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Cheap flights from Key West to Puerto Rico from $205

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 Puerto Rico departing on 4/1. 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 Key West to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:33 pm - 10:10 am
EYW
-
SJU
18h 37m
1 stop
Multiple Airlines Logo
8:57 am - 10:21 am
SJU
-
EYW
25h 24m
1 stop
$332Multiple Airlines
Sat, Mar 28 - Sat, Apr 4
Multiple Airlines Logo
3:33 pm - 10:10 am
EYW
-
SJU
18h 37m
1 stop
Multiple Airlines Logo
6:00 am - 9:06 am
SJU
-
EYW
27h 06m
2 stops
$349Multiple Airlines
Sat, Mar 28 - Sat, Apr 4
Multiple Airlines Logo
11:04 am - 12:47 am
EYW
-
SJU
13h 43m
2 stops
Multiple Airlines Logo
10:50 am - 11:25 am
SJU
-
EYW
24h 35m
1 stop
$367Multiple Airlines
Thu, Aug 13 - Wed, Aug 19
Multiple Airlines Logo
11:51 am - 12:02 am
EYW
-
SJU
12h 11m
1 stop
Multiple Airlines Logo
8:47 pm - 3:42 pm
SJU
-
EYW
18h 55m
1 stop
$370Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
10:33 pm - 6:55 pm
EYW
-
SJU
44h 22m
2 stops
Multiple Airlines Logo
8:57 am - 10:21 am
SJU
-
EYW
25h 24m
1 stop
$395Multiple Airlines
Sun, Mar 15 - Sat, Apr 4
American Airlines Logo
11:26 am - 11:40 pm
EYW
-
SJU
12h 14m
1 stop
American Airlines Logo
12:00 pm - 6:39 pm
SJU
-
EYW
6h 39m
1 stop
$396American Airlines
Thu, Aug 6 - Wed, Aug 12
Multiple Airlines Logo
1:01 pm - 11:10 am
EYW
-
SJU
22h 09m
1 stop
Multiple Airlines Logo
7:54 pm - 3:42 pm
SJU
-
EYW
19h 48m
2 stops
$402Multiple Airlines
Tue, Mar 17 - Sat, Mar 21
American Airlines Logo
3:00 pm - 10:56 pm
EYW
-
SJU
7h 56m
1 stop
American Airlines Logo
10:32 am - 6:39 pm
SJU
-
EYW
8h 07m
1 stop
$406American Airlines
Thu, Aug 13 - Wed, Aug 19
Multiple Airlines Logo
9:46 am - 8:53 am
EYW
-
SJU
23h 07m
1 stop
Multiple Airlines Logo
8:57 am - 10:21 am
SJU
-
EYW
25h 24m
1 stop
$415Multiple Airlines
Sun, Mar 15 - Sat, Apr 4
Multiple Airlines Logo
1:01 pm - 11:10 am
EYW
-
SJU
22h 09m
1 stop
Multiple Airlines Logo
7:54 pm - 11:30 am
SJU
-
EYW
15h 36m
1 stop
$422Multiple Airlines
Tue, Mar 17 - Sat, Mar 21

United Airlines flights from Key West to Puerto Rico

Our best United Airlines deals on Key West to Puerto Rico flight tickets
United Airlines
May 9
EYW2:49 pmKey West
9h 01m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
May 13
SJU7:00 amSan Juan Luis Munoz Marin Intl
9h 02m
1 stop
EYW4:02 pmKey West
$855
United Airlines
May 5
EYW2:39 pmKey West
9h 11m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
May 6
SJU4:55 pmSan Juan Luis Munoz Marin Intl
20h 50m
2 stops
EYW1:45 pmKey West
$887
United Airlines
May 5
EYW2:39 pmKey West
9h 11m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
May 6
SJU7:00 amSan Juan Luis Munoz Marin Intl
9h 02m
1 stop
EYW4:02 pmKey West
$889

