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$40+ Cheap flights from Key Largo, FL 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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SJU
Nov 10 — Nov 171
Sun 11/10
Sun 11/17
1 adult, Economy
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Find flight deals from Key Largo to Puerto Rico

Cheapest flights from Key Largo to Puerto Rico
Explore the most affordable flight options available from Key Largo to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2024.

This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/193:21 pmMIA - SJU
Nonstop2h 33mSpirit Airlines
Thu 11/214:25 pmSJU - MIA
Nonstop2h 51mSpirit Airlines
Deal found 11/4$72
This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/147:45 amMIA - SJU
Nonstop2h 38mFrontier
Tue 11/197:25 pmSJU - MIA
Nonstop2h 53mFrontier
Deal found 11/4$82
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/2111:47 amMIA - SJU
Nonstop2h 33mMultiple Airlines
Thu 11/289:35 pmSJU - MIA
Nonstop2h 52mMultiple Airlines
Deal found 11/3$91
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/167:00 amMIA - CPX
2 stops28h 11mMultiple Airlines
Mon 11/188:20 amCPX - MIA
1 stop14h 30mMultiple Airlines
Deal found 11/3$353
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/187:00 amMIA - VQS
2 stops24h 25mMultiple Airlines
Mon 11/257:00 amVQS - MIA
1 stop12h 16mMultiple Airlines
Deal found 11/4$406
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/41:55 pmMIA - BQN
1 stop9h 02mUnited Airlines
Tue 12/101:09 amBQN - MIA
1 stop9h 03mUnited Airlines
Deal found 11/4$434
This JetBlue deal was found by Cheapflights users on 11/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/44:30 pmMIA - BQN
1 stop7h 39mJetBlue
Wed 12/115:01 amBQN - MIA
1 stop11h 36mJetBlue
Deal found 11/4$450
This United deal was found by Cheapflights users on 11/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/116:28 amMIA - MAZ
2 stops25h 46mMultiple Airlines
Wed 12/185:00 pmMAZ - MIA
2 stops25h 53mMultiple Airlines
Deal found 11/3$746
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/56:28 amMIA - VQS
2 stops10h 32mUnited Airlines
Thu 12/1211:58 amVQS - MIA
3 stops33h 05mUnited Airlines
Deal found 11/5$3,041

Find flights from Key Largo to Puerto Rico within your budget

Customize your flight search to find flights from Key Largo 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 2,554,862 searches. Data last updated November 5, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Thu 11/14

3:21 pm-6:54 pm

Nonstop2h 33m

$40

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Mon 11/11

5:45 am-9:24 am

Nonstop2h 39m

$41

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Tue 12/3

6:15 am-3:15 pm

2 stops32h 00m

$121

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Sat 5/3

6:00 am-4:29 pm

1 stop10h 29m

$122

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Mon 4/14

8:30 am-11:00 am

Nonstop2h 30m

$133

MiamiAguadilla

MIA - BQN

MIABQN

Miami

Sat 2/1

3:02 pm-11:57 pm

1 stop7h 55m

$312

MiamiAguadilla

MIA - BQN

MIABQN

Miami

Tue 12/24

1:38 pm-1:12 am

1 stop10h 34m

$392

MiamiMayagüez

MIA - MAZ

MIAMAZ

Miami

Sun 11/10

6:30 am-1:27 pm

2 stops29h 57m

$376

MiamiVieques

MIA - VQS

MIAVQS

Miami

Tue 11/26

6:30 am-8:25 am

2 stops24h 55m

$487

MiamiMayagüez

MIA - MAZ

MIAMAZ

Miami

Sat 2/1

9:00 am-3:49 pm

2 stops29h 49m

$1,070

Flights are sorted by cheapest first

Deals found on 11/4

Showing 1-10 of 21 results
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Best time to book a flight from Key Largo to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Key Largo with our price prediction graph.
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.

Travel insights for flights from Key Largo to Puerto Rico

Get recent, data-driven insights about flights from Key Largo to Puerto Rico including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Key Largo to Puerto Rico?

Currently, September is the cheapest month in which you can book a flight from Key Largo to Puerto Rico (average of $254). Flying from Key Largo to Puerto Rico in March is currently the most expensive (average of $335). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KE9 to PR?

