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Cheap flights from South America to Key West from $1,077

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from South America to Key West departing on 4/2. 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

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Find the cheapest flights from South America to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:30 pm - 7:12 pm
EZE
-
EYW
20h 42m
1 stop
American Airlines Logo
6:45 am - 8:50 am
EYW
-
EZE
25h 05m
1 stop
$1,077American Airlines
Thu, Apr 2 - Tue, Apr 21
American Airlines Logo
11:30 pm - 7:12 pm
EZE
-
EYW
20h 42m
1 stop
American Airlines Logo
2:29 pm - 8:50 am
EYW
-
EZE
17h 21m
2 stops
$1,127American Airlines
Thu, Apr 2 - Tue, Apr 21
United Airlines Logo
9:00 pm - 3:57 pm
EZE
-
EYW
19h 57m
1 stop
United Airlines Logo
3:47 pm - 8:00 am
EYW
-
EZE
39h 13m
2 stops
$1,169United Airlines
Sun, Apr 5 - Tue, Apr 21
United Airlines Logo
9:00 pm - 11:24 am
EZE
-
EYW
39h 24m
2 stops
United Airlines Logo
6:22 pm - 8:00 am
EYW
-
EZE
36h 38m
2 stops
$1,206United Airlines
Thu, Apr 2 - Wed, Apr 22
United Airlines Logo
9:00 pm - 3:57 pm
EZE
-
EYW
19h 57m
1 stop
United Airlines Logo
4:38 pm - 8:00 am
EYW
-
EZE
14h 22m
1 stop
$1,212United Airlines
Sun, Apr 5 - Fri, Apr 24
United Airlines Logo
9:00 pm - 11:24 am
EZE
-
EYW
39h 24m
2 stops
United Airlines Logo
3:47 pm - 8:00 am
EYW
-
EZE
39h 13m
2 stops
$1,249United Airlines
Thu, Apr 2 - Thu, Apr 23
American Airlines Logo
8:30 pm - 1:19 pm
EZE
-
EYW
17h 49m
1 stop
American Airlines Logo
11:24 am - 6:10 am
EYW
-
EZE
17h 46m
1 stop
$1,288American Airlines
Fri, Apr 3 - Thu, Apr 23
United Airlines Logo
9:00 pm - 3:57 pm
EZE
-
EYW
19h 57m
1 stop
United Airlines Logo
4:38 pm - 8:00 am
EYW
-
EZE
14h 22m
1 stop
$1,292United Airlines
Sun, Apr 5 - Sun, Apr 19
American Airlines Logo
10:20 pm - 4:49 pm
EZE
-
EYW
19h 29m
1 stop
American Airlines Logo
6:45 am - 7:15 am
EYW
-
EZE
23h 30m
1 stop
$1,320American Airlines
Sat, Apr 4 - Fri, Apr 24
United Airlines Logo
9:00 pm - 11:24 am
EZE
-
EYW
39h 24m
2 stops
United Airlines Logo
4:38 pm - 8:00 am
EYW
-
EZE
14h 22m
1 stop
$1,329United Airlines
Thu, Apr 2 - Sun, Apr 19

United Airlines flights from South America to Key West

Our best United Airlines deals on South America to Key West flight tickets
United Airlines
Apr 5
EZE9:00 pmBuenos Aires Ministro Pistarini
19h 57m
1 stop
EYW3:57 pmKey West
Apr 20
EYW6:22 pmKey West
36h 38m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
$1,169
United Airlines
Apr 2
EZE9:00 pmBuenos Aires Ministro Pistarini
39h 24m
2 stops
EYW11:24 amKey West
Apr 22
EYW6:22 pmKey West
36h 38m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
$1,206
United Airlines
Apr 5
EZE9:00 pmBuenos Aires Ministro Pistarini
19h 57m
1 stop
EYW3:57 pmKey West
Apr 24
EYW4:38 pmKey West
14h 22m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
$1,212

