$95+ Cheap flights from San Diego (SAN) to Key Largo, FL
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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Diego to Key Largo 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 San Diego to Key Largo are usually found in September or August, booked 21 days in advance, depart on a Tuesday or Thursday and return on a Wednesday
Cheap flight deals from San Diego to Key Largo
Keep the following information in mind while searching for San Diego to Key Largo flight deals. Data was last updated April 15, 2025.
Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $191 (CheapOair) |
One-way from | $129 (Delta) |
Popular in | December |
Cheapest in | September |
Average price | $409 |
Find flight deals from San Diego to Key Largo
Cheapest flights from San Diego to Key LargoExplore the most affordable flight options available from San Diego to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.
Explore the most affordable flight options available from San Diego to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.
This CheapOair deal was found by Cheapflights users on 4/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/15. 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.
This Booking.com deal was found by Cheapflights users on 4/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/14. 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.
This American Airlines deal was found by Cheapflights users on 4/14. 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.
This Southwest deal was found by Cheapflights users on 4/14. 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 Alaska Airlines deal was found by Cheapflights users on 4/14. 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 Alaska 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 San Diego to Key Largo 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 15, 2025.
Use the filters below to find and compare flights from San Diego to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Mon 5/19
8:08 am-5:43 am
3 stops42h 35m
Miami
Wed 5/21
10:29 am-11:56 pm
2 stops16h 27m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Fri 5/23
7:19 pm-6:30 am
1 stop8h 11m
Miami
Sun 5/25
7:10 am-6:26 pm
1 stop14h 16m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Wed 5/14
6:25 am-5:22 am
1 stop19h 57m
Miami
Mon 7/14
4:51 pm-7:28 am
1 stop17h 37m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Fri 5/30
6:15 am-5:55 pm
1 stop8h 40m
Miami
Thu 6/5
8:40 am-2:25 pm
1 stop8h 45m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Tue 5/27
8:30 pm-11:04 am
2 stops11h 34m
Miami
Sat 5/31
6:26 am-1:10 pm
1 stop9h 44m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Wed 5/28
10:25 pm-6:12 am
Nonstop4h 47m
Miami
Sat 5/31
8:15 pm-10:37 pm
Nonstop5h 22m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Sat 9/6
8:15 am-9:25 pm
2 stops10h 10m
Miami
Sat 9/13
5:50 am-10:15 am
1 stop7h 25m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Wed 5/28
10:25 pm-6:12 am
Nonstop4h 47m
Miami
Sat 5/31
5:18 am-10:12 am
1 stop7h 54m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Tue 4/29
1:10 pm-5:21 am
1 stop13h 11m
San DiegoMiami
SAN - MIA
SANMIA
San Diego
Wed 6/4
6:15 am-6:25 pm
1 stop9h 10m
Best time to book a flight from San Diego to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from San Diego with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from San Diego to Key Largo
How far ahead should I book a flight from San Diego to Key Largo?
Use this chart to determine the optimal time to book a round-trip flight from San Diego to Key Largo. Price data was last updated on April 11, 2025.
Booking 21 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Diego to Key Largo?
Currently, September is the cheapest month in which you can book a flight from San Diego to Key Largo (average of $229). Flying from San Diego to Key Largo in March is currently the most expensive (average of $289). 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 SAN to KE9?
Find hourly flight availability from San Diego to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 15, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Key Largo as you normally would.
What is the cheapest day to fly from San Diego to Key Largo?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Key Largo. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their San Diego to Key Largo flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from San Diego to Key Largo
Explore weekly flight availability from San Diego to Key Largo. 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 15, 2025.
The most flights from SAN to KE9 are scheduled on a Tuesday (7 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).
Rainfall in Key Largo by month
Plan your trip to Key Largo by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.
Temperature in Key Largo by month
Plan your trip to Key Largo by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated April 15, 2025.
To help decide which airline to fly from San Diego to Key Largo, see what other customers have to say about Alaska Airlines, Southwest and Delta. 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
Crew
Overall
Comfort
Entertainment
Food
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Crew
Overall
Comfort
Entertainment
Food
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Crew
Overall
Comfort
Entertainment
Food
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Crew
Overall
Comfort
Entertainment
Food
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Crew
Overall
Comfort
Entertainment
Food
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Crew
Overall
Comfort
Entertainment
Food
Reviews
Cheri,Jan 2025
FAT - SEA
Related info for your journey
Find useful and relevant information for your journey from San Diego to Key Largo. 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 San Diego to Key Largo
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from San Diego to Key Largo
Discover the top 9 airlines that operate flights from San Diego to Key Largo. 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 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$210 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$123 | Average$370 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$130 | Average$232 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$202 | Average$455 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$234 | Average$521 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$385 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$239 | Average$411 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$261 | Average$556 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$267 | Average$388 | FlexibilityNo cancel fee | On-time85% |