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Cheap flights from Cancún to Key West from $268

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cancún to Key West departing on 8/21. 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
0 bags

Find the cheapest flights from Cancún to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aeromexico Logo
11:10 am - 7:49 pm
CUN
-
EYW
7h 39m
1 stop
Aeromexico Logo
2:28 pm - 8:25 pm
EYW
-
CUN
6h 57m
1 stop
$476Aeromexico
Thu, Jun 4 - Mon, Jun 8
Aeromexico Logo
11:10 am - 7:49 pm
CUN
-
EYW
7h 39m
1 stop
Aeromexico Logo
7:50 am - 8:25 pm
EYW
-
CUN
13h 35m
1 stop
$477Aeromexico
Thu, Jun 4 - Mon, Jun 8
Aeromexico Logo
6:07 am - 7:49 pm
CUN
-
EYW
12h 42m
2 stops
Aeromexico Logo
7:50 am - 8:25 pm
EYW
-
CUN
13h 35m
1 stop
$555Aeromexico
Thu, Jun 4 - Mon, Jun 8
United Airlines Logo
7:51 am - 3:07 pm
CUN
-
EYW
30h 16m
2 stops
United Airlines Logo
3:50 pm - 9:50 am
EYW
-
CUN
43h 00m
2 stops
$654United Airlines
Sun, May 31 - Thu, Jun 4
United Airlines Logo
5:22 pm - 3:07 pm
CUN
-
EYW
20h 45m
2 stops
United Airlines Logo
3:50 pm - 7:19 pm
EYW
-
CUN
28h 29m
2 stops
$794United Airlines
Sun, May 31 - Thu, Jun 4
Aeromexico Logo
8:00 am - 7:49 pm
CUN
-
EYW
10h 49m
1 stop
Aeromexico Logo
7:30 am - 10:55 pm
EYW
-
CUN
16h 25m
2 stops
$814Aeromexico
Sun, May 31 - Thu, Jun 4
Aeromexico Logo
8:00 am - 7:49 pm
CUN
-
EYW
10h 49m
1 stop
Aeromexico Logo
7:30 am - 9:28 pm
EYW
-
CUN
14h 58m
2 stops
$815Aeromexico
Sun, May 31 - Thu, Jun 4
Aeromexico Logo
6:07 am - 7:49 pm
CUN
-
EYW
12h 42m
2 stops
Aeromexico Logo
2:28 pm - 2:30 pm
EYW
-
CUN
25h 02m
2 stops
$824Aeromexico
Thu, Jun 4 - Mon, Jun 8
United Airlines Logo
7:51 am - 3:07 pm
CUN
-
EYW
30h 16m
2 stops
United Airlines Logo
3:50 pm - 7:19 pm
EYW
-
CUN
28h 29m
2 stops
$892United Airlines
Sun, May 31 - Thu, Jun 4
Aeromexico Logo
8:00 am - 7:49 pm
CUN
-
EYW
10h 49m
1 stop
Aeromexico Logo
7:30 am - 8:16 pm
EYW
-
CUN
13h 46m
1 stop
$895Aeromexico
Sun, May 31 - Thu, Jun 4

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Aeromexico flights from Cancún to Key West

Our best Aeromexico deals on Cancún to Key West flight tickets
Aeromexico
Jun 4
CUN11:10 amCancun
7h 39m
1 stop
EYW7:49 pmKey West
Jun 8
EYW2:28 pmKey West
6h 57m
1 stop
CUN8:25 pmCancun
$476
Aeromexico
Jun 4
CUN6:07 amCancun
12h 42m
2 stops
EYW7:49 pmKey West
Jun 8
EYW7:50 amKey West
13h 35m
1 stop
CUN8:25 pmCancun
$477
Aeromexico
Jun 4
CUN6:07 amCancun
12h 42m
2 stops
EYW7:49 pmKey West
Jun 8
EYW7:50 amKey West
13h 35m
1 stop
CUN8:25 pmCancun
$555

United Airlines flights from Cancún to Key West

Our best United Airlines deals on Cancún to Key West flight tickets
United Airlines
May 31
CUN7:51 amCancun
30h 16m
2 stops
EYW3:07 pmKey West
Jun 4
EYW3:50 pmKey West
43h 00m
2 stops
CUN9:50 amCancun
$654
United Airlines
May 31
CUN7:51 amCancun
30h 16m
2 stops
EYW3:07 pmKey West
Jun 4
EYW3:50 pmKey West
28h 29m
2 stops
CUN7:19 pmCancun
$892

momondo 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, momondo users made 832,500 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from Cancún to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Thu 6/4

11:10 am-7:49 pm

1 stop7h 39m

Key West

Mon 6/8

2:28 pm-8:25 pm

1 stop6h 57m

$476

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Thu 6/4

11:10 am-7:49 pm

1 stop7h 39m

Key West

Mon 6/8

7:50 am-8:25 pm

1 stop13h 35m

$477

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Thu 6/4

6:07 am-7:49 pm

2 stops12h 42m

Key West

Mon 6/8

7:50 am-8:25 pm

1 stop13h 35m

$555

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 5/31

7:51 am-3:07 pm

2 stops30h 16m

Key West

Thu 6/4

3:50 pm-9:50 am

2 stops43h 00m

$654

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 5/31

5:22 pm-3:07 pm

2 stops20h 45m

Key West

Thu 6/4

3:50 pm-7:19 pm

2 stops28h 29m

$794

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 5/31

8:00 am-7:49 pm

1 stop10h 49m

Key West

Thu 6/4

7:30 am-10:55 pm

2 stops16h 25m

$814

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 5/31

8:00 am-7:49 pm

1 stop10h 49m

Key West

Thu 6/4

7:30 am-9:28 pm

2 stops14h 58m

$815

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Thu 6/4

6:07 am-7:49 pm

2 stops12h 42m

Key West

Mon 6/8

2:28 pm-2:30 pm

2 stops25h 02m

$824

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 5/31

7:51 am-3:07 pm

2 stops30h 16m

Key West

Thu 6/4

3:50 pm-7:19 pm

2 stops28h 29m

$892

CancúnKey West

CUN - EYW

CUNEYW

Cancun

Sun 5/31

8:00 am-7:49 pm

1 stop10h 49m

Key West

Thu 6/4

7:30 am-8:16 pm

1 stop13h 46m

$895

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Cancún to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Cancun to Key West?

United Airlines is the most popular carrier operating from Cancun to Key West

When to book flights from Cancún to Key West

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

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

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

Fastest flight time

30h 16m

Direct flights

None
The fastest flight from Cancún to Key West takes 30h 16m
There are no direct flights from Cancún to Key West. There are no popular flight routes from Cancún to Key West.
Search flight deals

Frequently asked questions about flying from Cancún to Key West

  • How far is Cancun to Key West by plane?

    The straight-line distance from Cancun to Key West is 396.6 mi. By plane, this route typically takes 30h 16m.

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

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

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

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

    The necessary travel and health documents for your Key West Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Key West from Cancún.

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

momondo does allow users to show only those flights to Key West from Cancún which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from Cancún.

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

If you are simply researching potential flights to Key West, momondo offers a useful price alert feature which will track prices for flights to Key West from Cancún and alert you when they change.

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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