$172 Find Cheap Flights from Key West to Puerto Rico

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Key West to Puerto Rico departing on 4/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Puerto Rico

Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Key West to Puerto Rico Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Key West to Puerto Rico that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Sun, Mar 22 - Wed, Mar 25
Multiple Airlines Logo
12:25 pm - 6:55 pm
EYW
-
SJU
6h 30m
1 stop
Multiple Airlines Logo
12:55 pm - 10:21 am
SJU
-
EYW
21h 26m
2 stops
$314Multiple Airlines
Mon, Mar 23 - Thu, Mar 26
Multiple Airlines Logo
9:49 am - 10:10 am
EYW
-
SJU
24h 21m
1 stop
Multiple Airlines Logo
5:30 am - 3:42 pm
SJU
-
EYW
10h 12m
1 stop
$334Multiple Airlines
Sun, Mar 22 - Tue, Mar 24
Multiple Airlines Logo
12:25 pm - 6:55 pm
EYW
-
SJU
6h 30m
1 stop
Multiple Airlines Logo
1:45 am - 11:11 am
SJU
-
EYW
9h 26m
1 stop
$335Multiple Airlines
Mon, Mar 23 - Thu, Mar 26
Multiple Airlines Logo
9:49 am - 11:10 am
EYW
-
SJU
25h 21m
1 stop
Multiple Airlines Logo
7:54 pm - 1:37 pm
SJU
-
EYW
17h 43m
1 stop
$343Multiple Airlines
Fri, May 15 - Wed, May 20
Multiple Airlines Logo
12:10 pm - 12:29 am
EYW
-
SJU
12h 19m
2 stops
Multiple Airlines Logo
8:27 pm - 11:25 am
SJU
-
EYW
14h 58m
1 stop
$362Multiple Airlines
Fri, Apr 10 - Sat, Apr 11
Multiple Airlines Logo
9:49 am - 10:10 am
EYW
-
SJU
24h 21m
1 stop
Multiple Airlines Logo
1:45 am - 9:06 am
SJU
-
EYW
7h 21m
1 stop
$365Multiple Airlines
Mon, Mar 23 - Thu, Mar 26
Multiple Airlines Logo
9:49 am - 10:10 am
EYW
-
SJU
24h 21m
1 stop
Multiple Airlines Logo
8:47 pm - 1:37 pm
SJU
-
EYW
16h 50m
2 stops
$370Multiple Airlines
Fri, May 15 - Wed, May 20
Multiple Airlines Logo
12:10 pm - 11:24 pm
EYW
-
SJU
11h 14m
1 stop
Multiple Airlines Logo
8:27 pm - 11:25 am
SJU
-
EYW
14h 58m
1 stop
$371Multiple Airlines
Mon, Mar 23 - Thu, Mar 26
Multiple Airlines Logo
9:49 am - 2:29 am
EYW
-
SJU
16h 40m
2 stops
Multiple Airlines Logo
5:30 am - 3:42 pm
SJU
-
EYW
10h 12m
1 stop
$377Multiple Airlines
Thu, Aug 6 - Wed, Aug 12
Multiple Airlines Logo
7:53 pm - 1:30 pm
EYW
-
SJU
17h 37m
1 stop
Multiple Airlines Logo
6:10 am - 10:24 am
SJU
-
EYW
28h 14m
1 stop
$401Multiple Airlines
Booking Insights

KAYAK's insights & trends for Key West to Puerto Rico flights

Get data-powered insights and trends into flights from Key West to Puerto Rico to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Key West to Puerto Rico take?

The duration of a flight to Puerto Rico depends on your arrival airport. The shortest route to Puerto Rico from Key West is to San Juan, which takes 6h 30m.

Find deals

Good to know

Cheapest flight$172
Flight from Key West to San Juan

FAQs - booking Puerto Rico flights

  • How does KAYAK find such low prices on flights from Key West to Puerto Rico?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Key West to Puerto Rico.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Key West to Puerto Rico?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Key West to Puerto Rico is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Key West to Puerto Rico?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Key West to Puerto Rico with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Key West to Puerto Rico?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Key West to Puerto Rico up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Key West to Puerto Rico

 
Need help choosing which airline to fly with from Key West to Puerto Rico? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
American AirlinesOverall score based on 11414 reviews
6.9Entertainment
7.5Boarding
7.2Comfort
6.4Food
7.9Crew
Airline reviews

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

2.0 MediocreTina, Mar 2026
RSW - PHL
Read more American Airlines reviews

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

The flight attendants and the service is getting worse by the day.

Other than nearly three hour delay for maintenance issues, everything went smooth

why would I bother with this airline and pick seats when I am asked to move for a weight imbalance

Overall good. The pilots and flight attendants are excellent! The equipment was the issue on my First flight as they had to wait for a part to be installed. So the take off was at least 30 minutes later.

For my arriving destination, we were delayed multiple times to the point that we arrived 6 hours after we were originally scheduled. On my flight home, they overbooked and involuntarily removed passengers (including me) from the plane. It was not a good experience.

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

Horrible. Got delayed many hours because their pilot wasn't trained for night landing at the airport and a rain delay made it a night landing. We have to wait hours for a qualified crew. They give us 12 dollar meal vouchers but most everything in the airport was closed and definitely more expensive than the vouchers.

I am an AA flyer for a very long time... AA has yet to disappoint.

Everything was good. Flight was very full so crew was busy. After we boarded and plane pulled away from the gate, we were delayed about 40 minutes- sitting on the runway - due to weather en route or at the destination. While weather is not the fault of the airline- it’s terrible to sit on a plane and not moving.

Everything you need to know for your flight from Key West to Puerto Rico

Information on your arrival and departure airports

Key West (EYW)