HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$100+ 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — MIA
Dec 28 — Jan 41
Sat 12/28
Sat 1/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco 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.

The best prices from San Francisco to Key Largo are usually found in January or September, booked 41 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from San Francisco to Key Largo

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Key Largo (KE9). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2024.

Round-trip from

$219
(American Airlines)

One-way from

$100
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$525
From San Francisco to Key Largo
Search Deals
One-way flight from San Francisco to Key Largo
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

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 December 23, 2024.

This eDestinos deal was found by Cheapflights users on 12/22. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 amSFO - MIA
1 stop20h 00mFrontier
Thu 1/96:14 pmMIA - SFO
1 stop21h 36mFrontier
Deal found 12/22$234
This American Airlines deal was found by Cheapflights users on 12/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/311:26 pmSFO - MIA
Nonstop5h 29mAmerican Airlines
Fri 1/107:15 amMIA - SFO
Nonstop6h 31mAmerican Airlines
Deal found 12/22$258
This Delta deal was found by Cheapflights users on 12/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2912:10 amSFO - MIA
1 stop10h 35mDelta
Wed 1/87:50 amMIA - SFO
1 stop9h 53mDelta
Deal found 12/23$266
This eDestinos deal was found by Cheapflights users on 12/21. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 amSFO - MIA
1 stop20h 00mMultiple Airlines
Thu 1/91:10 pmMIA - SFO
2 stops14h 01mMultiple Airlines
Deal found 12/21$304
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3010:42 pmSFO - MIA
Nonstop5h 32mUnited Airlines
Thu 1/96:10 amMIA - SFO
Nonstop6h 34mUnited Airlines
Deal found 12/21$313
This Southwest deal was found by Cheapflights users on 12/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/227:35 pmSFO - MIA
2 stops18h 10mSouthwest
Tue 12/248:00 amMIA - SFO
2 stops11h 55mSouthwest
Deal found 12/22$462
This Cheapflightsfares deal was found by Cheapflights users on 12/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/236:07 pmSFO - MIA
1 stop13h 59mSun Country Air
Tue 12/3111:52 amMIA - SFO
1 stop13h 59mSun Country Air
Deal found 12/22$544

Find flights from San Francisco to Key Largo within your budget

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 December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Sun 2/2

12:23 am-8:52 am

Nonstop5h 29m

Miami

Thu 2/6

7:15 am-10:46 am

Nonstop6h 31m

$219

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Sun 1/12

9:10 pm-1:52 am

1 stop25h 42m

Miami

Sun 2/2

6:00 am-12:44 pm

1 stop9h 44m

$220

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Sun 1/12

11:10 pm-7:43 am

Nonstop5h 33m

Miami

Sun 1/19

6:25 am-12:05 pm

1 stop8h 40m

$223

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Mon 2/10

6:43 pm-6:15 pm

1 stop20h 32m

Miami

Wed 2/12

7:15 pm-8:52 am

1 stop16h 37m

$238

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Thu 2/6

7:40 am-1:54 am

2 stops15h 14m

Miami

Thu 2/13

1:45 pm-7:16 am

2 stops20h 31m

$245

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Mon 1/20

12:40 am-1:49 pm

1 stop10h 09m

Miami

Tue 1/28

11:27 am-8:54 pm

1 stop12h 27m

$256

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Wed 1/15

5:20 am-10:10 pm

2 stops13h 50m

Miami

Sun 1/26

7:00 am-2:35 pm

1 stop10h 35m

$379

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Mon 1/6

1:25 pm-9:54 pm

Nonstop5h 29m

$100

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Wed 1/29

6:55 am-10:59 pm

2 stops13h 04m

$101

San FranciscoMiami

SFO - MIA

SFOMIA

San Francisco

Wed 1/1

7:30 am-4:03 pm

Nonstop5h 33m

$104

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 16 results
1
2

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.

Travel insights for flights from San Francisco to Key Largo

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

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 December 20, 2024.

To ensure you get the cheapest price possible for a flight from San Francisco to Key Largo, you should look to book at least 41 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 $230). 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 December 23, 2024.

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 December 23, 2024.

The most flights from SFO to KE9 are scheduled on a Saturday (36 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 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 December 23, 2024.
Peruse reviews from past customers who have flown with Alaska Airlines, American Airlines and Frontier 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.
Southwest
8.1
Very good
4,780 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,780 reviews
Southwest
8.1
Very good
4,780 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,549 reviews
Southwest
8.1
Very good
4,780 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,588 reviews
Southwest
8.1
Very good
4,780 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,020 reviews
Southwest
8.1
Very good
4,780 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,780 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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 24 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, 50 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 $100. However, be on the lookout for offers from Frontier and United Airlines, 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: United Airlines (98%), Copa Airlines (96%), Virgin Australia( 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 $1,106, our data shows the cheapest flight currently is $115. When looking at the most popular route, (San Francisco - Miami), you can expect to pay $180 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 $230). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Miami flights
Los Angeles to Orlando flights
Los Angeles to Fort Lauderdale flights
San Francisco to Miami flights
San Francisco to Orlando flights
Ontario to Miami flights
San Francisco to Fort Lauderdale flights
Los Angeles to Tampa flights
Burbank to Fort Lauderdale flights
Santa Ana to Fort Lauderdale flights
Ontario to Orlando flights
San Francisco to Tampa flights
Las Vegas to Miami flights
Santa Ana to Miami flights
Las Vegas to Fort Lauderdale flights
San Diego to Miami flights
Burbank to Miami flights
Las Vegas to Orlando flights
San Diego to Orlando flights
San Diego to Fort Lauderdale flights
Ontario to Fort Lauderdale flights
Los Angeles to West Palm Beach flights
Oakland to Fort Lauderdale flights
Sacramento to Miami flights
Santa Ana to Orlando flights
San Jose to Miami flights
Sacramento to Orlando flights
Burbank to Orlando flights
Los Angeles to Fort Myers flights
Oakland to Miami flights
Las Vegas to Tampa flights
Ontario to Tampa flights
San Francisco to Fort Myers flights
San Francisco to West Palm Beach flights
San Jose to Fort Lauderdale flights
San Jose to Orlando flights
Oakland to Orlando flights
San Diego to Tampa flights
Santa Ana to Tampa flights
Sacramento to Tampa flights
Sacramento to Fort Lauderdale flights
Los Angeles to Jacksonville flights
Burbank to Tampa flights
Los Angeles to Sarasota flights
Palm Springs to Miami flights
San Jose to Tampa flights
Ontario to West Palm Beach flights
San Francisco to Jacksonville flights
Sacramento to Fort Myers flights
Reno to Miami flights

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 December 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$79Average$305FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$89Average$326FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$378FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$130Average$402FlexibilityNo cancel feeOn-time71%
FrontierCheapest$132Average$271FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$145Average$262FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$173Average$465FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$192Average$392FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$296Average$619FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.