Find Cheap Flights from Lambert-St Louis to Cancun (STL - CUN)

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Thu 2/22
Thu 3/1
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Good to Know

Low Season:
January
Best time to beat the crowds
2%
expected price decrease
High Season:
July
Most popular time to fly
6%
expected price increase
Average Price:
$1170
(avg. price over the last 2 weeks)
Good Deal:
$786
or less (round trip)

When to Book Flights from Lambert-St Louis to Cancun

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $785 or less.
The cheapest flight from Lambert-St Louis to Cancun was found 1 day before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is January.
Morning departure is around 7% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Lambert-St Louis to Cancun Flights

How long does a flight from Lambert-St Louis to Cancun take?
An average nonstop flight takes 3h 07m, covering a distance of 1241 miles.
How many flights are there between Lambert-St Louis and Cancun?
There are 25 (nonstop) flights between Lambert-St Louis and Cancun per week, averaging 3 per day.
Which airlines provide the cheapest flights from Lambert-St Louis to Cancun?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($297), Aeromexico ($337) and Frontier ($342).
Do I need a passport to fly between Lambert-St Louis and Cancun?
Yes.
Which airlines fly most frequently between Lambert-St Louis and Cancun?
Frontier (2 times daily), Southwest (1 times daily) are the most frequent flyers on this route.

Book cheap flights from Lambert-St Louis to Cancun (round-trip)

Airports
Origin
St. Louis
$297
only
$297
Destination
Cancun
$297
only
$297
Tue, Mar 6
STL
CUN
9h 40m
Mon, Mar 12
CUN
STL
11h 37m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 4
STL
CUN
31h 22m
Sun, Mar 11
CUN
STL
25h 17m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 5557 reviews
Overall
7.4
Boarding
7.3
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
GRU
Excellent 8.3

over booked flight

MEX
CUN
Mediocre 2.0

Nothing!!!!

A horrible flight!!! We arrived at 5:04pm then we sat on the tamarac for 40 minutes before they could find a gate for us!!!! What a horrible lack of management!’ Who runs this airport/airline!? At the end they moved us to completly different terminal!!! Had to find a new transportation to the hotel!!! Again, what a horrible display of management skills!!

MEX
BOS
Excellent 10.0

we flew clase premier and really enjoyed it. there was cheese and wine to start, then a chicken breast with potatoes along with a courgette salad and then asparagus on the side. the movie selection was good, the seats were comfortable... we were very happy with it.

nothing

SMF
GDL
Excellent 10.0

Everything was as expected.

HUX
MEX
Excellent 10.0

huatulco airport is small and easy to navigate. only needed to arrive 50 mins before departure even with luggage. the flight was comfortable and less than an hour with a complimentary drink (soft drinks, coffee/tea, alcohol).

nothing

Sun, Apr 8
STL
CUN
3h 16m
Fri, Apr 20
CUN
STL
3h 21m
Trip: 13 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 5 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
CUN
Excellent 10.0

Everything

Nothing.

STL
CUN
Okay 5.2

Frontier has a ton of hidden fees...including no free drinks/snacks on the flight, fee for carry-ons. Seats do not recline so you're stuck in 1 position the whole flight. Tray tables were the same size as an iphone.

PHX
MKE
Okay 4.0

Nothing

Everything

STL
CUN
Okay 5.6

it was a direct flight. It was the only carrier with a direct flight. The plane arrived with no difficulty.

The Frontier website was misleading. On check in it asked to pick a seat assignment, which were charged additional money for. I tried to undo the seat assignment (after I went and read their policy that it was optional.) So the website is fixed, that it can not be changed. So I called Frontier and after a 45 minute hold time was told options (seat assignment) can not be changed and I had to pay for it. This added $24 each way for a total of $48 additional charge. Also only a small carry on allowed. so that added an additional charge of $30. The seats don't recline even a little bit. as it was an Airbus and not a Boeing plane. not as comfortable as Boeing. Less padding in seat also.

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Wed, Mar 7
STL
CUN
9h 10m
Tue, Mar 13
CUN
STL
8h 59m
Trip: 6 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54735 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
EWR
DEN
Good 6.3

No entertainment was available. Not working for whole plane

SAN
SFO
Okay 5.3

The crew was very nice

It was a short flight. Didn’t dislike anything other than paying for TV/movies.

SFO
PHL
Mediocre 2.3

Crew was nice

I hated my seat. Last row. Seat didn’t recline. Right next to the bathroom. That should not even be a row for passengers!

ORD
CVG
Good 6.0

My checked luggage didn’t make it to cincinnati

SFO
IAD
Mediocre 3.3

Can’t think of anything nice to say...

On a cross-country flight from San Francisco to DC, you would think United could provide more than one snack option that is void of any nutritional value, and perhaps they could provide alternatives for their patrons with allergies. Is fresh fruit really too much to ask for on a 6-7 hour flight??

