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

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Sat 12/9
Sat 12/16
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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:
$1241
(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.
On average*, there is no price difference when choosing to fly in the morning or the evening on this flight route.
*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 14m, covering a distance of 1241 miles.
How many flights are there between Lambert-St Louis and Cancun?
There are 15 (nonstop) flights between Lambert-St Louis and Cancun per week, averaging 2 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 ($250), Frontier ($258) and Aeromexico ($261).
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 (0 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
$250
only
$250
Destination
Cancun
$250
only
$250
Mon, Dec 18
STL
CUN
3h 16m
Tue, Dec 19
CUN
STL
6h 55m
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Dec 11
STL
CUN
3h 16m
Thu, Dec 14
CUN
STL
3h 15m
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
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.

PHL
PBI
Excellent 10.0

Nice new clean plane

LAX
DEN
Mediocre 3.0

I liked the cheap fare, but it was misleading because once you pay for your seat, bags and water, its just as much as a regular price.

Nickel and dimed for everything. Minimum $5-$25 for a seat, $45 for checked bag, $40 for carry on, $3 coffee, no beverage service. And the plame was filthy to boot. So gross, never again.

DEN
AUS
Mediocre 2.6

Not much

Same as previous flight

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.

Mon, Jan 22
STL
CUN
14h 00m
Mon, Jan 29
CUN
STL
8h 17m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

MEX
IAD
Good 6.0

Same

Same

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

Sat, Dec 30
STL
CUN
14h 40m
Sat, Jan 13
CUN
STL
8h 41m
Trip: 15 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 52122 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAH
Okay 4.0

We got to our destination.

I am not a large person and yet I felt squeezed. There isn’t enough room to get out of one’s seat even when everyone in the aisle vacates.

ORD
ATL
Excellent 9.0

Friendly staff, comfortable seats (considering). No issues with seating which was a welcome change for me.

DEN
SFO
Excellent 8.3

After a 2 hour delay we boarded to free DirectTV. Thanks United!

Gate agent, grumpy. Some how she thought it was my fault they offered me a cheap ticket to purchase. Regardless of the price I, or anyone else pays, we should all be treated equally with dignity and professionalism.

IAH
CUN
Okay 5.0

Seats uncomfortable, crew rude to other passengers

IAH
MCO
Good 6.6

There was no free in-flight entertainment available on the tv screens. Half of the screens didn't work. The seat belts were not long enough to accommodate the passenger sitting beside me. The space for my personal item was smaller than the other flight.

Sat, Jun 2
STL
CUN
13h 36m
Wed, Jun 6
CUN
STL
10h 12m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25860 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
RDU
Good 7.0

Landed on time. AA is mostly on or before schedule. Definitely like that part. Smooth flying as well.

No interactions with the crew this time. Boarding is okay.

DCA
LGA
Okay 4.6

Good crew on board

Poor communication, continued delays of flight. Poor on ground staff at dca

DFW
PHL
Good 7.6

The process of boarding, baggage check, etc

DCA
SDF
Good 6.0

Potable water was down so no coffee, tea, or more important... water to wash hands. Then they didn’t have my second choice of beverages after coffee either.

CLT
PWM
Okay 5.0

All the different prices for seats. I think it is a stupid system. Miss the good old days of air travel.

Sun, Feb 11
STL
CUN
17h 25m
Sat, Feb 17
CUN
STL
15h 52m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Jan 5
STL
CUN
3h 16m
Wed, Jan 10
CUN
STL
3h 15m
Trip: 6 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
LAX
COS
Excellent 10.0

the people around me

2.99 coffee.....no refill.....

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.

SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

Thu, Feb 1
STL
CUN
20h 50m
Tue, Feb 6
CUN
STL
7h 15m
Trip: 6 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
ACA
MEX
Good 6.0

Smooth flight

People make you feel dumb when you have a question or they need to repeat something they mentioned before. Is very hard to understand sometimes trough the speaker.

MEX
IAD
Good 6.0

Same

Same

ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

SFO
MEX
Good 7.3

I like that there are USB charging ports under the tv for every seat.

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

Thu, Feb 1
STL
CUN
24h 35m
Tue, Feb 6
CUN
STL
8h 17m
Trip: 6 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

ACA
MEX
Good 6.0

Smooth flight

People make you feel dumb when you have a question or they need to repeat something they mentioned before. Is very hard to understand sometimes trough the speaker.

SFO
MEX
Good 7.3

I like that there are USB charging ports under the tv for every seat.

Wed, May 9
STL
CUN
7h 41m
Tue, May 15
CUN
STL
17h 25m
Trip: 7 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 5.2

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.

LAX
COS
Excellent 10.0

the people around me

2.99 coffee.....no refill.....

PHL
PBI
Excellent 10.0

Nice new clean plane

SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

DEN
SFO
Okay 4.0

Connecting flight was delayed by one hour!!!!!

