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Cheap flights from Puerto Rico to Key West from $136

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Puerto Rico to Key West departing on 9/19. 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 Puerto Rico to Key West

Recent round-trip flight deals from Puerto Rico to Key West

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:37 pm - 12:34 pm
SJU
-
EYW
18h 57m
1 stop
Multiple Airlines Logo
1:11 pm - 12:56 am
EYW
-
SJU
11h 45m
1 stop
$269Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
5:15 pm - 12:31 pm
SJU
-
EYW
19h 16m
1 stop
Multiple Airlines Logo
3:48 pm - 12:56 am
EYW
-
SJU
9h 08m
1 stop
$281Multiple Airlines
Sun, Aug 30 - Sat, Sep 5
Multiple Airlines Logo
6:35 am - 7:13 pm
SJU
-
EYW
12h 38m
2 stops
Multiple Airlines Logo
3:48 pm - 12:56 am
EYW
-
SJU
9h 08m
1 stop
$321Multiple Airlines
Sun, Aug 30 - Sat, Sep 5
Multiple Airlines Logo
3:10 am - 11:27 am
SJU
-
EYW
8h 17m
1 stop
Multiple Airlines Logo
1:11 pm - 12:56 am
EYW
-
SJU
11h 45m
1 stop
$323Multiple Airlines
Thu, Aug 27 - Mon, Aug 31
Multiple Airlines Logo
5:37 pm - 12:34 pm
SJU
-
EYW
18h 57m
1 stop
Multiple Airlines Logo
5:38 pm - 12:56 am
EYW
-
SJU
31h 18m
2 stops
$370Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
5:22 pm - 7:13 pm
SJU
-
EYW
25h 51m
1 stop
Multiple Airlines Logo
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
$382Multiple Airlines
Sat, Jul 25 - Thu, Jul 30
Multiple Airlines Logo
5:22 pm - 3:27 pm
SJU
-
EYW
22h 05m
1 stop
Multiple Airlines Logo
12:07 pm - 9:43 pm
EYW
-
SJU
9h 36m
1 stop
$389Multiple Airlines
Sat, Jul 25 - Mon, Aug 3
Multiple Airlines Logo
3:10 am - 12:48 pm
SJU
-
EYW
9h 38m
1 stop
Multiple Airlines Logo
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
$398Multiple Airlines
Sat, Jul 25 - Thu, Jul 30
Multiple Airlines Logo
3:10 am - 12:48 pm
SJU
-
EYW
9h 38m
1 stop
Multiple Airlines Logo
12:05 pm - 2:15 am
EYW
-
SJU
14h 10m
1 stop
$399Multiple Airlines
Sat, Jul 25 - Sun, Aug 2
Multiple Airlines Logo
3:10 am - 12:48 pm
SJU
-
EYW
9h 38m
1 stop
Multiple Airlines Logo
3:27 pm - 11:16 am
EYW
-
SJU
19h 49m
1 stop
$404Multiple Airlines
Sat, Jul 25 - Mon, Aug 3

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United Airlines flights from Puerto Rico to Key West

Our best United Airlines deals on Puerto Rico to Key West flight tickets
United Airlines
Jul 23
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 30m
1 stop
EYW1:30 pmKey West
Jul 28
EYW2:26 pmKey West
9h 24m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
$846
United Airlines
Jul 25
SJU6:45 pmSan Juan Luis Munoz Marin Intl
20h 34m
2 stops
EYW3:19 pmKey West
Aug 3
EYW4:00 pmKey West
29h 24m
2 stops
SJU9:24 pmSan Juan Luis Munoz Marin Intl
$917
United Airlines
Jul 23
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 30m
1 stop
EYW1:30 pmKey West
Jul 28
EYW2:26 pmKey West
22h 08m
2 stops
SJU12:34 pmSan Juan Luis Munoz Marin Intl
$956

American Airlines flights from Puerto Rico to Key West

Our best American Airlines deals on Puerto Rico to Key West flight tickets
American Airlines
Jul 26
SJU6:00 amSan Juan Luis Munoz Marin Intl
10h 11m
2 stops
EYW4:11 pmKey West
Aug 1
EYW7:55 pmKey West
13h 50m
1 stop
SJU9:45 amSan Juan Luis Munoz Marin Intl
$576
American Airlines
Jul 24
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 48m
2 stops
EYW6:48 pmKey West
Jul 28
EYW7:33 pmKey West
15h 31m
2 stops
SJU11:04 amSan Juan Luis Munoz Marin Intl
$606
American Airlines
Jul 26
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 48m
2 stops
EYW6:48 pmKey West
Aug 1
EYW7:33 pmKey West
15h 31m
2 stops
SJU11:04 amSan Juan Luis Munoz Marin Intl
$616

momondo Fare Finder

 
Customize your flight search to find flights from Puerto Rico 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 July 14, 2026.
Use the filters below to find and compare flights from Puerto Rico to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Mon 8/24

5:37 pm-12:34 pm

1 stop18h 57m

Key West

Mon 8/31

1:11 pm-12:56 am

1 stop11h 45m

$269

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sun 8/30

5:15 pm-12:31 pm

1 stop19h 16m

Key West

Sat 9/5

3:48 pm-12:56 am

1 stop9h 08m

$281

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sun 8/30

6:35 am-7:13 pm

2 stops12h 38m

Key West

Sat 9/5

3:48 pm-12:56 am

1 stop9h 08m

$321
Quickest round-trip

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Thu 8/27

3:10 am-11:27 am

1 stop8h 17m

Key West

Mon 8/31

1:11 pm-12:56 am

1 stop11h 45m

$323

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Mon 8/24

5:37 pm-12:34 pm

1 stop18h 57m

Key West

Mon 8/31

5:38 pm-12:56 am

2 stops31h 18m

$370

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sat 7/25

5:22 pm-7:13 pm

1 stop25h 51m

Key West

Thu 7/30

11:04 am-12:41 am

1 stop13h 37m

$382

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sat 7/25

5:22 pm-3:27 pm

1 stop22h 05m

Key West

Mon 8/3

12:07 pm-9:43 pm

1 stop9h 36m

$389

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sat 7/25

3:10 am-12:48 pm

1 stop9h 38m

Key West

Thu 7/30

11:04 am-12:41 am

1 stop13h 37m

$398

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sat 7/25

3:10 am-12:48 pm

1 stop9h 38m

Key West

Sun 8/2

12:05 pm-2:15 am

1 stop14h 10m

$399

San JuanKey West

SJU - EYW

SJUEYW

San Juan Luis Munoz Marin Intl

Sat 7/25

3:10 am-12:48 pm

1 stop9h 38m

Key West

Mon 8/3

3:27 pm-11:16 am

1 stop19h 49m

$404

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Puerto Rico 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 Puerto Rico to Key West?

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

Cheap Puerto Rico to Key West flight deals and tips

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

Fastest flight time

18h 51m

Direct flights

None
The fastest flight from Puerto Rico to Key West takes 18h 51m
There are no direct flights from Puerto Rico to Key West. There are no popular flight routes from Puerto Rico to Key West.
Search flight deals

Frequently asked questions about flying from Puerto Rico to Key West

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

    Prices for flights from Puerto Rico to Key West Airport are updated daily.

  • How old do you have to be to fly from Puerto Rico to Key West Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Puerto Rico 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 Puerto Rico to Key West?

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

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

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

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

Once you have performed a search for Puerto Rico to Key West flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Puerto Rico to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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