Wed, Mar 7
STL
CUN
7h 15m
Wed, Mar 21
CUN
STL
6h 44m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 13
STL
CUN
7h 55m
Mon, Mar 26
CUN
STL
6h 44m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 10
STL
CUN
3h 16m
Fri, Apr 20
CUN
STL
3h 21m
Trip: 11 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 5 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
BNA
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

DEN
ORD
Excellent 10.0

We got there ahead of schedule

PHX
MKE
Okay 4.0

Nothing

Everything

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Tue, Mar 20
STL
CUN
6h 20m
Mon, Mar 26
CUN
STL
9h 50m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54735 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
BIL
Mediocre 2.3

Nothing

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

SAN
SFO
Okay 5.3

The crew was very nice

It was a short flight. Didn’t dislike anything other than paying for TV/movies.

EWR
DEN
Good 6.3

No entertainment was available. Not working for whole plane

GUM
MNL
Good 6.6

Staff was great

getting off the plane was very time consuming despite being already landed. Not entirely sure why but this was the first time getting off a plane took some time. im sure the staff was working hard but I’m unsure why it took some time.

COS
DEN
Mediocre 2.3

Nothing.

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

Thu, Mar 15
STL
CUN
7h 20m
Wed, Mar 28
CUN
STL
5h 55m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 11
STL
CUN
3h 16m
Fri, Apr 20
CUN
STL
3h 21m
Trip: 10 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 5 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHX
MKE
Okay 4.0

Nothing

Everything

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

STL
CUN
Okay 5.6

it was a direct flight. It was the only carrier with a direct flight. The plane arrived with no difficulty.

The Frontier website was misleading. On check in it asked to pick a seat assignment, which were charged additional money for. I tried to undo the seat assignment (after I went and read their policy that it was optional.) So the website is fixed, that it can not be changed. So I called Frontier and after a 45 minute hold time was told options (seat assignment) can not be changed and I had to pay for it. This added $24 each way for a total of $48 additional charge. Also only a small carry on allowed. so that added an additional charge of $30. The seats don't recline even a little bit. as it was an Airbus and not a Boeing plane. not as comfortable as Boeing. Less padding in seat also.

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
ORD
Excellent 10.0

We got there ahead of schedule

Wed, Mar 21
STL
CUN
5h 28m
Tue, Mar 27
CUN
STL
8h 03m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54735 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
CTU
SFO
Mediocre 3.6

The breakfast on the international flight was pretty good. However, there were more frequent snacks and healthier options when I flew internationally on Delta.

I didn’t like that my pre-flight request for gluten-free snacks/meals was ignored. I didn’t like the attitude of one flight attendant who couldn’t bring herself to empathize with my allergy to gluten— which causes painful cracks in my palms and fingers.

EWR
DEN
Good 6.3

No entertainment was available. Not working for whole plane

COS
DEN
Mediocre 2.3

Nothing.

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

GUM
MNL
Good 6.6

Staff was great

getting off the plane was very time consuming despite being already landed. Not entirely sure why but this was the first time getting off a plane took some time. im sure the staff was working hard but I’m unsure why it took some time.

ORD
CLE
Excellent 9.3

Wasted a lot of time for boarding. Not smooth at all

Sun, Mar 18
STL
CUN
16h 35m
Sun, Mar 25
CUN
STL
16h 25m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 1
STL
CUN
3h 11m
Fri, May 4
CUN
STL
3h 13m
Trip: 4 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 5 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
CUN
Okay 5.6

it was a direct flight. It was the only carrier with a direct flight. The plane arrived with no difficulty.

The Frontier website was misleading. On check in it asked to pick a seat assignment, which were charged additional money for. I tried to undo the seat assignment (after I went and read their policy that it was optional.) So the website is fixed, that it can not be changed. So I called Frontier and after a 45 minute hold time was told options (seat assignment) can not be changed and I had to pay for it. This added $24 each way for a total of $48 additional charge. Also only a small carry on allowed. so that added an additional charge of $30. The seats don't recline even a little bit. as it was an Airbus and not a Boeing plane. not as comfortable as Boeing. Less padding in seat also.

STL
CUN
Excellent 10.0

Everything

Nothing.

STL
CUN
Okay 5.2

Frontier has a ton of hidden fees...including no free drinks/snacks on the flight, fee for carry-ons. Seats do not recline so you're stuck in 1 position the whole flight. Tray tables were the same size as an iphone.