Sun, Feb 4
STL
CUN
3h 16m
Thu, Feb 8
CUN
STL
3h 15m
Trip: 5 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.

LAX
DEN
Mediocre 3.0

I liked the cheap fare, but it was misleading because once you pay for your seat, bags and water, its just as much as a regular price.

Nickel and dimed for everything. Minimum $5-$25 for a seat, $45 for checked bag, $40 for carry on, $3 coffee, no beverage service. And the plame was filthy to boot. So gross, never again.

DEN
SFO
Okay 4.0

Connecting flight was delayed by one hour!!!!!

LAX
COS
Excellent 10.0

the people around me

2.99 coffee.....no refill.....

STL
CUN
Excellent 10.0

Everything

Nothing.

Wed, Apr 18
STL
CUN
10h 11m
Tue, Apr 24
CUN
STL
9h 46m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
ACA
MEX
Good 6.0

Smooth flight

People make you feel dumb when you have a question or they need to repeat something they mentioned before. Is very hard to understand sometimes trough the speaker.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

Wed, Mar 14
STL
CUN
3h 14m
Wed, Mar 21
CUN
STL
3h 21m
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
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.

LAX
DEN
Mediocre 3.0

I liked the cheap fare, but it was misleading because once you pay for your seat, bags and water, its just as much as a regular price.

Nickel and dimed for everything. Minimum $5-$25 for a seat, $45 for checked bag, $40 for carry on, $3 coffee, no beverage service. And the plame was filthy to boot. So gross, never again.

LAX
COS
Excellent 10.0

the people around me

2.99 coffee.....no refill.....

PHX
DEN
Excellent 8.6

Everything was fine boarded easy, during layover in Denver g or and some food and took a power nap.

Nothing

STL
CUN
Excellent 10.0

Everything

Nothing.

Fri, May 4
STL
CUN
9h 37m
Tue, May 8
CUN
STL
9h 46m
Trip: 5 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

JFK
MEX
Mediocre 2.0

Nothing

They would not let me board the plan even though I made 30 minutes early. Our connecting flight was late. My bags made the flight and I wasn't allowed on.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

Wed, Mar 14
STL
CUN
3h 14m
Wed, Mar 21
CUN
STL
3h 21m
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
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.

LAX
COS
Excellent 10.0

the people around me

2.99 coffee.....no refill.....

PHX
DEN
Excellent 8.6

Everything was fine boarded easy, during layover in Denver g or and some food and took a power nap.

Nothing

PHL
PBI
Excellent 10.0

Nice new clean plane

DEN
AUS
Mediocre 2.6

Not much

Same as previous flight

Wed, Apr 18
STL
CUN
3h 16m
Mon, Apr 23
CUN
STL
3h 21m
Trip: 6 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
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.

PHX
DEN
Okay 4.3

Boarding was good

How do you board a multi-million dollar aircraft, yet still find yourself in an old western tv show. Easy, fly Frontier Airlines. The seats were like riding on an old horse buggy. Hard and unforgiving. The only positive was I didn’t get any slivers in my butt. No complimentary anything. Even the old settlers from the past could rustle up something simple to eat and drink, but not on Frontier. They need to get up to speed in this department, other airlines are starting to give drinks and snacks again for the long wagon ride in front of them.

PHL
PBI
Excellent 10.0

Nice new clean plane

LAX
DEN
Mediocre 3.0

I liked the cheap fare, but it was misleading because once you pay for your seat, bags and water, its just as much as a regular price.

Nickel and dimed for everything. Minimum $5-$25 for a seat, $45 for checked bag, $40 for carry on, $3 coffee, no beverage service. And the plame was filthy to boot. So gross, never again.

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.

Mon, Mar 12
STL
CUN
26h 19m
Sun, Mar 18
CUN
STL
18h 34m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

JFK
MEX
Mediocre 2.0

Nothing

They would not let me board the plan even though I made 30 minutes early. Our connecting flight was late. My bags made the flight and I wasn't allowed on.

Mon, Jun 18
STL
CUN
7h 41m
Mon, Jun 25
CUN
STL
3h 13m
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
LAX
COS
Excellent 10.0

the people around me

2.99 coffee.....no refill.....

SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

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.

STL
CUN
Excellent 10.0

Everything

Nothing.

PHX
DEN
Okay 4.3

Boarding was good

How do you board a multi-million dollar aircraft, yet still find yourself in an old western tv show. Easy, fly Frontier Airlines. The seats were like riding on an old horse buggy. Hard and unforgiving. The only positive was I didn’t get any slivers in my butt. No complimentary anything. Even the old settlers from the past could rustle up something simple to eat and drink, but not on Frontier. They need to get up to speed in this department, other airlines are starting to give drinks and snacks again for the long wagon ride in front of them.

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