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Cheap flights from Key West to Puerto Rico from $170

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 5/24. 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
1:01 pm - 7:22 pm
EYW
-
SJU
30h 21m
2 stops
Multiple Airlines Logo
4:11 pm - 10:21 am
SJU
-
EYW
18h 10m
1 stop
$338Multiple Airlines
ג', אפר' 28 - ש', מאי 2
Multiple Airlines Logo
1:14 pm - 12:37 am
EYW
-
SJU
11h 23m
1 stop
Multiple Airlines Logo
5:15 pm - 4:17 pm
SJU
-
EYW
23h 02m
1 stop
$364Multiple Airlines
ג', יוני 16 - ג', יוני 23
Multiple Airlines Logo
1:57 pm - 10:18 am
EYW
-
SJU
20h 21m
1 stop
Multiple Airlines Logo
8:04 pm - 3:46 pm
SJU
-
EYW
19h 42m
2 stops
$366Multiple Airlines
א', מאי 17 - א', מאי 31
Multiple Airlines Logo
1:57 pm - 10:18 am
EYW
-
SJU
20h 21m
1 stop
Multiple Airlines Logo
8:32 am - 1:24 pm
SJU
-
EYW
28h 52m
2 stops
$371Multiple Airlines
א', מאי 17 - ד', מאי 27
Multiple Airlines Logo
1:14 pm - 12:37 am
EYW
-
SJU
11h 23m
1 stop
Multiple Airlines Logo
5:15 pm - 10:24 am
SJU
-
EYW
41h 09m
2 stops
$377Multiple Airlines
ג', יוני 16 - ג', יוני 23
Multiple Airlines Logo
1:01 pm - 9:05 am
EYW
-
SJU
20h 04m
1 stop
Multiple Airlines Logo
4:11 pm - 10:21 am
SJU
-
EYW
18h 10m
1 stop
$411Multiple Airlines
ג', אפר' 28 - ש', מאי 2
Multiple Airlines Logo
1:14 pm - 4:01 am
EYW
-
SJU
14h 47m
2 stops
Multiple Airlines Logo
5:15 pm - 11:06 am
SJU
-
EYW
17h 51m
1 stop
$413Multiple Airlines
ג', יוני 2 - ג', יוני 23
Multiple Airlines Logo
1:57 pm - 10:18 am
EYW
-
SJU
20h 21m
1 stop
Multiple Airlines Logo
2:59 am - 11:25 am
SJU
-
EYW
8h 26m
1 stop
$422Multiple Airlines
א', מאי 17 - ש', מאי 30
Delta Logo
11:58 am - 10:27 pm
EYW
-
SJU
10h 29m
1 stop
Delta Logo
6:00 am - 5:29 pm
SJU
-
EYW
11h 29m
1 stop
$436Delta
ב', יוני 15 - ו', יוני 19
Multiple Airlines Logo
1:57 pm - 10:18 am
EYW
-
SJU
20h 21m
1 stop
Multiple Airlines Logo
12:00 pm - 3:20 pm
SJU
-
EYW
27h 20m
1 stop
$438Multiple Airlines
א', מאי 17 - ד', מאי 27

United Airlines flights from Key West to Puerto Rico

Our best United Airlines deals on Key West to Puerto Rico flight tickets
United Airlines
Apr 19
EYW6:22 pmKey West
18h 12m
1 stop
SJU12:34 pmSan Juan Luis Munoz Marin Intl
Apr 23
SJU7:20 amSan Juan Luis Munoz Marin Intl
9h 22m
1 stop
EYW4:42 pmKey West
$926
United Airlines
Apr 19
EYW2:35 pmKey West
9h 15m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Apr 23
SJU7:20 amSan Juan Luis Munoz Marin Intl
9h 22m
1 stop
EYW4:42 pmKey West
$938
United Airlines
Apr 19
EYW2:35 pmKey West
9h 15m
1 stop
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Apr 23
SJU7:20 amSan Juan Luis Munoz Marin Intl
9h 22m
1 stop
EYW4:42 pmKey West
$958

American Airlines flights from Key West to Puerto Rico

Our best American Airlines deals on Key West to Puerto Rico flight tickets
American Airlines
Sep 2
EYW1:49 pmKey West
4h 35m
1 stop
SJU6:24 pmSan Juan Luis Munoz Marin Intl
Sep 6
SJU6:00 amSan Juan Luis Munoz Marin Intl
13h 39m
1 stop
EYW7:39 pmKey West
$441
American Airlines
Jun 15
EYW7:29 pmKey West
14h 10m
2 stops
SJU9:39 amSan Juan Luis Munoz Marin Intl
Jun 19
SJU6:00 amSan Juan Luis Munoz Marin Intl
13h 10m
1 stop
EYW7:10 pmKey West
$491
American Airlines
Sep 2
EYW4:50 pmKey West
7h 09m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Sep 6
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 44m
2 stops
EYW6:44 pmKey West
$496

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 אפריל 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

ג' 4/28

1:01 pm-7:22 pm

2 stops30h 21m

San Juan Luis Munoz Marin Intl

ש' 5/2

4:11 pm-10:21 am

1 stop18h 10m

$338

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

ג' 6/16

1:14 pm-12:37 am

1 stop11h 23m

San Juan Luis Munoz Marin Intl

ג' 6/23

5:15 pm-4:17 pm

1 stop23h 02m

$364

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

א' 5/17

1:57 pm-10:18 am

1 stop20h 21m

San Juan Luis Munoz Marin Intl

א' 5/31

8:04 pm-3:46 pm

2 stops19h 42m

$366

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

א' 5/17

1:57 pm-10:18 am

1 stop20h 21m

San Juan Luis Munoz Marin Intl

ד' 5/27

8:32 am-1:24 pm

2 stops28h 52m

$371

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

ג' 6/16

1:14 pm-12:37 am

1 stop11h 23m

San Juan Luis Munoz Marin Intl

ג' 6/23

5:15 pm-10:24 am

2 stops41h 09m

$377

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

ג' 4/28

1:01 pm-9:05 am

1 stop20h 04m

San Juan Luis Munoz Marin Intl

ש' 5/2

4:11 pm-10:21 am

1 stop18h 10m

$411

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

ג' 6/2

1:14 pm-4:01 am

2 stops14h 47m

San Juan Luis Munoz Marin Intl

ג' 6/23

5:15 pm-11:06 am

1 stop17h 51m

$413

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

א' 5/17

1:57 pm-10:18 am

1 stop20h 21m

San Juan Luis Munoz Marin Intl

ש' 5/30

2:59 am-11:25 am

1 stop8h 26m

$422
Quickest round-trip

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

ב' 6/15

11:58 am-10:27 pm

1 stop10h 29m

San Juan Luis Munoz Marin Intl

ו' 6/19

6:00 am-5:29 pm

1 stop11h 29m

$436

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

א' 5/17

1:57 pm-10:18 am

1 stop20h 21m

San Juan Luis Munoz Marin Intl

ד' 5/27

12:00 pm-3:20 pm

1 stop27h 20m

$438

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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?

United Airlines and American Airlines are the most popular carriers 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 35m

Direct flights

None
The fastest flight from Key West to Puerto Rico takes 9h 35m
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

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
11,593 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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1 adult
א' 5/17
א' 5/24
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