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$300+ Cheap flights from Cancún (CUN) to Key West (EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — EYW
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Cancún to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Cancún (CUN) to Key West (EYW). 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 September 11, 2025.

Round-trip from

$373
(Kiwi.com)

One-way from

$300
(American Airlines)
From Cancun to Key West
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One-way flight from Cancun to Key West
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Find flight deals from Cancún to Key West

Cheapest flights from Cancún to Key West
Explore the most affordable flight options available from Cancún to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:09 amCUN - EYW
1 stop22h 06mMultiple Airlines
Sun 11/28:55 amEYW - CUN
1 stop24h 09mMultiple Airlines
Deal found 9/11$373
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/264:20 pmCUN - EYW
2 stops17h 32mAmerican Airlines
Sun 11/27:53 pmEYW - CUN
2 stops17h 31mAmerican Airlines
Deal found 9/11$538

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cancún to Key West 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 September 11, 2025.
Use the filters below to find and compare flights from Cancún to Key West that are best for you.

Fly from

Cancún

Fly to

Key West

Route

Depart

Return

Price

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 10/26

9:09 am-8:15 am

1 stop22h 06m

Key West

Sun 11/2

8:55 am-9:04 am

1 stop24h 09m

$373

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 10/26

4:20 pm-10:52 am

2 stops17h 32m

Key West

Sun 11/2

7:53 pm-1:24 pm

2 stops17h 31m

$538

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Tue 1/6

2:05 pm-6:32 pm

1 stop4h 27m

$300

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Tue 1/6

6:30 am-3:17 pm

2 stops32h 47m

$306

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Mon 1/5

11:50 am-4:44 pm

1 stop4h 54m

$331

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Tue 1/6

4:18 pm-9:06 am

3 stops40h 48m

$357

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Mon 1/5

8:40 pm-10:09 am

3 stops37h 29m

$453

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Mon 1/5

8:39 am-3:17 pm

2 stops30h 38m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Cancún to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Cancún 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 Cancún to Key West. 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 Cancún to Key West?

    Departing from Cancún to Key West will take you 17h 32m. Airlines will cover a distance of 406 mi.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Cancún to Key West?

    Currently, August is the cheapest month in which you can book a flight from Cancún to Key West (average of $328). Flying from Cancún to Key West in March is currently the most expensive (average of $491). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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