American Airlines flights from Key West to Puerto Rico

Our best American Airlines deals on Key West to Puerto Rico flight tickets
American Airlines
Aug 6
EYW11:26 amKey West
12h 14m
1 stop
SJU11:40 pmSan Juan Luis Munoz Marin Intl
Aug 12
SJU12:00 pmSan Juan Luis Munoz Marin Intl
6h 39m
1 stop
EYW6:39 pmKey West
$396
American Airlines
Aug 13
EYW3:00 pmKey West
7h 56m
1 stop
SJU10:56 pmSan Juan Luis Munoz Marin Intl
Aug 19
SJU10:32 amSan Juan Luis Munoz Marin Intl
8h 07m
1 stop
EYW6:39 pmKey West
$406
American Airlines
Mar 25
EYW7:42 pmKey West
15h 14m
1 stop
SJU10:56 amSan Juan Luis Munoz Marin Intl
Mar 27
SJU6:00 amSan Juan Luis Munoz Marin Intl
13h 12m
1 stop
EYW7:12 pmKey West
$476

momondo Fare Finder

 
Customize your flight search to find flights from Key West to Puerto Rico 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 March 2, 2026.
Use the filters below to find and compare flights from Key West to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Sat 3/28

3:33 pm-10:10 am

1 stop18h 37m

San Juan Luis Munoz Marin Intl

Sat 4/4

8:57 am-10:21 am

1 stop25h 24m

$332

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Sat 3/28

3:33 pm-10:10 am

1 stop18h 37m

San Juan Luis Munoz Marin Intl

Sat 4/4

6:00 am-9:06 am

2 stops27h 06m

$349

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/13

11:04 am-12:47 am

2 stops13h 43m

San Juan Luis Munoz Marin Intl

Wed 8/19

10:50 am-11:25 am

1 stop24h 35m

$367

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 4/1

11:51 am-12:02 am

1 stop12h 11m

San Juan Luis Munoz Marin Intl

Wed 4/8

8:47 pm-3:42 pm

1 stop18h 55m

$370

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Sun 3/15

10:33 pm-6:55 pm

2 stops44h 22m

San Juan Luis Munoz Marin Intl

Sat 4/4

8:57 am-10:21 am

1 stop25h 24m

$395

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/6

11:26 am-11:40 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Wed 8/12

12:00 pm-6:39 pm

1 stop6h 39m

$396

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Tue 3/17

1:01 pm-11:10 am

1 stop22h 09m

San Juan Luis Munoz Marin Intl

Sat 3/21

7:54 pm-3:42 pm

2 stops19h 48m

$402

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/13

3:00 pm-10:56 pm

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Wed 8/19

10:32 am-6:39 pm

1 stop8h 07m

$406

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Sun 3/15

9:46 am-8:53 am

1 stop23h 07m

San Juan Luis Munoz Marin Intl

Sat 4/4

8:57 am-10:21 am

1 stop25h 24m

$415

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Tue 3/17

1:01 pm-11:10 am

1 stop22h 09m

San Juan Luis Munoz Marin Intl

Sat 3/21

7:54 pm-11:30 am

1 stop15h 36m

$422

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Puerto Rico from

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

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 Puerto Rico?

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

Cheap Key West to Puerto Rico flight deals and tips

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

Fastest flight time

9h 01m

Direct flights

None
The fastest flight from Key West to Puerto Rico takes 9h 01m
There are no direct flights from Key West to Puerto Rico. There are no popular flight routes from Key West to Puerto Rico.
Search flight deals

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

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

  • How many operators does momondo search for flights from Key West Airport to Puerto Rico?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Key West Airport to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The travel and health documents required for your trip to Puerto Rico 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 Puerto Rico. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Key West to Puerto Rico

Compare and see reviews for airlines that fly from Key West to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $390Free CancellationRating
7.1
11,375 reviews
Search American Airlines flights

Why use momondo?

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

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 Puerto Rico from Key West.

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

All flight searches from Key West to Puerto Rico on momondo can be filtered to show those which offer flexible booking policies.

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

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 Puerto Rico.

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

If you are not ready to book a flight from Key West to Puerto Rico now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Puerto Rico and let you know when they change.

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