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Cheap flights from San Diego to Key West from $339

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Key West departing on 1/23. 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 Diego to Key West

Cheap round-trip flights

JetBlue Logo
9:22 pm - 11:22 amSAN-EYW
11h 00m1 stop
JetBlue Logo
12:07 pm - 8:08 pmEYW-SAN
11h 01m1 stop
$339JetBlue
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Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
1:25 pm - 11:59 pmSAN-EYW
7h 34m1 stop
American Airlines Logo
6:31 am - 11:21 amEYW-SAN
7h 50m1 stop
$389American Airlines
Find Deal
Wed, Jan 14 - Tue, Jan 20
JetBlue Logo
9:22 pm - 11:22 amSAN-EYW
11h 00m1 stop
JetBlue Logo
12:07 pm - 8:08 pmEYW-SAN
11h 01m1 stop
$393JetBlue
Find Deal
Thu, Jan 22 - Mon, Jan 26
Multiple Airlines Logo
1:35 pm - 10:07 amSAN-EYW
17h 32m2 stops
Multiple Airlines Logo
11:11 am - 12:36 pmEYW-SAN
28h 25m1 stop
$454Multiple Airlines
Find Deal
Fri, Oct 3 - Mon, Oct 6
Delta Logo
8:00 am - 8:03 pmSAN-EYW
9h 03m1 stop
Delta Logo
6:20 pm - 11:22 pmEYW-SAN
8h 02m1 stop
$457Delta
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Mon, Dec 15 - Tue, Dec 23
Delta Logo
10:30 pm - 10:55 amSAN-EYW
9h 25m1 stop
Delta Logo
6:17 pm - 11:14 pmEYW-SAN
7h 57m1 stop
$465Delta
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Sat, Oct 4 - Tue, Oct 7
Multiple Airlines Logo
1:21 pm - 10:31 amSAN-EYW
18h 10m1 stop
Multiple Airlines Logo
3:30 pm - 8:08 pmEYW-SAN
31h 38m2 stops
$474Multiple Airlines
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Thu, Oct 23 - Sun, Oct 26
United Airlines Logo
5:54 pm - 12:46 pmSAN-EYW
15h 52m2 stops
United Airlines Logo
4:53 pm - 7:30 amEYW-SAN
17h 37m2 stops
$558United Airlines
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Sat, Feb 28 - Sat, Mar 7
United Airlines Logo
8:08 pm - 2:29 pmSAN-EYW
15h 21m2 stops
United Airlines Logo
3:12 pm - 3:59 pmEYW-SAN
27h 47m2 stops
$562United Airlines
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Mon, Sep 29 - Fri, Oct 3
Alaska Airlines Logo
2:11 pm - 12:04 pmSAN-EYW
18h 53m3 stops
Alaska Airlines Logo
11:26 am - 12:10 amEYW-SAN
15h 44m2 stops
$803Alaska Airlines
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Thu, Nov 20 - Mon, Nov 24

United Airlines flights from San Diego to Key West

Our best United Airlines deals on San Diego to Key West flight tickets
United Airlines
Feb 28
SAN5:54 pmSan Diego
15h 52m
2 stops
EYW12:46 pmKey West
Mar 7
EYW4:53 pmKey West
17h 37m
2 stops
SAN7:30 amSan Diego
$558
Find similar
United Airlines
Sep 29
SAN8:08 pmSan Diego
15h 21m
2 stops
EYW2:29 pmKey West
Oct 3
EYW3:12 pmKey West
27h 47m
2 stops
SAN3:59 pmSan Diego
$562
Find similar
United Airlines
Dec 15
SAN5:45 pmSan Diego
18h 24m
3 stops
EYW3:09 pmKey West
Dec 23
EYW4:10 pmKey West
20h 30m
2 stops
SAN9:40 amSan Diego
$577
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Delta flights from San Diego to Key West

