$225+ Cheap flights from Key West (EYW) to Puerto Rico
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SJU
Jun 24 — Jul 11
Round-trip
1 adult, Economy
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Find cheap flights from Key West to Puerto Rico with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Key West to Puerto Rico
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Cheapest flights from Key West to Puerto RicoExplore the most affordable flight options available from Key West to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 25, 2026.
Explore the most affordable flight options available from Key West to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/31:11 pm
EYW
- SJU
1 stop11h 26m
Multiple Airlines
Wed 7/85:15 pm
SJU
- EYW
2 stops19h 33m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1011:46 am
EYW
- SJU
1 stop12h 51m
Multiple Airlines
Sat 6/139:37 pm
SJU
- EYW
2 stops13h 48m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$430
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:28 am
EYW
- SJU
1 stop6h 56m
American Airlines
Mon 7/206:00 am
SJU
- EYW
1 stop13h 06m
American Airlines
Deal found 5/21![American Airlines logo]()
$446
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:30 am
EYW
- SJU
1 stop10h 25m
American Airlines
Sun 9/61:38 pm
SJU
- EYW
1 stop6h 01m
American Airlines
Deal found 5/25![American Airlines logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1812:05 pm
EYW
- SJU
1 stop14h 04m
Multiple Airlines
Sun 6/218:00 am
SJU
- EYW
2 stops27h 27m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/101:11 pm
EYW
- SJU
1 stop11h 30m
Multiple Airlines
Mon 7/206:00 am
SJU
- EYW
2 stops30h 34m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$502
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2611:28 am
EYW
- SJU
1 stop10h 30m
American Airlines
Sun 6/286:01 am
SJU
- EYW
1 stop7h 06m
American Airlines
Deal found 5/21![American Airlines logo]()
$536
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:55 pm
EYW
- SJU
1 stop13h 50m
American Airlines
Sat 7/257:14 pm
SJU
- EYW
1 stop23h 52m
American Airlines
Deal found 5/21![American Airlines logo]()
$539
Best flights from Key West to Puerto RicoDiscover carefully curated flight deals from Key West to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 25, 2026.
Discover carefully curated flight deals from Key West to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1011:46 am
EYW
- SJU
1 stop12h 51m
Multiple Airlines
Sat 6/139:37 pm
SJU
- EYW
2 stops13h 48m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$430
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:30 am
EYW
- SJU
1 stop10h 25m
American Airlines
Sun 9/61:38 pm
SJU
- EYW
1 stop6h 01m
American Airlines
Deal found 5/25![American Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:20 pm
EYW
- SJU
1 stop9h 30m
United Airlines
Wed 8/262:55 pm
SJU
- EYW
1 stop22h 34m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,002
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/101:11 pm
EYW
- SJU
1 stop11h 30m
Multiple Airlines
Mon 7/206:00 am
SJU
- EYW
2 stops30h 34m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$502
Last-minute flights from Key West to Puerto RicoDiscover last-minute flight deals from Key West to Puerto Rico. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from Key West to Puerto Rico. Data last updated May 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1011:46 am
EYW
- SJU
1 stop12h 51m
Multiple Airlines
Sat 6/139:37 pm
SJU
- EYW
2 stops13h 48m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$430
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/102:26 pm
EYW
- SJU
2 stops46h 08m
United Airlines
Sat 6/134:55 pm
SJU
- EYW
2 stops22h 14m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,120
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1812:05 pm
EYW
- SJU
1 stop14h 04m
Multiple Airlines
Sun 6/218:00 am
SJU
- EYW
2 stops27h 27m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$480
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/182:26 pm
EYW
- SJU
2 stops30h 58m
United Airlines
Sat 6/202:05 am
SJU
- EYW
2 stops37h 04m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,311
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2611:28 am
EYW
- SJU
1 stop10h 30m
American Airlines
Sun 6/286:01 am
SJU
- EYW
1 stop7h 06m
American Airlines
Deal found 5/21![American Airlines logo]()
$536
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/267:29 pm
EYW
- SJU
2 stops15h 33m
American Airlines
Mon 6/296:01 am
SJU
- EYW
1 stop7h 06m
American Airlines
Deal found 5/21![American Airlines logo]()
$761
One-way flights from Key West to Puerto RicoSearch for one-way flight options from Key West to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
Search for one-way flight options from Key West to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/512:07 pm
EYW
- SJU
1 stop25h 08m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:07 pm
EYW
- SJU
1 stop14h 04m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3112:05 pm
EYW
- SJU
1 stop19h 59m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$324
Find flight deals from Key West to Puerto Rico
Keep the following information in mind while searching for Key West to Puerto Rico flight deals. Data was last updated May 25, 2026.
Round-trip from | $402 (Kiwi.com) |
|---|---|
One-way from | $225 (Kiwi.com) |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 25, 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
Cheapest round-trip
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Wed 6/10
11:46 am-12:37 am
1 stop12h 51m
San Juan Luis Munoz Marin Intl
Sat 6/13
9:37 pm-11:25 am
2 stops13h 48m
$430
Quickest round-trip
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Wed 9/2
11:30 am-9:55 pm
1 stop10h 25m
San Juan Luis Munoz Marin Intl
Sun 9/6
1:38 pm-7:39 pm
1 stop6h 01m
$451
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Fri 7/10
1:11 pm-12:41 am
1 stop11h 30m
San Juan Luis Munoz Marin Intl
Mon 7/20
6:00 am-12:34 pm
2 stops30h 34m
$502
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Tue 8/25
2:20 pm-11:50 pm
1 stop9h 30m
San Juan Luis Munoz Marin Intl
Wed 8/26
2:55 pm-1:29 pm
1 stop22h 34m
$1,002
Cheapest one-way
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Fri 6/5
12:07 pm-11:59 pm
2 stops35h 52m
$238
Quickest one-way
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Mon 6/1
12:07 pm-2:11 am
1 stop14h 04m
$296
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Sun 5/31
4:10 pm-2:33 pm
3 stops22h 23m
$624
Sorted by cheapest first
Best time to book a flight from Key West to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Key West with our price prediction graph.
EYW-SJU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Key West to Puerto Rico
EYW-PR0
EYW-SJU
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Puerto Rico
Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated May 25, 2026.
Read through reviews of airlines operating flights from Key West to Puerto Rico, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.9
Comfort
7.2
Food
6.4
Boarding
7.5
Overall
7.1
Crew
7.9
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Entertainment
6.9
Comfort
7.2
Food
6.4
Boarding
7.5
Overall
7.1
Crew
7.9
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Related info for your journey
Find useful and relevant information for your journey from Key West to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Key West to Puerto Rico
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Key West to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Key West and Puerto Rico flights
Browse other Key West and Puerto Rico flight options. Last updated on May 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Key West to Puerto Rico flights
Consider these flights traveling from Key West to Puerto Rico.
Top airline flying from Key West to Puerto Rico
Discover the top airline that operate flights from Key West to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$390 | Average$519 | FlexibilityNo cancel fee | On-time71% |