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$145+ Cheap flights from San Francisco to Key West (SFO - EYW)

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — EYW
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Key West are usually found in August or September, booked 50 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from San Francisco to Key West

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Key West (EYW). 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 July 30, 2025.

Round-trip from

$269
(American Airlines)

One-way from

$145
(Delta)

Popular in

June

Cheapest in

August

Average price

$383
From San Francisco to Key West
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One-way flight from San Francisco to Key West
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from San Francisco to Key West

Cheapest flights from San Francisco to Key West
Explore the most affordable flight options available from San Francisco to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This JetBlue deal was found by Cheapflights users on 7/28. 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.
Sun 12/79:16 pmSFO - EYW
1 stop11h 39mJetBlue
Fri 12/1212:40 pmEYW - SFO
1 stop14h 48mJetBlue
Deal found 7/28$259
This Delta deal was found by Cheapflights users on 7/28. 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.
Mon 12/89:30 pmSFO - EYW
1 stop10h 29mDelta
Fri 12/126:00 pmEYW - SFO
1 stop9h 16mDelta
Deal found 7/28$269
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Mon 12/812:27 amSFO - EYW
1 stop7h 55mAmerican Airlines
Wed 12/173:55 pmEYW - SFO
2 stops9h 34mAmerican Airlines
Deal found 7/28$274
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Tue 8/1210:45 pmSFO - EYW
1 stop11h 27mUnited Airlines
Sat 8/162:08 pmEYW - SFO
2 stops22h 11mUnited Airlines
Deal found 7/28$733

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Key West 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 July 30, 2025.
Use the filters below to find and compare flights from San Francisco to Key West that are best for you.

Fly from

San Francisco

Fly to

Key West

Route

Depart

Return

Price

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sat 9/20

11:52 pm-12:05 pm

1 stop9h 13m

Key West

Thu 9/25

2:55 pm-10:48 pm

1 stop10h 53m

$269

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 9/9

7:29 am-8:12 pm

1 stop9h 43m

Key West

Sat 9/13

7:00 am-11:43 am

1 stop7h 43m

$314

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 8/12

10:45 pm-1:12 pm

1 stop11h 27m

Key West

Sat 8/16

2:08 pm-9:19 am

2 stops22h 11m

$733

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sat 9/20

12:39 pm-11:52 am

3 stops44h 13m

Key West

Thu 9/25

8:55 am-11:54 am

3 stops53h 59m

$890

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 8/26

6:15 am-5:25 pm

1 stop8h 10m

$145

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 8/26

5:45 am-7:07 pm

2 stops10h 22m

$150

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 8/12

12:33 pm-9:22 am

3 stops41h 49m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from San Francisco to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West 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 West

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Key West. Price data was last updated on July 25, 2025.

The best time to book flights from San Francisco to Key West is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from San Francisco to Key West (average of $328). Flying from San Francisco to Key West in March is currently the most expensive (average of $492). 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 EYW?

Find hourly flight availability from San Francisco to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Key West in the morning. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. 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 West. Reviews last updated July 30, 2025.
Get a feel of what it's like to fly with Delta, Breeze Airways, and United Airlines from San Francisco to Key West by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Breeze Airways
8.0
Very good
191 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

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

  • What are the cheapest airlines flying from San Francisco to Key West round-trip?

    Cheapflights users have booked flights from San Francisco to Key West round-trip from $269. Other airlines that can offer you cheap pricing are Delta, from $314, and United Airlines, from $733. Users have found that American Airlines is 43% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $145 on Delta. Other airlines that offer cheap prices include American Airlines from $150 and Breeze Airways from $491 one-way.

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

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

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

    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 West.

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

    Yes. Cheapflights offers flight deals from San Francisco to Key West 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 West?

    Currently, August is the cheapest month in which you can book a flight from San Francisco to Key West (average of $328). Flying from San Francisco to Key West in March is currently the most expensive (average of $492). 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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Top 3 airlines flying from San Francisco to Key West

Discover the top 3 airlines that operate flights from San Francisco to Key West. 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$256Average$435FlexibilityNo cancel feeOn-time71%
DeltaCheapest$268Average$496FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$287Average$619FlexibilityNo cancel feeOn-time69%

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