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Cheap flights from Key West to Cancún from $489

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to Cancún departing on 8/24. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Key West to Cancún

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aeromexico Logo
7:40 am - 11:31 pm
EYW
-
CUN
16h 51m
2 stops
Aeromexico Logo
6:05 am - 7:57 pm
CUN
-
EYW
12h 52m
2 stops
$489Aeromexico
Mon, Aug 24 - Thu, Aug 27
Delta Logo
1:59 pm - 8:05 pm
EYW
-
CUN
7h 06m
1 stop
Delta Logo
12:30 pm - 7:57 pm
CUN
-
EYW
6h 27m
1 stop
$580Delta
Thu, Aug 6 - Thu, Aug 13
Aeromexico Logo
7:40 am - 11:31 pm
EYW
-
CUN
16h 51m
2 stops
Aeromexico Logo
6:05 am - 7:57 pm
CUN
-
EYW
12h 52m
2 stops
$591Aeromexico
Mon, Aug 24 - Thu, Aug 27
American Airlines Logo
10:15 am - 3:30 pm
EYW
-
CUN
6h 15m
1 stop
American Airlines Logo
2:30 pm - 10:56 am
CUN
-
EYW
19h 26m
2 stops
$594American Airlines
Thu, Aug 6 - Thu, Aug 13
American Airlines Logo
10:15 am - 3:30 pm
EYW
-
CUN
6h 15m
1 stop
American Airlines Logo
3:37 pm - 10:56 am
CUN
-
EYW
18h 19m
2 stops
$599American Airlines
Sun, Aug 9 - Sun, Aug 16
American Airlines Logo
7:14 pm - 11:33 am
EYW
-
CUN
17h 19m
2 stops
American Airlines Logo
3:37 pm - 9:44 am
CUN
-
EYW
17h 07m
2 stops
$611American Airlines
Sun, Aug 9 - Sun, Aug 16
American Airlines Logo
12:06 pm - 2:25 pm
EYW
-
CUN
3h 19m
1 stop
American Airlines Logo
1:10 pm - 6:24 pm
CUN
-
EYW
4h 14m
1 stop
$639American Airlines
Thu, Oct 15 - Mon, Oct 19
American Airlines Logo
12:06 pm - 2:25 pm
EYW
-
CUN
3h 19m
1 stop
American Airlines Logo
1:10 pm - 6:24 pm
CUN
-
EYW
4h 14m
1 stop
$644American Airlines
Thu, Oct 15 - Sun, Oct 18
American Airlines Logo
7:52 pm - 1:10 pm
EYW
-
CUN
18h 18m
2 stops
American Airlines Logo
1:10 pm - 6:24 pm
CUN
-
EYW
4h 14m
1 stop
$649American Airlines
Thu, Oct 15 - Sun, Oct 18
Aeromexico Logo
7:40 am - 1:00 pm
EYW
-
CUN
6h 20m
1 stop
Aeromexico Logo
8:05 am - 5:20 pm
CUN
-
EYW
8h 15m
1 stop
$656Aeromexico
Mon, Aug 3 - Thu, Aug 6

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American Airlines flights from Key West to Cancún

Our best American Airlines deals on Key West to Cancún flight tickets
American Airlines
Aug 6
EYW10:15 amKey West
6h 15m
1 stop
CUN3:30 pmCancun
Aug 13
CUN2:30 pmCancun
19h 26m
2 stops
EYW10:56 amKey West
$594
American Airlines
Aug 9
EYW10:15 amKey West
6h 15m
1 stop
CUN3:30 pmCancun
Aug 16
CUN3:37 pmCancun
18h 19m
2 stops
EYW10:56 amKey West
$599
American Airlines
Aug 9
EYW7:14 pmKey West
17h 19m
2 stops
CUN11:33 amCancun
Aug 16
CUN3:37 pmCancun
17h 07m
2 stops
EYW9:44 amKey West
$611