LAS
BNA
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Thu, Apr 5
STL
CUN
5h 40m
Fri, Apr 13
CUN
STL
6h 14m
Trip: 9 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54735 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
MEM
EWR
Excellent 10.0

On time & courteous. & On board service was excellent

Nothing

ORD
CVG
Good 6.0

My checked luggage didn’t make it to cincinnati

EWR
DEN
Good 6.3

No entertainment was available. Not working for whole plane

LAX
SFO
Mediocre 3.3

Nothing

ORD
CLE
Excellent 9.3

Wasted a lot of time for boarding. Not smooth at all

Mon, Mar 19
STL
CUN
14h 44m
Wed, Mar 28
CUN
STL
15h 52m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 22
STL
CUN
3h 11m
Fri, May 25
CUN
STL
3h 13m
Trip: 4 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 5 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
BNA
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
ORD
Excellent 10.0

We got there ahead of schedule

STL
CUN
Okay 5.6

it was a direct flight. It was the only carrier with a direct flight. The plane arrived with no difficulty.

The Frontier website was misleading. On check in it asked to pick a seat assignment, which were charged additional money for. I tried to undo the seat assignment (after I went and read their policy that it was optional.) So the website is fixed, that it can not be changed. So I called Frontier and after a 45 minute hold time was told options (seat assignment) can not be changed and I had to pay for it. This added $24 each way for a total of $48 additional charge. Also only a small carry on allowed. so that added an additional charge of $30. The seats don't recline even a little bit. as it was an Airbus and not a Boeing plane. not as comfortable as Boeing. Less padding in seat also.

STL
CUN
Okay 5.2

Frontier has a ton of hidden fees...including no free drinks/snacks on the flight, fee for carry-ons. Seats do not recline so you're stuck in 1 position the whole flight. Tray tables were the same size as an iphone.

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

Sun, Apr 8
STL
CUN
8h 55m
Tue, Apr 17
CUN
STL
8h 31m
Trip: 10 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54735 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
CTU
SFO
Mediocre 3.6

The breakfast on the international flight was pretty good. However, there were more frequent snacks and healthier options when I flew internationally on Delta.

I didn’t like that my pre-flight request for gluten-free snacks/meals was ignored. I didn’t like the attitude of one flight attendant who couldn’t bring herself to empathize with my allergy to gluten— which causes painful cracks in my palms and fingers.

COS
DEN
Mediocre 2.3

Nothing.

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

MEM
EWR
Excellent 10.0

On time & courteous. & On board service was excellent

Nothing

DEN
BIL
Mediocre 2.3

Nothing

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

SFO
IAD
Mediocre 3.3

Can’t think of anything nice to say...

On a cross-country flight from San Francisco to DC, you would think United could provide more than one snack option that is void of any nutritional value, and perhaps they could provide alternatives for their patrons with allergies. Is fresh fruit really too much to ask for on a 6-7 hour flight??

Wed, Mar 21
STL
CUN
5h 28m
Tue, Mar 27
CUN
STL
9h 08m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Jun 25
STL
CUN
3h 07m
Mon, Jul 2
CUN
STL
3h 16m
Trip: 8 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 5 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
BNA
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

STL
CUN
Good 6.6

This was the only direct flight I found to Cancun which is a big plus. The price appeared cheap and I had recently flown on Frontier on a package trip booked through Funjet Vacations so was aware that seats are small, not well padded, do not recline at all and have the world's smallest tray for your beverages.

When I checked in I discovered that we would have to pay $30-35 for checked or carry on bags each way! Only if you are booked through Apple or Fun Jet are you allowed one free checked bag so beware! This increased the cost by at least $60 per person if you can keep it down to just one bag per person. Also, there are not any complimentary drinks, you will be charged for everything. Lastly, my TS-pre check status doesn't matter since Frontier does not participate.

STL
CUN
Okay 5.2

Frontier has a ton of hidden fees...including no free drinks/snacks on the flight, fee for carry-ons. Seats do not recline so you're stuck in 1 position the whole flight. Tray tables were the same size as an iphone.

PHX
MKE
Okay 4.0

Nothing

Everything

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Mon, Apr 9
STL
CUN
7h 15m
Tue, Apr 17
CUN
STL
12h 54m
Trip: 9 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54735 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
BIL
Mediocre 2.3

Nothing

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

EWR
DEN
Good 6.3

No entertainment was available. Not working for whole plane

ORD
CVG
Good 6.0

My checked luggage didn’t make it to cincinnati

COS
DEN
Mediocre 2.3

Nothing.

Delayed flights leading to incredibly tight connection times, staff inconsistent with messaging re the source of the delay, zero compassion for customers, offering $700-$1,400 to get off the plane when you charge $200 to change a flight 2 weeks in advance is especially galling! Will not fly with United again whenever there is a viable alternative to my destination.

GUM
MNL
Good 6.6

Staff was great

getting off the plane was very time consuming despite being already landed. Not entirely sure why but this was the first time getting off a plane took some time. im sure the staff was working hard but I’m unsure why it took some time.

Show more results

Lambert-St Louis to Cancun Flight Information

Avg. Flight Duration 3h 15m
Flights Arrive in Cancun
Flights Depart from Lambert-St Louis
Flight Price $297
Distance 1241 miles
Airlines Aeromexico, Frontier, United
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.