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$178+ Cheap flights from Key West (EYW) to Cancún (CUN)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — CUN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap 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 July 3, 2025.

Round-trip from

$438
(Kiwi.com)

One-way from

$178
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$619
From Key West to Cancun
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One-way flight from Key West to Cancun
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Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Sat 8/233:25 pmEYW - CUN
2 stops22h 12mMultiple Airlines
Wed 8/279:14 amCUN - EYW
1 stop26h 53mMultiple Airlines
Deal found 7/2$438
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 11/188:12 amEYW - CUN
1 stop7h 53mAmerican Airlines
Sat 11/2211:40 amCUN - EYW
1 stop6h 53mAmerican Airlines
Deal found 7/2$492
This WestJet deal was found by Cheapflights users on 7/2. 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.
Sat 8/237:00 amEYW - CUN
2 stops27h 23mWestJet
Wed 8/2711:25 amCUN - EYW
2 stops29h 00mWestJet
Deal found 7/2$1,386

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 July 3, 2025.
Use the filters below to find and compare flights from Key West to Cancún that are best for you.

Fly from

Key West

Fly to

Cancún

Route

Depart

Return

Price

Key WestCancún

EYW - CUN

EYWCUN

Key West

Sat 8/23

3:25 pm-12:37 pm

2 stops22h 12m

Cancun

Wed 8/27

9:14 am-1:07 pm

1 stop26h 53m

$438

Key WestCancún

EYW - CUN

EYWCUN

Key West

Tue 11/18

8:12 am-4:05 pm

1 stop7h 53m

Cancun

Sat 11/22

11:40 am-6:33 pm

1 stop6h 53m

$492

Key WestCancún

EYW - CUN

EYWCUN

Key West

Sat 8/23

7:00 am-9:23 am

2 stops27h 23m

Cancun

Wed 8/27

11:25 am-5:25 pm

2 stops29h 00m

$1,386

Key WestCancún

EYW - CUN

EYWCUN

Key West

Thu 9/4

8:55 am-8:11 am

1 stop24h 16m

$178

Key WestCancún

EYW - CUN

EYWCUN

Key West

Tue 12/30

7:35 pm-12:10 pm

1 stop16h 35m

$254

Key WestCancún

EYW - CUN

EYWCUN

Key West

Tue 12/30

4:05 pm-3:59 pm

3 stops23h 54m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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.

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cancún. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Key West to Cancún, such as United Airlines, American Airlines, and WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,861 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,917 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What are the cheapest airlines flying from Key West to Cancún round-trip?

    According to our current data, American Airlines ($492), and WestJet ($1,386) offers the cheapest pricing from Key West to Cancún. American Airlines is priced at 13% lower than the current average price of a flight leaving 3 months from now.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Key West to Cancún (average of $360). Flying from Key West to Cancún in March is currently the most expensive (average of $492). 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.

See more FAQs

Traveling to a place near Key West?

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

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Top airline flying from Key West to Cancún

Discover the top airline that operate flights from Key West to Cancún. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$439Average$546FlexibilityNo cancel feeOn-time71%

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