Aeromexico flights from Key West to Cancún

Our best Aeromexico deals on Key West to Cancún flight tickets
Aeromexico
Aug 24
EYW7:40 amKey West
16h 51m
2 stops
CUN11:31 pmCancun
Aug 27
CUN6:05 amCancun
12h 52m
2 stops
EYW7:57 pmKey West
$489
Aeromexico
Aug 24
EYW7:40 amKey West
16h 51m
2 stops
CUN11:31 pmCancun
Aug 27
CUN6:05 amCancun
12h 52m
2 stops
EYW7:57 pmKey West
$591
Aeromexico
Aug 3
EYW7:40 amKey West
6h 20m
1 stop
CUN1:00 pmCancun
Aug 6
CUN8:05 amCancun
8h 15m
1 stop
EYW5:20 pmKey West
$656

momondo Fare Finder

 
Customize your flight search to find flights from Key West 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 June 25, 2026.
Use the filters below to find and compare flights from Key West to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestCancún

EYW - CUN

EYWCUN

Key West

Mon 8/24

7:40 am-11:31 pm

2 stops16h 51m

Cancun

Thu 8/27

6:05 am-7:57 pm

2 stops12h 52m

$489

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 8/6

1:59 pm-8:05 pm

1 stop7h 06m

Cancun

Thu 8/13

12:30 pm-7:57 pm

1 stop6h 27m

$580

Key WestCancún

EYW - CUN

EYWCUN

Key West

Mon 8/24

7:40 am-11:31 pm

2 stops16h 51m

Cancun

Thu 8/27

6:05 am-7:57 pm

2 stops12h 52m

$591

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 8/6

10:15 am-3:30 pm

1 stop6h 15m

Cancun

Thu 8/13

2:30 pm-10:56 am

2 stops19h 26m

$594

Key WestCancún

EYW - CUN

EYWCUN

Key West

Sun 8/9

10:15 am-3:30 pm

1 stop6h 15m

Cancun

Sun 8/16

3:37 pm-10:56 am

2 stops18h 19m

$599

Key WestCancún

EYW - CUN

EYWCUN

Key West

Sun 8/9

7:14 pm-11:33 am

2 stops17h 19m

Cancun

Sun 8/16

3:37 pm-9:44 am

2 stops17h 07m

$611
Quickest round-trip

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 10/15

12:06 pm-2:25 pm

1 stop3h 19m

Cancun

Mon 10/19

1:10 pm-6:24 pm

1 stop4h 14m

$639

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 10/15

12:06 pm-2:25 pm

1 stop3h 19m

Cancun

Sun 10/18

1:10 pm-6:24 pm

1 stop4h 14m

$644

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 10/15

7:52 pm-1:10 pm

2 stops18h 18m

Cancun

Sun 10/18

1:10 pm-6:24 pm

1 stop4h 14m

$649

Key WestCancún

EYW - CUN

EYWCUN

Key West

Mon 8/3

7:40 am-1:00 pm

1 stop6h 20m

Cancun

Thu 8/6

8:05 am-5:20 pm

1 stop8h 15m

$656

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Key West to Cancún

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

Cheap Key West to Cancún (EYW to CUN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Key West to Cancún

Fastest flight time

16h 34m

Direct flights

None
The fastest flight from Key West to Cancún takes 16h 34m
There are no direct flights from Key West to Cancún. There are no popular flight routes from Key West to Cancún.
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Frequently asked questions about flying from Key West to Cancún

  • How far is Key West to Cancun by plane?

    Key West and Cancun are 396.6 mi apart from one another. A reasonable flight in good conditions will take 16h 34m.

  • When did momondo last update prices for flights from Key West Airport to Cancun Airport?

    Prices for flights from Key West Airport to Cancun Airport refresh daily.

  • How old do you have to be to fly from Key West Airport to Cancun Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Key West Airport to Cancun Airport.

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

    The travel and health documents you'll need for your trip to Cancun Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cancun Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Key West to Cancún

  • How do I get Price Alerts for flights from Key West to Cancún?

    Confirm your travel details to search for the latest offers for flights from Key West to Cancún. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Key West to Cancún with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Cancún?

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

Why use momondo?

Why should I use momondo to find a flight deal from Key West to Cancún?

It is quick and easy to find Key West to Cancún flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cancún that suits you.

Can I find flights from Key West to Cancún with flexible booking policies on momondo?

Flights from Key West to Cancún with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Key West to Cancún?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Key West to Cancún.

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

Price alerts on flights to Cancún from Key West 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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