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Cheap flights from San Francisco to Key West from $239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Key West departing on 5/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from San Francisco to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 5:23 pm
SFO
-
EYW
8h 23m
1 stop
Delta Logo
6:15 pm - 11:54 pm
EYW
-
SFO
8h 39m
1 stop
$291Delta
Tue, Jul 21 - Tue, Aug 4
American Airlines Logo
5:51 am - 6:27 pm
SFO
-
EYW
9h 36m
2 stops
American Airlines Logo
3:00 pm - 10:40 pm
EYW
-
SFO
10h 40m
1 stop
$296American Airlines
Tue, Sep 22 - Wed, Sep 30
Delta Logo
7:53 am - 7:54 pm
SFO
-
EYW
9h 01m
1 stop
Delta Logo
6:15 pm - 11:54 pm
EYW
-
SFO
8h 39m
1 stop
$301Delta
Tue, Aug 4 - Tue, Aug 11
Delta Logo
6:00 am - 5:14 pm
SFO
-
EYW
8h 14m
1 stop
Delta Logo
2:35 pm - 10:39 pm
EYW
-
SFO
11h 04m
1 stop
$325Delta
Tue, Sep 22 - Wed, Sep 30
American Airlines Logo
7:30 am - 7:39 pm
SFO
-
EYW
9h 09m
1 stop
American Airlines Logo
8:09 pm - 12:51 am
EYW
-
SFO
7h 42m
1 stop
$330American Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
10:34 pm - 11:21 am
SFO
-
EYW
9h 47m
1 stop
American Airlines Logo
5:15 pm - 10:40 pm
EYW
-
SFO
8h 25m
1 stop
$335American Airlines
Tue, Sep 22 - Wed, Sep 30
Delta Logo
6:00 am - 5:20 pm
SFO
-
EYW
8h 20m
1 stop
Delta Logo
6:15 pm - 11:54 pm
EYW
-
SFO
8h 39m
1 stop
$340Delta
Mon, Aug 3 - Wed, Aug 12
American Airlines Logo
5:51 am - 6:27 pm
SFO
-
EYW
9h 36m
2 stops
American Airlines Logo
12:05 pm - 8:27 pm
EYW
-
SFO
11h 22m
2 stops
$345American Airlines
Tue, Sep 22 - Wed, Sep 30
Delta Logo
2:40 pm - 10:50 am
SFO
-
EYW
17h 10m
2 stops
Delta Logo
6:15 pm - 11:54 pm
EYW
-
SFO
8h 39m
1 stop
$352Delta
Tue, Aug 4 - Tue, Aug 11
United Airlines Logo
12:50 am - 3:19 pm
SFO
-
EYW
11h 29m
1 stop
United Airlines Logo
4:05 pm - 12:20 am
EYW
-
SFO
11h 15m
1 stop
$355United Airlines
Sat, Aug 8 - Sat, Aug 15

Delta flights from San Francisco to Key West

Our best Delta deals on San Francisco to Key West flight tickets
Delta
Jul 21
SFO6:00 amSan Francisco
8h 23m
1 stop
EYW5:23 pmKey West
Aug 4
EYW6:15 pmKey West
8h 39m
1 stop
SFO11:54 pmSan Francisco
$291
Delta
Aug 4
SFO6:00 amSan Francisco
8h 20m
1 stop
EYW5:20 pmKey West
Aug 12
EYW6:15 pmKey West
8h 39m
1 stop
SFO11:54 pmSan Francisco
$301
Delta
Sep 22
SFO6:00 amSan Francisco
8h 14m
1 stop
EYW5:14 pmKey West
Sep 30
EYW2:35 pmKey West
11h 04m
1 stop
SFO10:39 pmSan Francisco
$325

