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Cheap flights from San Francisco to Key West from $188

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 9/11. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Francisco to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:33 am - 7:33 pmSFO  San Francisco-EYW Key West
8h 00m1 stop Miami
American Airlines Logo
5:28 pm - 11:59 pmEYW  Key West-SFO San Francisco
9h 31m1 stop Miami
$301American Airlines
Wed, Oct 14 - Sat, Oct 17
American Airlines Logo
6:47 am - 4:54 pmSFO  San Francisco-EYW Key West
7h 07m1 stop Dallas/Fort Worth
American Airlines Logo
2:26 pm - 7:23 pmEYW  Key West-SFO San Francisco
7h 57m1 stop Dallas/Fort Worth
$301American Airlines
Tue, Oct 27 - Wed, Nov 4
American Airlines Logo
9:00 am - 9:47 pmSFO  San Francisco-EYW Key West
9h 47m1 stop Charlotte Douglas
American Airlines Logo
7:08 am - 1:50 pmEYW  Key West-SFO San Francisco
9h 42m1 stop Charlotte Douglas
$301American Airlines
Sat, Jan 30 - Sat, Feb 6
Delta Logo
6:00 am - 5:23 pmSFO  San Francisco-EYW Key West
8h 23m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:19 pm - 11:57 pmEYW  Key West-SFO San Francisco
8h 38m1 stop Atlanta Hartsfield-Jackson
$340Delta
Fri, Sep 11 - Tue, Sep 15
Delta Logo
11:59 pm - 10:48 amSFO  San Francisco-EYW Key West
7h 49m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:02 pm - 11:51 pmEYW  Key West-SFO San Francisco
8h 49m1 stop Atlanta Hartsfield-Jackson
$370Delta
Tue, Dec 8 - Mon, Dec 14
Delta Logo
9:30 pm - 10:47 amSFO  San Francisco-EYW Key West
10h 17m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:11 pm - 11:56 pmEYW  Key West-SFO San Francisco
8h 45m1 stop Atlanta Hartsfield-Jackson
$379Delta
Thu, Oct 29 - Mon, Nov 2
United Airlines Logo
10:45 pm - 11:11 amSFO  San Francisco-EYW Key West
9h 26m1 stop Chicago O'Hare Intl
United Airlines Logo
4:05 pm - 11:00 pmEYW  Key West-SFO San Francisco
9h 55m1 stop Chicago O'Hare Intl
$450United Airlines
Sat, Jan 9 - Wed, Jan 13
United Airlines Logo
10:45 pm - 11:11 amSFO  San Francisco-EYW Key West
9h 26m1 stop Chicago O'Hare Intl
United Airlines Logo
6:20 pm - 1:16 amEYW  Key West-SFO San Francisco
9h 56m1 stop Washington, D.C. Dulles Intl
$450United Airlines
Sat, Jan 9 - Wed, Jan 13
Multiple Airlines Logo
12:46 pm - 10:30 amSFO  San Francisco-EYW Key West
18h 44m1 stop Cincinnati Cinci./N. Kentucky
Multiple Airlines Logo
11:09 am - 10:29 amEYW  Key West-SFO San Francisco
26h 20m2 stops Knoxville McGhee Tyson Las Vegas Harry Reid Intl
$468Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Multiple Airlines Logo
12:46 pm - 10:36 amSFO  San Francisco-EYW Key West
18h 50m1 stop Cincinnati Cinci./N. Kentucky
Multiple Airlines Logo
11:54 am - 2:50 pmEYW  Key West-SFO San Francisco
29h 56m2 stops Knoxville McGhee Tyson Las Vegas Harry Reid Intl
$502Multiple Airlines
Thu, Nov 5 - Mon, Nov 9

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American Airlines flights from San Francisco to Key West

