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Cheap flights from Key West to Cancún from $396

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to Cancún departing on 9/7. 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.
Delta Logo
7:35 am - 9:10 pmEYW  Key West-CUN Cancun
13h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:40 pm - 8:02 pmCUN  Cancun-EYW Key West
6h 22m1 stop Atlanta Hartsfield-Jackson
$518Delta
Wed, Nov 18 - Wed, Nov 25
Aeromexico Logo
7:40 am - 1:30 amEYW  Key West-CUN Cancun
18h 50m2 stops Atlanta Hartsfield-Jackson Mexico City Benito Juarez
Aeromexico Logo
6:03 am - 8:00 pmCUN  Cancun-EYW Key West
12h 57m2 stops Mexico City Benito Juarez Atlanta Hartsfield-Jackson
$529Aeromexico
Sat, Sep 5 - Fri, Sep 11
Aeromexico Logo
2:00 pm - 7:50 pmEYW  Key West-CUN Cancun
6h 50m1 stop Atlanta Hartsfield-Jackson
Aeromexico Logo
8:05 am - 8:00 pmCUN  Cancun-EYW Key West
10h 55m1 stop Atlanta Hartsfield-Jackson
$538Aeromexico
Fri, Oct 2 - Sat, Oct 3
Aeromexico Logo
7:40 am - 7:50 pmEYW  Key West-CUN Cancun
13h 10m1 stop Atlanta Hartsfield-Jackson
Aeromexico Logo
6:04 am - 8:00 pmCUN  Cancun-EYW Key West
12h 56m2 stops Mexico City Benito Juarez Atlanta Hartsfield-Jackson
$555Aeromexico
Fri, Oct 2 - Sat, Oct 3
American Airlines Logo
6:06 am - 1:22 pmEYW  Key West-CUN Cancun
7h 16m1 stop Miami
American Airlines Logo
1:12 pm - 11:56 pmCUN  Cancun-EYW Key West
10h 44m1 stop Miami
$562American Airlines
Mon, Jan 11 - Thu, Jan 14
American Airlines Logo
6:43 pm - 10:45 amEYW  Key West-CUN Cancun
16h 02m2 stops Charlotte Douglas Miami
American Airlines Logo
5:21 pm - 11:56 pmCUN  Cancun-EYW Key West
6h 35m1 stop Miami
$567American Airlines
Mon, Jan 11 - Thu, Jan 14
Delta Logo
7:40 am - 8:05 pmEYW  Key West-CUN Cancun
13h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:05 am - 5:20 pmCUN  Cancun-EYW Key West
8h 15m1 stop Atlanta Hartsfield-Jackson
$569Delta
Fri, Aug 28 - Wed, Sep 2
Delta Logo
7:35 am - 9:10 pmEYW  Key West-CUN Cancun
13h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:40 pm - 8:02 pmCUN  Cancun-EYW Key West
6h 22m1 stop Atlanta Hartsfield-Jackson
$602Delta
Tue, Nov 17 - Wed, Nov 25
American Airlines Logo
7:47 pm - 3:25 pmEYW  Key West-CUN Cancun
20h 38m1 stop Miami
American Airlines Logo
12:34 pm - 7:17 pmCUN  Cancun-EYW Key West
5h 43m1 stop Miami
$612American Airlines
Wed, Sep 16 - Wed, Sep 30
Delta Logo
2:00 pm - 9:10 pmEYW  Key West-CUN Cancun
7h 10m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:40 pm - 8:02 pmCUN  Cancun-EYW Key West
6h 22m1 stop Atlanta Hartsfield-Jackson
$642Delta
Mon, Nov 16 - Wed, Nov 25

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Delta flights from Key West to Cancún

Our best Delta deals on Key West to Cancún flight tickets
Delta
Nov 18
EYW7:35 amKey West
13h 35m
1 stop
CUN9:10 pmCancun
Nov 25
CUN1:40 pmCancun
6h 22m
1 stop
EYW8:02 pmKey West
$518
Delta
Aug 28
EYW7:40 amKey West
13h 25m
1 stop
CUN8:05 pmCancun
Sep 2
CUN8:05 amCancun
8h 15m
1 stop
EYW5:20 pmKey West
$569
Delta
Nov 17
EYW7:35 amKey West
13h 35m
1 stop
CUN9:10 pmCancun
Nov 25
CUN1:40 pmCancun
6h 22m
1 stop
EYW8:02 pmKey West
$602

American Airlines flights from Key West to Cancún

Our best American Airlines deals on Key West to Cancún flight tickets
American Airlines
Jan 11
EYW6:06 amKey West
7h 16m
1 stop
CUN1:22 pmCancun
Jan 14
CUN1:12 pmCancun
10h 44m
1 stop
EYW11:56 pmKey West
$562
American Airlines
Jan 11
EYW6:43 pmKey West
16h 02m
2 stops
CUN10:45 amCancun
Jan 14
CUN5:21 pmCancun
6h 35m
1 stop
EYW11:56 pmKey West
$567
American Airlines
Sep 16
EYW7:47 pmKey West
20h 38m
1 stop
CUN3:25 pmCancun
Sep 30
CUN12:34 pmCancun
5h 43m
1 stop
EYW7:17 pmKey West
$612

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 August 13, 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 Key West - CUN Cancun

EYWCUN

Key West

Wed 11/18

7:35 am-9:10 pm

1 stop13h 35m

Cancun

Wed 11/25

1:40 pm-8:02 pm

1 stop6h 22m

$518

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Sat 9/5

7:40 am-1:30 am

2 stops18h 50m

Cancun

Fri 9/11

6:03 am-8:00 pm

2 stops12h 57m

$529

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Fri 10/2

2:00 pm-7:50 pm

1 stop6h 50m

Cancun

Sat 10/3

8:05 am-8:00 pm

1 stop10h 55m

$538

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Fri 10/2

7:40 am-7:50 pm

1 stop13h 10m

Cancun

Sat 10/3

6:04 am-8:00 pm

2 stops12h 56m

$555

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Mon 1/11

6:06 am-1:22 pm

1 stop7h 16m

Cancun

Thu 1/14

1:12 pm-11:56 pm

1 stop10h 44m

$562

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Mon 1/11

6:43 pm-10:45 am

2 stops16h 02m

Cancun

Thu 1/14

5:21 pm-11:56 pm

1 stop6h 35m

$567

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Fri 8/28

7:40 am-8:05 pm

1 stop13h 25m

Cancun

Wed 9/2

8:05 am-5:20 pm

1 stop8h 15m

$569

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Tue 11/17

7:35 am-9:10 pm

1 stop13h 35m

Cancun

Wed 11/25

1:40 pm-8:02 pm

1 stop6h 22m

$602

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Wed 9/16

7:47 pm-3:25 pm

1 stop20h 38m

Cancun

Wed 9/30

12:34 pm-7:17 pm

1 stop5h 43m

$612
Quickest round-trip

Key WestCancún

EYW Key West - CUN Cancun

EYWCUN

Key West

Mon 11/16

2:00 pm-9:10 pm

1 stop7h 10m

Cancun

Wed 11/25

1:40 pm-8:02 pm

1 stop6h 22m

$642

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 Cancún from

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

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 Key West to Cancun?

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

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

6h 14m

Direct flights

None
The fastest flight from Key West to Cancún takes 6h 14m
There are no direct flights from Key West to Cancún. There are no popular flight routes from Key West to Cancún.
Search flight deals

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 6h 14m.

  • 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.

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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