American Airlines flights from San Francisco to Key West

Our best American Airlines deals on San Francisco to Key West flight tickets
American Airlines
Sep 22
SFO5:51 amSan Francisco
9h 36m
2 stops
EYW6:27 pmKey West
Sep 30
EYW3:00 pmKey West
10h 40m
1 stop
SFO10:40 pmSan Francisco
$296
American Airlines
Sep 2
SFO7:30 amSan Francisco
9h 09m
1 stop
EYW7:39 pmKey West
Sep 6
EYW8:09 pmKey West
7h 42m
1 stop
SFO12:51 amSan Francisco
$330
American Airlines
Sep 22
SFO10:34 pmSan Francisco
9h 47m
1 stop
EYW11:21 amKey West
Sep 30
EYW5:15 pmKey West
8h 25m
1 stop
SFO10:40 pmSan Francisco
$335

momondo 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, momondo users made 832,500 searches. Data last updated May 11, 2026.
Use the filters below to find and compare flights from San Francisco to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 7/21

6:00 am-5:23 pm

1 stop8h 23m

Key West

Tue 8/4

6:15 pm-11:54 pm

1 stop8h 39m

$291

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 9/22

5:51 am-6:27 pm

2 stops9h 36m

Key West

Wed 9/30

3:00 pm-10:40 pm

1 stop10h 40m

$296

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 8/4

7:53 am-7:54 pm

1 stop9h 01m

Key West

Tue 8/11

6:15 pm-11:54 pm

1 stop8h 39m

$301

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 9/22

6:00 am-5:14 pm

1 stop8h 14m

Key West

Wed 9/30

2:35 pm-10:39 pm

1 stop11h 04m

$325
Quickest round-trip

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Wed 9/2

7:30 am-7:39 pm

1 stop9h 09m

Key West

Sun 9/6

8:09 pm-12:51 am

1 stop7h 42m

$330

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 9/22

10:34 pm-11:21 am

1 stop9h 47m

Key West

Wed 9/30

5:15 pm-10:40 pm

1 stop8h 25m

$335

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 8/3

6:00 am-5:20 pm

1 stop8h 20m

Key West

Wed 8/12

6:15 pm-11:54 pm

1 stop8h 39m

$340

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 9/22

5:51 am-6:27 pm

2 stops9h 36m

Key West

Wed 9/30

12:05 pm-8:27 pm

2 stops11h 22m

$345

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 8/4

2:40 pm-10:50 am

2 stops17h 10m

Key West

Tue 8/11

6:15 pm-11:54 pm

1 stop8h 39m

$352

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sat 8/8

12:50 am-3:19 pm

1 stop11h 29m

Key West

Sat 8/15

4:05 pm-12:20 am

1 stop11h 15m

$355

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from San Francisco to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between San Francisco and Key West?

What is the cheapest month to fly to Key West?

In general, July is the cheapest month to fly from San Francisco to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $388. If you are unable to visit Key West during the month of July, then departing from San Francisco during the month January is also very affordable. Most momondo users find prices during this month for around $405.

How have San Francisco to Key West flight prices changed over time?

As of May 2026, prices for San Francisco to Key West flights are approximately 81% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Key West (SFO to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Key West

Fastest flight time

8h 14m

Direct flights

None
The fastest flight from San Francisco to Key West takes 8h 14m
There are no direct flights from San Francisco to Key West. There are no popular flight routes from San Francisco to Key West.
Search flight deals

Frequently asked questions about flying from San Francisco to Key West

  • How far is San Francisco to Key West by plane?

    Key West is 2542.9 mi away from San Francisco. Flights usually cover this in 8h 14m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San Francisco Airport to Key West Airport?

    Prices for flights from San Francisco Airport to Key West Airport are updated daily.

  • How many operators does momondo search for flights from San Francisco Airport to Key West Airport?

  • How old do you have to be to fly from San Francisco Airport to Key West Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The required travel and health documents for your Key West Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Key West Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from San Francisco to Key West?

Best airlines flying from San Francisco to Key West

Compare and see reviews for airlines that fly from San Francisco to Key West with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $258Free CancellationRating
7.9
8,451 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
United AirlinesPriceFrom $391Free CancellationRating
7.4
9,699 reviews
Search United Airlines flights

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Key West?

It is quick and easy to find San Francisco to Key West flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Key West that suits you.

Can I find flights from San Francisco to Key West with flexible booking policies on momondo?

Flights from San Francisco to Key West with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Francisco to Key West?

Once all potential San Francisco to Key West flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Francisco to Key West right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Francisco to Key West flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Key West trip

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