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Cheap flights from San Francisco to Key West from $175

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 4/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:08 am - 10:36 pm
SFO
-
EYW
10h 28m
1 stop
American Airlines Logo
2:01 pm - 9:28 pm
EYW
-
SFO
10h 27m
1 stop
$349American Airlines
Wed, Apr 15 - Wed, Apr 22
American Airlines Logo
9:08 am - 10:36 pm
SFO
-
EYW
10h 28m
1 stop
American Airlines Logo
3:58 pm - 11:15 pm
EYW
-
SFO
10h 17m
2 stops
$354American Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
5:00 am - 3:57 pm
SFO
-
EYW
7h 57m
1 stop
United Airlines Logo
4:38 pm - 11:59 pm
EYW
-
SFO
10h 21m
1 stop
$369United Airlines
Tue, Apr 14 - Tue, Apr 28
United Airlines Logo
5:00 am - 3:57 pm
SFO
-
EYW
7h 57m
1 stop
United Airlines Logo
6:22 pm - 1:17 am
EYW
-
SFO
9h 55m
1 stop
$389United Airlines
Tue, Apr 14 - Tue, Apr 28
Delta Logo
9:35 pm - 10:46 am
SFO
-
EYW
10h 11m
1 stop
Delta Logo
6:23 pm - 11:55 pm
EYW
-
SFO
8h 32m
1 stop
$394Delta
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
8:44 pm - 11:27 am
SFO
-
EYW
11h 43m
1 stop
Multiple Airlines Logo
12:05 pm - 9:04 pm
EYW
-
SFO
11h 59m
2 stops
$399Multiple Airlines
Sun, May 24 - Thu, May 28
Delta Logo
9:55 pm - 10:53 am
SFO
-
EYW
9h 58m
1 stop
Delta Logo
2:00 pm - 8:41 pm
EYW
-
SFO
9h 41m
1 stop
$404Delta
Mon, May 25 - Thu, May 28
Multiple Airlines Logo
5:25 pm - 11:25 am
SFO
-
EYW
15h 00m
2 stops
Multiple Airlines Logo
12:05 pm - 10:41 am
EYW
-
SFO
25h 36m
1 stop
$410Multiple Airlines
Sat, May 23 - Thu, May 28
Delta Logo
11:59 pm - 10:53 am
SFO
-
EYW
7h 54m
1 stop
Delta Logo
6:19 pm - 4:53 pm
EYW
-
SFO
25h 34m
2 stops
$428Delta
Sat, May 23 - Wed, May 27
Multiple Airlines Logo
8:44 pm - 11:27 am
SFO
-
EYW
11h 43m
1 stop
Multiple Airlines Logo
12:07 pm - 9:04 pm
EYW
-
SFO
11h 57m
2 stops
$432Multiple Airlines
Sun, May 24 - Mon, Jun 1

American Airlines flights from San Francisco to Key West

Our best American Airlines deals on San Francisco to Key West flight tickets
American Airlines
Apr 15
SFO9:08 amSan Francisco
10h 28m
1 stop
EYW10:36 pmKey West
Apr 22
EYW2:01 pmKey West
10h 27m
1 stop
SFO9:28 pmSan Francisco
$349
American Airlines
Apr 15
SFO9:08 amSan Francisco
10h 28m
1 stop
EYW10:36 pmKey West
Apr 22
EYW3:58 pmKey West
10h 17m
2 stops
SFO11:15 pmSan Francisco
$354
American Airlines
Apr 28
SFO9:08 amSan Francisco
9h 45m
1 stop
EYW9:53 pmKey West
May 2
EYW2:01 pmKey West
9h 11m
1 stop
SFO8:12 pmSan Francisco
$447

Delta flights from San Francisco to Key West

Our best Delta deals on San Francisco to Key West flight tickets
Delta
Apr 13
SFO9:35 pmSan Francisco
10h 11m
1 stop
EYW10:46 amKey West
Apr 20
EYW6:23 pmKey West
8h 32m
1 stop
SFO11:55 pmSan Francisco
$394
Delta
May 25
SFO9:55 pmSan Francisco
9h 58m
1 stop
EYW10:53 amKey West
May 28
EYW2:00 pmKey West
9h 41m
1 stop
SFO8:41 pmSan Francisco
$404
Delta
May 23
SFO11:59 pmSan Francisco
7h 54m
1 stop
EYW10:53 amKey West
May 27
EYW6:19 pmKey West
25h 34m
2 stops
SFO4:53 pmSan Francisco
$428

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 March 23, 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

Wed 4/15

9:08 am-10:36 pm

1 stop10h 28m

Key West

Wed 4/22

2:01 pm-9:28 pm

1 stop10h 27m

$349

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Wed 4/15

9:08 am-10:36 pm

1 stop10h 28m

Key West

Wed 4/22

3:58 pm-11:15 pm

2 stops10h 17m

$354

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 4/14

5:00 am-3:57 pm

1 stop7h 57m

Key West

Tue 4/28

4:38 pm-11:59 pm

1 stop10h 21m

$369
Quickest round-trip

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Tue 4/14

5:00 am-3:57 pm

1 stop7h 57m

Key West

Tue 4/28

6:22 pm-1:17 am

1 stop9h 55m

$389

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 4/13

9:35 pm-10:46 am

1 stop10h 11m

Key West

Mon 4/20

6:23 pm-11:55 pm

1 stop8h 32m

$394

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sun 5/24

8:44 pm-11:27 am

1 stop11h 43m

Key West

Thu 5/28

12:05 pm-9:04 pm

2 stops11h 59m

$399

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Mon 5/25

9:55 pm-10:53 am

1 stop9h 58m

Key West

Thu 5/28

2:00 pm-8:41 pm

1 stop9h 41m

$404

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sat 5/23

5:25 pm-11:25 am

2 stops15h 00m

Key West

Thu 5/28

12:05 pm-10:41 am

1 stop25h 36m

$410

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sat 5/23

11:59 pm-10:53 am

1 stop7h 54m

Key West

Wed 5/27

6:19 pm-4:53 pm

2 stops25h 34m

$428

San FranciscoKey West

SFO - EYW

SFOEYW

San Francisco

Sun 5/24

8:44 pm-11:27 am

1 stop11h 43m

Key West

Mon 6/1

12:07 pm-9:04 pm

2 stops11h 57m

$432

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, August 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 $296. If you are unable to visit Key West during the month of August, then departing from San Francisco during the month May is also very affordable. Most momondo users find prices during this month for around $353.

How far in advance should I book a flight to Key West?

You are more likely to see cheaper flights to Key West from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $520 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from San Francisco for as low as $227 on momondo.

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

As of March 2026, prices for San Francisco to Key West flights are approximately 32% cheaper 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

7h 49m

Direct flights

None
The fastest flight from San Francisco to Key West takes 7h 49m
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

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

    Key West is 2543.6 mi away from San Francisco. Flights usually cover this in 7h 49m, 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
American AirlinesPriceFrom $257Free CancellationRating
7.1
11,489 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,319 reviews
Search Delta flights
United AirlinesPriceFrom $391Free CancellationRating
7.4
9,460 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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Wed 4/22
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