Our best Delta deals on San Diego to Key West flight tickets
Delta
Dec 15
SAN8:00 amSan Diego
9h 03m
1 stop
EYW8:03 pmKey West
Dec 23
EYW6:20 pmKey West
8h 02m
1 stop
SAN11:22 pmSan Diego
$457
Find similar
Delta
Oct 4
SAN10:30 pmSan Diego
9h 25m
1 stop
EYW10:55 amKey West
Oct 7
EYW6:17 pmKey West
7h 57m
1 stop
SAN11:14 pmSan Diego
$465
Find similar
Delta
Sep 30
SAN8:00 amSan Diego
9h 07m
1 stop
EYW8:07 pmKey West
Oct 4
EYW2:00 pmKey West
8h 27m
1 stop
SAN7:27 pmSan Diego
$516
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momondo Fare Finder

 
Customize your flight search to find flights from San Diego 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 September 16, 2025.
Use the filters below to find and compare flights from San Diego to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Fri 1/23

9:22 pm-11:22 am

1 stop11h 00m

Key West

Tue 1/27

12:07 pm-8:08 pm

1 stop11h 01m

$339

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Wed 1/14

1:25 pm-11:59 pm

1 stop7h 34m

Key West

Tue 1/20

6:31 am-11:21 am

1 stop7h 50m

$389

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Thu 1/22

9:22 pm-11:22 am

1 stop11h 00m

Key West

Mon 1/26

12:07 pm-8:08 pm

1 stop11h 01m

$393

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Fri 10/3

1:35 pm-10:07 am

2 stops17h 32m

Key West

Mon 10/6

11:11 am-12:36 pm

1 stop28h 25m

$454

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Mon 12/15

8:00 am-8:03 pm

1 stop9h 03m

Key West

Tue 12/23

6:20 pm-11:22 pm

1 stop8h 02m

$457

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Sat 10/4

10:30 pm-10:55 am

1 stop9h 25m

Key West

Tue 10/7

6:17 pm-11:14 pm

1 stop7h 57m

$465

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Thu 10/23

1:21 pm-10:31 am

1 stop18h 10m

Key West

Sun 10/26

3:30 pm-8:08 pm

2 stops31h 38m

$474

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Sat 2/28

5:54 pm-12:46 pm

2 stops15h 52m

Key West

Sat 3/7

4:53 pm-7:30 am

2 stops17h 37m

$558

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Mon 9/29

8:08 pm-2:29 pm

2 stops15h 21m

Key West

Fri 10/3

3:12 pm-3:59 pm

2 stops27h 47m

$562

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Thu 11/20

2:11 pm-12:04 pm

3 stops18h 53m

Key West

Mon 11/24

11:26 am-12:10 am

2 stops15h 44m

$803

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from San Diego 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, September is the cheapest month to fly from San Diego to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $373. If you are unable to visit Key West during the month of September, then departing from San Diego during the month June is also very affordable. Most momondo users find prices during this month for around $375.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from San Diego is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $453. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from San Diego to Key West for around $676.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is in the evening. momondo users have found flights departing from San Diego to Key West in the evening for as low as $510. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the morning, with an average ticket price of $555. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on San Diego to Key West flights?

You could potentially save up to 31% on your flight if you consider stops on a San Diego to Key West flight.

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

As of September 2025, prices for San Diego to Key West flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from San Diego to Key West

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

Cheap San Diego to Key West (SAN to EYW) flight deals and tips

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

Direct flights

None
There are no direct flights from San Diego to Key West. There are no popular flight routes from San Diego to Key West.
Search flight deals

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

    Key West is 2204.3 mi away from San Diego. Typically, this will take 7h 01m by plane in normal conditions.

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

    Prices for flights from San Diego Airport to Key West Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Diego Airport to Key West Airport.

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

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from San Diego to Key West

Compare and see reviews for airlines that fly from San Diego to Key West with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $278Free CancellationRating
7.9
7,957 reviews
Search Delta flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
10,000 reviews
Search American 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 Diego to Key West?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Diego to Key West. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Key West from San Diego on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for San Diego to Key West flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Key West from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Key West trip

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