American Airlines flights from South America to Key West

Our best American Airlines deals on South America to Key West flight tickets
American Airlines
Apr 2
EZE11:30 pmBuenos Aires Ministro Pistarini
20h 42m
1 stop
EYW7:12 pmKey West
Apr 21
EYW6:45 amKey West
25h 05m
1 stop
EZE8:50 amBuenos Aires Ministro Pistarini
$1,077
American Airlines
Apr 2
EZE11:30 pmBuenos Aires Ministro Pistarini
20h 42m
1 stop
EYW7:12 pmKey West
Apr 21
EYW2:29 pmKey West
17h 21m
2 stops
EZE8:50 amBuenos Aires Ministro Pistarini
$1,127
American Airlines
Apr 3
EZE8:30 pmBuenos Aires Ministro Pistarini
17h 49m
1 stop
EYW1:19 pmKey West
Apr 23
EYW11:24 amKey West
17h 46m
1 stop
EZE6:10 amBuenos Aires Ministro Pistarini
$1,288

momondo Fare Finder

 
Customize your flight search to find flights from South America 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 February 19, 2026.
Use the filters below to find and compare flights from South America to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Thu 4/2

11:30 pm-7:12 pm

1 stop20h 42m

Key West

Tue 4/21

6:45 am-8:50 am

1 stop25h 05m

$1,077

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Thu 4/2

11:30 pm-7:12 pm

1 stop20h 42m

Key West

Tue 4/21

2:29 pm-8:50 am

2 stops17h 21m

$1,127

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Sun 4/5

9:00 pm-3:57 pm

1 stop19h 57m

Key West

Tue 4/21

3:47 pm-8:00 am

2 stops39h 13m

$1,169

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Thu 4/2

9:00 pm-11:24 am

2 stops39h 24m

Key West

Wed 4/22

6:22 pm-8:00 am

2 stops36h 38m

$1,206

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Sun 4/5

9:00 pm-3:57 pm

1 stop19h 57m

Key West

Fri 4/24

4:38 pm-8:00 am

1 stop14h 22m

$1,212

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Thu 4/2

9:00 pm-11:24 am

2 stops39h 24m

Key West

Thu 4/23

3:47 pm-8:00 am

2 stops39h 13m

$1,249

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Fri 4/3

8:30 pm-1:19 pm

1 stop17h 49m

Key West

Thu 4/23

11:24 am-6:10 am

1 stop17h 46m

$1,288

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Sun 4/5

9:00 pm-3:57 pm

1 stop19h 57m

Key West

Sun 4/19

4:38 pm-8:00 am

1 stop14h 22m

$1,292

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Sat 4/4

10:20 pm-4:49 pm

1 stop19h 29m

Key West

Fri 4/24

6:45 am-7:15 am

1 stop23h 30m

$1,320

Buenos AiresKey West

EZE - EYW

EZEEYW

Buenos Aires Ministro Pistarini

Thu 4/2

9:00 pm-11:24 am

2 stops39h 24m

Key West

Sun 4/19

4:38 pm-8:00 am

1 stop14h 22m

$1,329

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Key West from

How to get the cheapest flight ticket from South America 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

Can stopping save me money on South America to Key West flights?

You could potentially save up to 31% on your flight if you consider stops on a South America to Key West flight.

Cheap South America to Key West flight deals and tips

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

Fastest flight time

15h 46m

Direct flights

None
The fastest flight from South America to Key West takes 15h 46m
There are no direct flights from South America to Key West. There are no popular flight routes from South America to Key West.
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  • When did momondo last update prices for flights from South America to Key West Airport?

    Prices for flights from South America to Key West Airport are refreshed on a daily basis.

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

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

    The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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 South America to Key West?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from South America to Key West. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for South America to Key West flights to just show those with flexible booking policies.

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

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 South America to Key West.

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

Yes momondo offers price alerts on flights to Key West from South America. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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