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$149+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — EYW
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Key West are usually found in August or July, booked 78 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(Delta)

One-way from

$149
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$469
Provider with most accurate pricing for San Francisco-Key West flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Key West flights.
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From San Francisco to Key West
Search Deals
One-way flight from San Francisco to Key West
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 28, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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 12/88:15 amSFO - EYW
1 stop8h 51mDelta
Sat 12/136:10 pmEYW - SFO
1 stop9h 10mDelta
Deal found 10/28$309
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/178:00 amSFO - EYW
1 stop8h 23mAmerican Airlines
Mon 11/244:10 pmEYW - SFO
1 stop9h 49mAmerican Airlines
Deal found 10/27$311
This American Airlines deal was found by Cheapflights users on 10/28. 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 12/811:59 pmSFO - EYW
2 stops10h 04mAmerican Airlines
Sat 12/134:59 pmEYW - SFO
1 stop9h 26mAmerican Airlines
Deal found 10/28$314
This American Airlines deal was found by Cheapflights users on 10/26. 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 12/159:00 amSFO - EYW
1 stop9h 46mAmerican Airlines
Fri 12/192:28 pmEYW - SFO
1 stop9h 34mAmerican Airlines
Deal found 10/26$323
This American Airlines deal was found by Cheapflights users on 10/26. 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.
Thu 11/139:00 amSFO - EYW
1 stop9h 47mAmerican Airlines
Wed 11/191:23 pmEYW - SFO
1 stop11h 45mAmerican Airlines
Deal found 10/26$339
This Delta deal was found by Cheapflights users on 10/27. 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 11/177:15 amSFO - EYW
1 stop7h 08mDelta
Mon 11/246:18 pmEYW - SFO
2 stops16h 12mDelta
Deal found 10/27$388
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 11/117:15 amSFO - EYW
1 stop7h 08mDelta
Sat 11/157:40 amEYW - SFO
1 stop10h 03mDelta
Deal found 10/27$389
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/116:00 amSFO - EYW
2 stops12h 48mAmerican Airlines
Sat 11/154:59 pmEYW - SFO
1 stop9h 26mAmerican Airlines
Deal found 10/27$432

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 October 28, 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

Mon 12/8

8:15 am-8:06 pm

1 stop8h 51m

Key West

Sat 12/13

6:10 pm-12:20 am

1 stop9h 10m

$309

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 12/8

11:59 pm-1:03 pm

2 stops10h 04m

Key West

Sat 12/13

4:59 pm-11:25 pm

1 stop9h 26m

$314

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 1/20

8:00 am-9:47 pm

2 stops10h 47m

Key West

Thu 1/29

6:06 am-1:46 pm

2 stops10h 40m

$319

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 12/15

9:00 am-9:46 pm

1 stop9h 46m

Key West

Fri 12/19

2:28 pm-9:02 pm

1 stop9h 34m

$323

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 1/12

12:17 am-1:03 pm

2 stops9h 46m

Key West

Fri 1/16

2:43 pm-10:41 pm

2 stops10h 58m

$333

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Thu 11/13

9:00 am-9:47 pm

1 stop9h 47m

Key West

Wed 11/19

1:23 pm-10:08 pm

1 stop11h 45m

$339

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 11/17

7:15 am-5:23 pm

1 stop7h 08m

Key West

Mon 11/24

6:18 pm-7:30 am

2 stops16h 12m

$388

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Fri 1/16

1:15 pm-11:05 am

1 stop18h 50m

Key West

Sun 1/18

7:08 am-1:50 pm

1 stop9h 42m

$388

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Fri 12/5

12:25 am-12:05 pm

1 stop8h 40m

$162

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 11/18

5:28 pm-11:20 am

3 stops38h 52m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 17 results
1
2

Compare providers for flights from San Francisco to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Key West in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Key West flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Key West flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Key West flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Key West flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 October 24, 2025.

The best time to book flights from San Francisco to Key West is 36 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 $227). Flying from San Francisco to Key West in September is currently the most expensive (average of $501). 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 October 28, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Key West at noon. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the afternoon.

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 October 28, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

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
7.9
Good
7,994 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

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
9,001 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

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
11,032 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

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.

  • How long is the flight from San Francisco to Key West?

    For as low as $309, Delta can have you in Key West from San Francisco in 8h 51m. The distance from San Francisco to Key West is about 2542 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $256. Other airlines that can offer you cheap pricing are Delta, from $258, and United Airlines, from $287. Users have found that American Airlines is 47% cheaper than the other options available to this destination.

  • 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 $227). Flying from San Francisco to Key West in September is currently the most expensive (average of $501). 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$256Average$442FlexibilityNo cancel feeOn-time71%
DeltaCheapest$258Average$425FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$287Average$617FlexibilityNo cancel feeOn-time69%

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