Our best American Airlines deals on San Francisco to Key West flight tickets
American Airlines
Oct 14
SFO8:33 amSan Francisco
8h 00m
1 stop
EYW7:33 pmKey West
Oct 17
EYW5:28 pmKey West
9h 31m
1 stop
SFO11:59 pmSan Francisco
$301
American Airlines
Oct 14
SFO5:30 amSan Francisco
11h 03m
2 stops
EYW7:33 pmKey West
Oct 17
EYW5:28 pmKey West
9h 31m
1 stop
SFO11:59 pmSan Francisco
$388
American Airlines
Aug 25
SFO9:35 pmSan Francisco
9h 09m
1 stop
EYW9:44 amKey West
Aug 29
EYW7:10 pmKey West
8h 44m
1 stop
SFO12:54 amSan Francisco
$401

Delta flights from San Francisco to Key West

Our best Delta deals on San Francisco to Key West flight tickets
Delta
Sep 11
SFO6:00 amSan Francisco
8h 23m
1 stop
EYW5:23 pmKey West
Sep 15
EYW6:19 pmKey West
8h 38m
1 stop
SFO11:57 pmSan Francisco
$340
Delta
Oct 29
SFO9:30 pmSan Francisco
10h 17m
1 stop
EYW10:47 amKey West
Nov 2
EYW6:11 pmKey West
8h 45m
1 stop
SFO11:56 pmSan Francisco
$379
Delta
Aug 17
SFO11:15 pmSan Francisco
8h 35m
1 stop
EYW10:50 amKey West
Aug 22
EYW4:00 pmKey West
10h 58m
1 stop
SFO11:58 pmSan Francisco
$480

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 August 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 San Francisco - EYW Key West

SFOEYW

San Francisco

Wed 10/14

8:33 am-7:33 pm

1 stop8h 00m

Key West

Sat 10/17

5:28 pm-11:59 pm

1 stop9h 31m

$301
Quickest round-trip

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Tue 10/27

6:47 am-4:54 pm

1 stop7h 07m

Key West

Wed 11/4

2:26 pm-7:23 pm

1 stop7h 57m

$301

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Sat 1/30

9:00 am-9:47 pm

1 stop9h 47m

Key West

Sat 2/6

7:08 am-1:50 pm

1 stop9h 42m

$301

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Fri 9/11

6:00 am-5:23 pm

1 stop8h 23m

Key West

Tue 9/15

6:19 pm-11:57 pm

1 stop8h 38m

$340

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Tue 12/8

11:59 pm-10:48 am

1 stop7h 49m

Key West

Mon 12/14

6:02 pm-11:51 pm

1 stop8h 49m

$370

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Thu 10/29

9:30 pm-10:47 am

1 stop10h 17m

Key West

Mon 11/2

6:11 pm-11:56 pm

1 stop8h 45m

$379

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Sat 1/9

10:45 pm-11:11 am

1 stop9h 26m

Key West

Wed 1/13

4:05 pm-11:00 pm

1 stop9h 55m

$450

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Sat 1/9

10:45 pm-11:11 am

1 stop9h 26m

Key West

Wed 1/13

6:20 pm-1:16 am

1 stop9h 56m

$450

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Thu 10/29

12:46 pm-10:30 am

1 stop18h 44m

Key West

Mon 11/2

11:09 am-10:29 am

2 stops26h 20m

$468

San FranciscoKey West

SFO San Francisco - EYW Key West

SFOEYW

San Francisco

Thu 11/5

12:46 pm-10:36 am

1 stop18h 50m

Key West

Mon 11/9

11:54 am-2:50 pm

2 stops29h 56m

$502

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 cheapest month to fly to Key West?

In general, January 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 $423. If you are unable to visit Key West during the month of January, then departing from San Francisco during the month October is also very affordable. Most momondo users find prices during this month for around $438.

How far in advance should I book a flight from San Francisco 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 $597 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 $329 on momondo.

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

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

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 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
DeltaPriceFrom $258Free CancellationRating
7.8
8,505 reviews
Search Delta flights
American AirlinesPriceFrom $304Free CancellationRating
7.1
11,902 reviews
Search American Airlines flights
United AirlinesPriceFrom $390Free CancellationRating
7.4
10,101 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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