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Cheap flights from Key West to Puerto Rico from $207

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 10/30. 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

Discover deals from 900+ travel sites with momondo.

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
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
Multiple Airlines Logo
5:22 pm - 1:54 pm
SJU
-
EYW
20h 32m
1 stop
$330Multiple Airlines
Thu, Jul 16 - Fri, Jul 31
Multiple Airlines Logo
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
Multiple Airlines Logo
5:22 pm - 11:06 am
SJU
-
EYW
17h 44m
1 stop
$338Multiple Airlines
Thu, Aug 6 - Tue, Aug 11
Multiple Airlines Logo
11:46 am - 12:41 am
EYW
-
SJU
12h 55m
1 stop
Multiple Airlines Logo
5:22 pm - 11:06 am
SJU
-
EYW
17h 44m
1 stop
$349Multiple Airlines
Wed, Aug 5 - Tue, Aug 11
Multiple Airlines Logo
1:14 pm - 12:41 am
EYW
-
SJU
11h 27m
1 stop
Multiple Airlines Logo
5:22 pm - 11:06 am
SJU
-
EYW
17h 44m
1 stop
$360Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
Multiple Airlines Logo
3:10 am - 11:27 am
SJU
-
EYW
8h 17m
1 stop
$369Multiple Airlines
Thu, Aug 6 - Thu, Aug 6
Multiple Airlines Logo
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
Multiple Airlines Logo
8:37 pm - 11:27 am
SJU
-
EYW
14h 50m
1 stop
$373Multiple Airlines
Thu, Aug 6 - Sun, Aug 9
Multiple Airlines Logo
11:04 am - 12:41 am
EYW
-
SJU
13h 37m
1 stop
Multiple Airlines Logo
3:36 pm - 12:31 pm
SJU
-
EYW
20h 55m
2 stops
$378Multiple Airlines
Thu, Jul 16 - Sun, Jul 19
Multiple Airlines Logo
11:46 am - 12:41 am
EYW
-
SJU
12h 55m
1 stop
Multiple Airlines Logo
3:10 am - 11:27 am
SJU
-
EYW
8h 17m
1 stop
$380Multiple Airlines
Wed, Aug 5 - Thu, Aug 6
Multiple Airlines Logo
11:46 am - 12:41 am
EYW
-
SJU
12h 55m
1 stop
Multiple Airlines Logo
8:37 pm - 11:27 am
SJU
-
EYW
14h 50m
1 stop
$384Multiple Airlines
Wed, Aug 5 - Sun, Aug 9
Multiple Airlines Logo
8:48 pm - 12:23 am
EYW
-
SJU
27h 35m
2 stops
Multiple Airlines Logo
5:22 pm - 1:54 pm
SJU
-
EYW
20h 32m
1 stop
$387Multiple Airlines
Thu, Jul 16 - Fri, Jul 31

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Delta flights from Key West to Puerto Rico

Our best Delta deals on Key West to Puerto Rico flight tickets
Delta
Aug 6
EYW11:48 amKey West
10h 41m
1 stop
SJU10:29 pmSan Juan Luis Munoz Marin Intl
Aug 8
SJU12:56 pmSan Juan Luis Munoz Marin Intl
7h 01m
1 stop
EYW7:57 pmKey West
$516
Delta
Aug 4
EYW7:40 amKey West
8h 58m
1 stop
SJU4:38 pmSan Juan Luis Munoz Marin Intl
Aug 8
SJU12:56 pmSan Juan Luis Munoz Marin Intl
7h 01m
1 stop
EYW7:57 pmKey West
$521
Delta
Aug 3
EYW7:40 amKey West
8h 58m
1 stop
SJU4:38 pmSan Juan Luis Munoz Marin Intl
Aug 8
SJU12:56 pmSan Juan Luis Munoz Marin Intl
7h 01m
1 stop
EYW7:57 pmKey West
$591

United Airlines flights from Key West to Puerto Rico

Our best United Airlines deals on Key West to Puerto Rico flight tickets
United Airlines
Aug 5
EYW4:00 pmKey West
28h 38m
2 stops
SJU8:38 pmSan Juan Luis Munoz Marin Intl
Aug 7
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 30m
1 stop
EYW1:30 pmKey West
$777
United Airlines
Aug 28
EYW2:20 pmKey West
9h 30m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Aug 30
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 29m
1 stop
EYW1:29 pmKey West
$872
United Airlines
Aug 28
EYW2:20 pmKey West
9h 30m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Aug 30
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 29m
1 stop
EYW1:29 pmKey West
$882

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 June 17, 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

Cheapest round-trip

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 7/16

11:04 am-12:41 am

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Fri 7/31

5:22 pm-1:54 pm

1 stop20h 32m

$330

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/6

11:04 am-12:41 am

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Tue 8/11

5:22 pm-11:06 am

1 stop17h 44m

$338

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 8/5

11:46 am-12:41 am

1 stop12h 55m

San Juan Luis Munoz Marin Intl

Tue 8/11

5:22 pm-11:06 am

1 stop17h 44m

$349

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Tue 8/4

1:14 pm-12:41 am

1 stop11h 27m

San Juan Luis Munoz Marin Intl

Tue 8/11

5:22 pm-11:06 am

1 stop17h 44m

$360

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/6

11:04 am-12:41 am

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Thu 8/6

3:10 am-11:27 am

1 stop8h 17m

$369

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/6

11:04 am-12:41 am

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Sun 8/9

8:37 pm-11:27 am

1 stop14h 50m

$373

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 7/16

11:04 am-12:41 am

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Sun 7/19

3:36 pm-12:31 pm

2 stops20h 55m

$378
Quickest round-trip

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 8/5

11:46 am-12:41 am

1 stop12h 55m

San Juan Luis Munoz Marin Intl

Thu 8/6

3:10 am-11:27 am

1 stop8h 17m

$380

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 8/5

11:46 am-12:41 am

1 stop12h 55m

San Juan Luis Munoz Marin Intl

Sun 8/9

8:37 pm-11:27 am

1 stop14h 50m

$384

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 7/16

8:48 pm-12:23 am

2 stops27h 35m

San Juan Luis Munoz Marin Intl

Fri 7/31

5:22 pm-1:54 pm

1 stop20h 32m

$387

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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 30m

Direct flights

None
The fastest flight from Key West to Puerto Rico takes 9h 30m
There are no direct flights from Key West to Puerto Rico. There are no popular flight routes from Key West to Puerto Rico.
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Frequently asked questions about flying from Key West to Puerto Rico

  • 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
11,670 reviews
Search American Airlines flights

Frequently asked questions about flying from Key West to Puerto Rico

  • How do I get Price Alerts for flights from Key West to Puerto Rico?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Key West from Puerto Rico. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Key West to Puerto Rico with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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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Fri 7/17
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