$47+ Cheap flights from Key Largo, FL to San Juan
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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Key Largo to San Juan 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Key Largo to San Juan are usually found in September or October, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Friday
Cheap flight deals from Key Largo to San Juan
Keep the following information in mind while searching for Key Largo to San Juan flight deals. Data was last updated April 17, 2025.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $104 (eDestinos) |
One-way from | $52 (eDestinos) |
Popular in | December |
Cheapest in | September |
Average price | $166 |
Find flight deals from Key Largo to San Juan
Cheapest flights from Key Largo to San JuanExplore the most affordable flight options available from Key Largo to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
Explore the most affordable flight options available from Key Largo to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
This eDestinos deal was found by Cheapflights users on 4/16. 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.
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from Key Largo to San Juan 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 April 17, 2025.
Use the filters below to find and compare flights from Key Largo to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sun 5/4
7:25 am-10:00 am
Nonstop2h 35m
San Juan Luis Munoz Marin Intl
Fri 5/9
9:30 pm-12:26 am
Nonstop2h 56m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 5/6
11:05 am-7:40 pm
1 stop8h 35m
San Juan Luis Munoz Marin Intl
Sat 5/10
9:30 pm-12:26 am
Nonstop2h 56m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Mon 4/28
6:00 am-8:26 am
Nonstop2h 26m
San Juan Luis Munoz Marin Intl
Tue 4/29
5:10 pm-8:03 pm
Nonstop2h 53m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sat 5/17
5:50 am-6:50 pm
1 stop13h 00m
San Juan Luis Munoz Marin Intl
Sat 5/24
5:25 am-4:00 pm
2 stops10h 35m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 5/20
8:15 am-10:53 am
Nonstop2h 38m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Mon 4/28
6:00 am-8:26 am
Nonstop2h 26m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sat 5/3
2:49 pm-5:14 pm
Nonstop2h 25m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Thu 5/15
11:55 am-11:30 pm
1 stop11h 35m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 5/13
2:30 pm-1:49 am
1 stop11h 19m
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 6/17
3:10 pm-11:54 pm
1 stop8h 44m
Best time to book a flight from Key Largo to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Key Largo with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Key Largo to San Juan
How far ahead should I book a flight from Key Largo to San Juan?
Use this chart to determine the optimal time to book a round-trip flight from Key Largo to San Juan. Price data was last updated on April 11, 2025.
The price you pay for your flight from Key Largo to San Juan may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Key Largo to San Juan?
Currently, September is the cheapest month in which you can book a flight from Key Largo to San Juan (average of $254). Flying from Key Largo to San Juan in December is currently the most expensive (average of $336). 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 SJU?
Find hourly flight availability from Key Largo to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.
When flying from Key Largo to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What is the cheapest day to fly from Key Largo to San Juan?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to San Juan. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Key Largo to San Juan flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Key Largo to San Juan
Explore weekly flight availability from Key Largo to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 17, 2025.
The most flights from KE9 to PR1 are scheduled on a Thursday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (14 on average).
Rainfall in San Juan by month
Plan your trip to San Juan by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Juan 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 San Juan when rainfall is around 2.2 in.
Temperature in San Juan by month
Plan your trip to San Juan by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Juan, 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 San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated April 17, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Key Largo to San Juan have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Related info for your journey
Find useful and relevant information for your journey from Key Largo to San Juan. 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 Largo to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Key Largo to San Juan
Discover the top 6 airlines that operate flights from Key Largo to San Juan. 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 April 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$47 | Average$150 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$62 | Average$163 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$83 | Average$223 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$160 | Average$306 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$200 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$302 | Average$302 | FlexibilityNo cancel fee | On-timeN/A |