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

Currently priced at $461, United Airlines will fly you from San Diego to Key West and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Alaska Airlines - these airlines can fly you to your destination from $619 and $2,638, respectively. You may be able to fly from San Diego to Key West for 18% less than the average price by searching for these airlines.

What is the cheapest day to fly from San Diego to Key West?

Travelers seeking maximum savings on their San Diego to Key West flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from San Diego to Key West?

Wednesday flights are generally found to be more expensive for flights from San Diego to Key West. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Key West.

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

To save on the cost of your flight from San Diego to Key West, book at least 57 days before your planned departure. Booking around this time can save you about 84% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $497 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $497.

What is the cheapest month to fly from San Diego to Key West?

The best pricing can be found in the month of August. Prices to Key West from San Diego average $562. You can even find prices in August for less than $562, as users have found deals to Key West from as low as $283. The month of June appears to be one of the more expensive times to travel to Key West from San Diego. Flying in the targeted month can save you up to 27%.

What is the cheapest time of day to fly from SAN to EYW?

It’s optimal to fly from San Diego to Key West at noon. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight in the morning.

Most accurate provider : When it comes to deals on San Diego-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Key West flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Diego-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$125+ Flights from San Diego to Key West

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Find cheap flights from San Diego to Key West with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from San Diego to Key West are usually found in August or January, booked 62 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from San Diego to Key West

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$461 (United Airlines)
One-way from	$125 (American Airlines)
Popular in	June
Cheapest in	August
Average price	$644

Provider with most accurate pricing for San Diego-Key West flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Diego-Key West flights.

Search Deals

From San Diego to Key West

Search Deals

One-way flight from San Diego to Key West

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($43 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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 February 20, 2025.

Fri 4/2510:00 pmSAN - EYW

1 stop10h 15mUnited Airlines

Mon 4/287:40 pmEYW - SAN

2 stops23h 08mUnited Airlines

Deal found 2/20

$461

Sat 2/226:20 amSAN - EYW

1 stop8h 12mAmerican Airlines

Thu 2/2712:55 pmEYW - SAN

1 stop11h 10mAmerican Airlines

Deal found 2/20

$509

Thu 4/1010:45 amSAN - EYW

3 stops21h 56mAlaska Airlines

Mon 4/1412:16 pmEYW - SAN

3 stops27h 48mAlaska Airlines

Deal found 2/19

$2,638

Best flights from San Diego to Key West
Discover carefully curated flight deals from San Diego to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Fri 4/2510:00 pmSAN - EYW

1 stop10h 15mUnited Airlines

Mon 4/287:40 pmEYW - SAN

2 stops23h 08mUnited Airlines

Deal found 2/20

$461

Thu 4/107:30 amSAN - EYW

1 stop8h 25mAmerican Airlines

Mon 4/142:38 pmEYW - SAN

1 stop10h 16mAmerican Airlines

Deal found 2/19

$619

Thu 4/1010:45 amSAN - EYW

3 stops21h 56mAlaska Airlines

Mon 4/1412:16 pmEYW - SAN

3 stops27h 48mAlaska Airlines

Deal found 2/19

$2,638

Last-minute flights from San Diego to Key West
Discover last-minute flight deals from San Diego to Key West. Data last updated February 20, 2025 and is based on user searches.

Sat 2/226:20 amSAN - EYW

1 stop8h 12mAmerican Airlines

Thu 2/2712:55 pmEYW - SAN

1 stop11h 10mAmerican Airlines

Deal found 2/20

$509

Sun 2/236:50 pmSAN - EYW

2 stops13h 26mUnited Airlines

Sat 3/110:55 amEYW - SAN

2 stops13h 38mUnited Airlines

Deal found 2/20

$608

One-way flights from San Diego to Key West
Search for one-way flight options from San Diego to Key West. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Sat 5/1710:49 pmSAN - EYW

1 stop10h 21mAmerican Airlines

Deal found 2/20

$125

Sat 5/171:25 pmSAN - EYW

3 stops21h 55mUnited Airlines

Deal found 2/20

$276

Find flights from San Diego to Key West within your budget

Fly from

Fly to

Route

Depart

Return

Price

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Fri 4/25

10:00 pm-11:15 am

1 stop10h 15m

Key West

Mon 4/28

7:40 pm-3:48 pm

2 stops23h 08m

$461

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Thu 4/10

7:30 am-6:55 pm

1 stop8h 25m

Key West

Mon 4/14

2:38 pm-9:54 pm

1 stop10h 16m

$619

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Thu 4/10

10:45 am-11:41 am

3 stops21h 56m

Key West

Mon 4/14

12:16 pm-1:04 pm

3 stops27h 48m

$2,638

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Sat 5/17

10:49 pm-12:10 pm

1 stop10h 21m

$125

San DiegoKey West

SAN - EYW

SANEYW

San Diego

Sat 5/17

1:25 pm-2:20 pm

3 stops21h 55m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Compare providers for flights from San Diego to Key West

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Key West in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Diego-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Key West flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Diego-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from San Diego to Key West

Get recent, data-driven insights about flights from San Diego to Key West including ideal travel times, pricing trends, and more.

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

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 $510). 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.

Rainfall in Key West by month

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

Temperature in Key West by month

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Key West

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,692 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,766 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines flying from San Diego to Key West round-trip?
Currently priced at $461, United Airlines will fly you from San Diego to Key West and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Alaska Airlines - these airlines can fly you to your destination from $619 and $2,638, respectively. You may be able to fly from San Diego to Key West for 18% less than the average price by searching for these airlines.
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 $510). 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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Other flights to Key West

Top 2 airlines flying from San Diego to Key West

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$298	Average$564	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$308	Average$517	FlexibilityNo cancel fee	On-timeN/A

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$125+ Cheap flights from San Diego to Key West (SAN - EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Diego to Key West with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from San Diego to Key West are usually found in August or January, booked 62 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from San Diego to Key West

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from San Diego to Key West

Cheapest flights from San Diego to Key WestExplore 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 February 20, 2025.

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 February 20, 2025.

Find flights from San Diego to Key West within your budget

Compare providers for flights from San Diego to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Key West in February.

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.

Travel insights for flights from San Diego to Key West

Get recent, data-driven insights about flights from San Diego to Key West including ideal travel times, pricing trends, and more.

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 February 14, 2025.

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

Rainfall in Key West by month

Plan your trip to Key West by taking into account the average rainfall totals by month.

Temperature in Key West by month

Plan your trip to Key West by taking into account the average temperature totals by month.

Reviews of airlines servicing Key West

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?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from San Diego to Key West

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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 February 20, 2025.