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Key West

$309+ Cheap flights from San Diego to Key West (SAN - EYW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — EYW
jul. 1 — jul. 81
mar. 7/1
mar. 7/8
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Key West are usually found in August or June, booked 63 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from San Diego to Key West

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 junio 26, 2025.

Round-trip from

$309
(Delta)

Popular in

July

Cheapest in

August

Average price

$403
From San Diego to Key West
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from San Diego to Key West

Cheapest flights from San Diego to Key West
Explore the most affordable flight options available from San Diego to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 26, 2025.

This Delta deal was found by Cheapflights users on 6/25. 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.
vie. 9/1210:40 pmSAN - EYW
1 stop9h 19mDelta
lun. 9/156:00 pmEYW - SAN
1 stop7h 59mDelta
Deal found 6/25$309
This American Airlines deal was found by Cheapflights users on 6/24. 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.
jue. 8/710:30 pmSAN - EYW
1 stop11h 02mAmerican Airlines
jue. 8/142:31 pmEYW - SAN
1 stop8h 34mAmerican Airlines
Deal found 6/24$368
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/287:01 pmSAN - EYW
2 stops18h 50mMultiple Airlines
dom. 8/314:36 pmEYW - SAN
3 stops41h 45mMultiple Airlines
Deal found 6/25$405
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/85:15 pmSAN - EYW
2 stops17h 49mUnited Airlines
jue. 12/184:05 pmEYW - SAN
1 stop8h 42mUnited Airlines
Deal found 6/24$507
This JetBlue deal was found by Cheapflights users on 6/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/148:35 pmSAN - EYW
1 stop12h 20mJetBlue
jue. 12/1812:07 pmEYW - SAN
1 stop11h 01mJetBlue
Deal found 6/24$582
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2011:49 amSAN - EYW
2 stops22h 58mAlaska Airlines
sáb. 10/2512:11 pmEYW - SAN
2 stops24h 19mAlaska Airlines
Deal found 6/24$757
This KAYAK deal was found by Cheapflights users on 6/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/121:12 pmSAN - EYW
2 stops42h 07mBreeze Airways
lun. 9/1512:32 pmEYW - SAN
3 stops27h 04mBreeze Airways
Deal found 6/26$1,008

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated junio 26, 2025.
Use the filters below to find and compare flights from San Diego to Key West that are best for you.

Fly from

San Diego

Fly to

Key West

Route

Depart

Return

Price

San DiegoKey West

SAN - EYW

SANEYW

San Diego

vie. 9/12

10:40 pm-10:59 am

1 stop9h 19m

Key West

lun. 9/15

6:00 pm-10:59 pm

1 stop7h 59m

$309

San DiegoKey West

SAN - EYW

SANEYW

San Diego

jue. 8/7

10:30 pm-12:32 pm

1 stop11h 02m

Key West

jue. 8/14

2:31 pm-8:05 pm

1 stop8h 34m

$368

San DiegoKey West

SAN - EYW

SANEYW

San Diego

jue. 8/28

7:01 pm-4:51 pm

2 stops18h 50m

Key West

dom. 8/31

4:36 pm-7:21 am

3 stops41h 45m

$405

San DiegoKey West

SAN - EYW

SANEYW

San Diego

lun. 12/8

5:15 pm-2:04 pm

2 stops17h 49m

Key West

jue. 12/18

4:05 pm-9:47 pm

1 stop8h 42m

$507

San DiegoKey West

SAN - EYW

SANEYW

San Diego

dom. 12/14

8:35 pm-11:55 am

1 stop12h 20m

Key West

jue. 12/18

12:07 pm-8:08 pm

1 stop11h 01m

$582

San DiegoKey West

SAN - EYW

SANEYW

San Diego

lun. 10/20

11:49 am-1:47 pm

2 stops22h 58m

Key West

sáb. 10/25

12:11 pm-9:30 am

2 stops24h 19m

$757

San DiegoKey West

SAN - EYW

SANEYW

San Diego

vie. 9/12

1:12 pm-10:19 am

2 stops42h 07m

Key West

lun. 9/15

12:32 pm-12:36 pm

3 stops27h 04m

$1,008

San DiegoKey West

SAN - EYW

SANEYW

San Diego

sáb. 11/22

10:15 pm-11:10 am

1 stop9h 55m

$399

San DiegoKey West

SAN - EYW

SANEYW

San Diego

sáb. 11/22

10:23 am-2:09 pm

2 stops24h 46m

$438

San DiegoKey West

SAN - EYW

SANEYW

San Diego

sáb. 11/22

1:46 pm-11:40 am

3 stops18h 54m

$472

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Best time to book a flight from San Diego to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from San Diego 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 Diego to Key West

How far ahead should I book a flight from San Diego to Key West?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Key West. Price data was last updated on June 20, 2025.

The price you pay for your flight from San Diego to Key West may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Diego to Key West?

Currently, August is the cheapest month in which you can book a flight from San Diego to Key West (average of $328). Flying from San Diego to Key West in March is currently the most expensive (average of $493). 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.

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 junio 26, 2025.
Read reviews from past customers who have flown Breeze Airways, Alaska Airlines, and Delta from San Diego to Key West. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
182 reviews

Entertainment

6.6

Boarding

8.4

Overall

8.1

Crew

8.8

Food

6.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
182 reviews
Breeze Airways
8.1
Very good
182 reviews

Entertainment

6.6

Boarding

8.4

Overall

8.1

Crew

8.8

Food

6.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Alaska Airlines
8.0
Very good
10,000 reviews
Breeze Airways
8.1
Very good
182 reviews

Entertainment

6.6

Boarding

8.4

Overall

8.1

Crew

8.8

Food

6.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,963 reviews
Breeze Airways
8.1
Very good
182 reviews

Entertainment

6.6

Boarding

8.4

Overall

8.1

Crew

8.8

Food

6.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
United Airlines
7.4
Good
8,838 reviews
Breeze Airways
8.1
Very good
182 reviews

Entertainment

6.6

Boarding

8.4

Overall

8.1

Crew

8.8

Food

6.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
JetBlue
7.3
Good
2,922 reviews
Breeze Airways
8.1
Very good
182 reviews

Entertainment

6.6

Boarding

8.4

Overall

8.1

Crew

8.8

Food

6.8

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from San Diego to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from San Diego to Key West round-trip?

    Currently priced at $309, Delta will fly you from San Diego to Key West and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $368 and $507, respectively. You may be able to fly from San Diego to Key West for 38% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Diego to Key West one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $399. United Airlines flights start at $438 while deals on Alaska Airlines start at $472 one-way.

  • Can I find deals for flights from San Diego to Key West that include hotel bookings?

    Yes. In addition to deals on San Diego to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego 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 Diego to Key West.

  • Can I find deals for business class flights from San Diego to Key West?

    Yes. Cheapflights offers flight deals from San Diego 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 Diego to Key West?

    Currently, August is the cheapest month in which you can book a flight from San Diego to Key West (average of $328). Flying from San Diego to Key West in March is currently the most expensive (average of $493). 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 2 airlines flying from San Diego to Key West

Discover the top 2 airlines that operate flights from San Diego 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 junio 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$464FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$549FlexibilityNo cancel feeOn-time71%

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