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Key Largo

$117+ Cheap flights from San Francisco (SFO) 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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — MIA
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Key Largo are usually found in September or January, booked 47 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from San Francisco to Key Largo

Keep the following information in mind while searching for San Francisco to Key Largo flight deals. Data was last updated marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(American Airlines)

One-way from

$119
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$412
Provider with most accurate pricing for San Francisco-Miami flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Miami flights.
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From San Francisco to Key Largo
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One-way flight from San Francisco to Key Largo
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from San Francisco to Key Largo

Cheapest flights from San Francisco to Key Largo
Explore the most affordable flight options available from San Francisco to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 25, 2025.

This American Airlines deal was found by Cheapflights users on 3/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/1311:37 pmSFO - MIA
Nonstop5h 23mAmerican Airlines
mar. 4/227:34 amMIA - SFO
Nonstop6h 17mAmerican Airlines
Deal found 3/23$234
This United Airlines deal was found by Cheapflights users on 3/24. 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.
sáb. 8/211:00 pmSFO - MIA
Nonstop5h 37mUnited Airlines
dom. 8/108:45 amMIA - SFO
Nonstop6h 03mUnited Airlines
Deal found 3/24$240
This Southwest deal was found by Cheapflights users on 3/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/148:00 amSFO - MIA
2 stops11h 00mSouthwest
mié. 4/168:30 amMIA - SFO
1 stop9h 40mSouthwest
Deal found 3/23$253
This Delta deal was found by Cheapflights users on 3/24. 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.
dom. 4/2010:45 pmSFO - MIA
1 stop7h 35mDelta
mar. 4/2910:25 amMIA - SFO
1 stop10h 42mDelta
Deal found 3/24$256
This Trip.com deal was found by Cheapflights users on 3/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/308:33 amSFO - MIA
Nonstop5h 25mMultiple Airlines
jue. 1/228:30 amMIA - SFO
1 stop13h 05mMultiple Airlines
Deal found 3/23$265
This Gotogate deal was found by Cheapflights users on 3/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/112:08 amSFO - MIA
1 stop11h 49mFrontier
jue. 4/1710:48 amMIA - SFO
1 stop15h 01mFrontier
Deal found 3/24$296
This Sun Country Air deal was found by Cheapflights users on 3/23. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/186:20 pmSFO - MIA
1 stop20h 55mSun Country Air
sáb. 7/2612:10 pmMIA - SFO
1 stop22h 58mSun Country Air
Deal found 3/23$325

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco 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 marzo 25, 2025.
Use the filters below to find and compare flights from San Francisco to Key Largo that are best for you.

Fly from

San Francisco

Fly to

Key Largo

Route

Depart

Return

Price

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

dom. 4/13

11:37 pm-8:00 am

Nonstop5h 23m

Miami

mar. 4/22

7:34 am-10:51 am

Nonstop6h 17m

$234

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

dom. 4/6

10:45 pm-7:28 am

Nonstop5h 43m

Miami

vie. 4/18

8:30 am-12:01 pm

Nonstop6h 31m

$238

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

lun. 4/14

8:00 am-10:00 pm

2 stops11h 00m

Miami

mié. 4/16

8:30 am-3:10 pm

1 stop9h 40m

$253

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

dom. 4/20

10:45 pm-9:20 am

1 stop7h 35m

Miami

mar. 4/29

10:25 am-6:07 pm

1 stop10h 42m

$256

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

jue. 5/8

6:00 am-11:13 pm

1 stop14h 13m

Miami

mié. 5/14

11:11 am-9:48 pm

1 stop13h 37m

$292

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

sáb. 4/5

11:59 pm-12:39 pm

1 stop9h 40m

Miami

mar. 4/15

10:36 am-10:47 pm

1 stop15h 11m

$298

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

vie. 4/18

6:20 pm-6:15 pm

1 stop20h 55m

Miami

sáb. 7/26

12:10 pm-8:08 am

1 stop22h 58m

$325

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

lun. 4/28

8:09 pm-5:01 pm

1 stop17h 52m

Miami

mar. 5/6

6:01 pm-9:32 am

2 stops18h 31m

$345

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

dom. 5/4

6:09 pm-6:48 pm

2 stops21h 39m

Miami

dom. 5/11

12:00 pm-5:13 pm

1 stop32h 13m

$371

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

mié. 7/16

8:55 am-5:28 pm

Nonstop5h 33m

$117

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 17 results
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Best time to book a flight from San Francisco to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from San Francisco 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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Key Largo

How far ahead should I book a flight from San Francisco to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Key Largo. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to Key Largo, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Francisco to Key Largo?

Currently, September is the cheapest month in which you can book a flight from San Francisco to Key Largo (average of $229). Flying from San Francisco 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 SFO to KE9?

Find hourly flight availability from San Francisco 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 marzo 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Key Largo as you normally would.

What is the cheapest day to fly from San Francisco to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Key Largo flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to Key Largo

Explore weekly flight availability from San Francisco 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 marzo 25, 2025.

The most flights from SFO to KE9 are scheduled on a Thursday (25 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 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 marzo 25, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from San Francisco to Key Largo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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

  • What airport do you fly from for flights from San Francisco to Key Largo?

    If you book a flight to Key Largo from San Francisco, you will be flying from San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 23 flights from San Francisco to Key Largo per day from 9 different airlines.

  • How popular is this San Francisco to Key Largo flight route?

    Within the past month, 37 users have taken a look at flights from San Francisco to Key Largo.

  • What are the cheapest airlines to fly from San Francisco to Key Largo one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $119. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from San Francisco to Key Largo for a low price.

  • What are the most reliable airlines from San Francisco to Key Largo?

    Before booking your flight to Key Largo from San Francisco, check out the most reliable airlines to get you to your destination on time: China Southern (97%), Fiji Airways (96%), Copa Airlines( 96%).

  • What are the cheapest flights from San Francisco to Key Largo?

    While on average a flight from San Francisco to Key Largo is generally $1,049, our data shows the cheapest flight currently is $104. When looking at the most popular route, (San Francisco - Miami), you can expect to pay $179 for that flight.

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

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

  • How can I find direct flights from San Francisco to Key Largo?

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

  • Can I find deals for business class flights from San Francisco to Key Largo?

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

  • What is the cheapest month to book a flight from San Francisco to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from San Francisco to Key Largo (average of $229). Flying from San Francisco 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.

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Top 9 airlines flying from San Francisco to Key Largo

Discover the top 9 airlines that operate flights from San Francisco 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$292FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$99Average$358FlexibilityNo cancel feeOn-time62%
FrontierCheapest$128Average$256FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$381FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$143Average$398FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$447FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$192Average$392FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$217Average$471FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$296Average$585FlexibilityNo cancel feeOn-time63%
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