Find hourly flight availability from Key Largo to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2024.

When flying from Key Largo to Puerto Rico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Puerto Rico ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit Puerto Rico when rainfall is around 2.2 in.

Temperature in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Puerto Rico, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 November 5, 2024.
Peruse reviews from past customers who have flown with Spirit Airlines and United Airlines from Key Largo to Puerto Rico to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,830 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
8,830 reviews
Delta
8.0
Very good
8,830 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

JetBlue
7.5
Good
3,486 reviews
Delta
8.0
Very good
8,830 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

United Airlines
7.4
Good
9,215 reviews
Delta
8.0
Very good
8,830 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,830 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Spirit Airlines
6.3
Okay
8,178 reviews
Delta
8.0
Very good
8,830 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Key Largo to Puerto Rico for under $100 on Cheapflights?

    Yes, there are multiple flights from Key Largo to Puerto Rico for under $100. The cheapest flight booked recently is on Spirit Airlines for just $72, but on average you can expect to pay $586.

  • Are there nonstop flights from Key Largo to Puerto Rico for under $100 on Cheapflights?

    Cheapflights has at least 4 direct flights from Key Largo to Puerto Rico under $100. A good price for a nonstop flight from Key Largo to Puerto Rico is less than $117.

  • Are there last-minute flights available from Key Largo to Puerto Rico for under $100?

    There are currently 5+ open flights from Key Largo to Puerto Rico within the next 7 days for less than $100.

  • What are the cheapest airlines to fly from Key Largo to Puerto Rico one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $40. However, be on the lookout for offers from Frontier and Delta, as they are both options that can get you from Key Largo to Puerto Rico for a low price.

  • What are the most popular routes from Key Largo to Puerto Rico?

    Most travelers choose Miami - San Juan Luis Munoz Marin Intl, Miami - Aguadilla Borinquen or Miami - Culebra when deciding on the best route from Key Largo to Puerto Rico.

  • What are the most reliable airlines from Key Largo to Puerto Rico?

    Consider Envoy Air (100%), Frontier (91%) or Spirit Airlines (89%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Puerto Rico.

  • What are the cheapest flights from Key Largo to Puerto Rico?

    The cheapest flight price from Key Largo to Puerto Rico is $45. On average you can expect to pay $433. The most popular route, (Miami - San Juan Luis Munoz Marin Intl), can usually be booked for $67.

  • What does MIA to SJU mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Miami Airport to San Juan Luis Munoz Marin Intl Airport flight would often be abbreviated as a MIA to SJU flight. Aguadilla Borinquen Airport (BQN), Ponce Mercedita Airport (PSE), San Juan Isla Grande Airport (SIG), Culebra Airport (CPX), Vieques Airport (VQS) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Key Largo to Puerto Rico that include extra baggage allowance?

    The amount of baggage you can bring on your Key Largo to Puerto Rico flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Key Largo to Puerto Rico with specific airlines?

    Yes, Cheapflights allows you to browse and filter Key Largo to Puerto Rico flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Key Largo to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Key Largo to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Puerto Rico.

  • Can I find deals for business class flights from Key Largo to Puerto Rico?

    Yes. Cheapflights offers flight deals from Key Largo to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Key Largo to Puerto Rico that allow pets onboard?

    Many airlines flying from Key Largo to Puerto Rico offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Key Largo to Puerto Rico?

    Yes, you can often find last-minute deals on Key Largo to Puerto Rico flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Key Largo to Puerto Rico flight deals updated?

    The Key Largo to Puerto Rico flight deals you see on this page were last updated on 11/5.

  • What is the cheapest month to book a flight from Key Largo to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Key Largo to Puerto Rico (average of $254). Flying from Key Largo to Puerto Rico in March is currently the most expensive (average of $335). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Key Largo to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Key Largo to Puerto Rico

Discover the top 7 airlines that operate flights from Key Largo 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 2,554,862 searches. Data last updated November 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$141FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$82Average$165FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$110Average$310FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$155Average$225FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$214Average$412FlexibilityNo cancel feeOn-time71%
DeltaCheapest$261Average$366FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$341Average$594FlexibilityNo cancel feeOn-time69%
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