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$448+ Cheap flights from Key West (EYW) to Cancún (CUN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — CUN
Jun 18 — Jun 251
Thu 6/18
Thu 6/25
1 adult, Economy
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Cheap flight deals from Key West to Cancún

Cheapest flights from Key West to Cancún
Explore the most affordable flight options available from Key West to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 19, 2026.

This Aeromexico deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:50 am
EYW
-
CUN
1 stop13h 35m
Aeromexico
Wed 6/248:00 am
CUN
-
EYW
1 stop10h 53m
Aeromexico
Deal found 5/17$448
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:30 am
EYW
-
CUN
1 stop13h 46m
Delta
Tue 6/98:00 am
CUN
-
EYW
1 stop10h 53m
Delta
Deal found 5/15$554
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:50 am
EYW
-
CUN
1 stop6h 10m
Delta
Mon 8/38:05 am
CUN
-
EYW
1 stop10h 49m
Delta
Deal found 5/16$594
This American Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:40 pm
EYW
-
CUN
2 stops14h 54m
American Airlines
Mon 8/310:34 am
CUN
-
EYW
1 stop7h 14m
American Airlines
Deal found 5/16$633
This American Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:29 pm
EYW
-
CUN
1 stop15h 01m
American Airlines
Tue 6/94:25 pm
CUN
-
EYW
2 stops18h 51m
American Airlines
Deal found 5/15$660
This WestJet deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2211:59 am
EYW
-
CUN
2 stops25h 31m
WestJet
Wed 6/241:30 pm
CUN
-
EYW
2 stops26h 57m
WestJet
Deal found 5/17$1,568

Find flight deals from Key West to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to Cancún (CUN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$448
(Aeromexico)
Provider with most accurate pricing for Key West-Cancun flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-Cancun flights.
Search Deals
From Key West to Cancun
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 19, 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 6/22

7:50 am-8:25 pm

1 stop13h 35m

Cancun

Wed 6/24

8:00 am-7:53 pm

1 stop10h 53m

$448

Key WestCancún

EYW - CUN

EYWCUN

Key West

Fri 6/5

7:30 am-8:16 pm

1 stop13h 46m

Cancun

Tue 6/9

8:00 am-7:53 pm

1 stop10h 53m

$554
Quickest round-trip

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 7/30

7:50 am-1:00 pm

1 stop6h 10m

Cancun

Mon 8/3

8:05 am-7:54 pm

1 stop10h 49m

$594

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 7/30

7:40 pm-11:11 am

2 stops16h 31m

Cancun

Mon 8/3

2:35 pm-10:55 am

2 stops19h 20m

$633

Key WestCancún

EYW - CUN

EYWCUN

Key West

Fri 6/5

7:29 pm-9:30 am

1 stop15h 01m

Cancun

Tue 6/9

4:25 pm-12:16 pm

2 stops18h 51m

$660

Key WestCancún

EYW - CUN

EYWCUN

Key West

Mon 6/22

11:59 am-12:30 pm

2 stops25h 31m

Cancun

Wed 6/24

1:30 pm-5:27 pm

2 stops26h 57m

$1,568

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Key West-Cancún flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-Cancún flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Key West-Cancún flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Key West-Cancún flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-Cancún flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Key West to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún from Key West with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Key West to Cancún. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Key West to Cancún?

    There are many flights that can get you from Key West to Cancún in 13h 35m. Fly via Aeromexico to get the fastest option. Key West and Cancún are separated by a distance of 406 mi.

  • Can I find deals for flights from Key West to Cancún that include hotel bookings?

    Yes. In addition to deals on Key West to Cancún flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key West to Cancún?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Cancún.

  • Can I find deals for business class flights from Key West to Cancún?

    Yes. Cheapflights offers flight deals from Key West to Cancún by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Puerto Aventuras
Punta Sam
Holbox

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