is 1 airport in Cancún. From St. Louis there are direct flights to 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 00m 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
8,190 reviews
Search Spirit Airlines flights
VolarisPriceFrom $175Free CancellationRating
6.6
1,155 reviews
Search Volaris flights
AeromexicoPriceFrom $218Free CancellationRating
7.4
1,629 reviews
Search Aeromexico flights
FrontierPriceFrom $232Free CancellationRating
5.8
3,080 reviews
Search Frontier flights
DeltaPriceFrom $315Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $386Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
American AirlinesPriceFrom $435Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
SouthwestPriceFrom $521Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Cancún

    Across 3 Southwest flights from St. Louis to Cancún this week, the average price was $662, with the best Southwest deals starting from $521 round-trip. 4,250 users have rated Southwest on momondo, with an average score of 7.9/10.

  • 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 $232, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $425 round-trip. Frontier operates 7 flights out of St. Louis into Cancún in an average week, so prices vary by time and availability. 3,080 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.

An easier way to manage your Cancún trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Mexico