What is the cheapest airline that flies from Louisville Intl to Key West?

Spirit Airlines, United Airlines, and American Airlines are the most popular carriers operating from Louisville Intl to Key West

What airlines fly to Key West?

American Airlines, Allegiant Air and Delta are the top three most popular airlines that fly to Key West from Louisville according to our data. American Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Key West. Keep in mind that there are 4 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Louisville to Key West?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $350.

Which layover airport has the shortest travel time from Louisville to Key West?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 4h 38m.

Which airport is the most popular layover for flights between Louisville and Key West?

Atlanta (ATL) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Louisville to Key West?

Miami (MIA) has the shortest average layover time for this route: 1h 15m.

When did momondo last update prices for flights from Louisville Intl Airport to Key West Airport?

Prices for flights from Louisville Intl Airport to Key West Airport were last updated today.

How many operators does momondo search for flights from Louisville Intl Airport to Key West Airport?

As of November 2025, there are 3 operators available to choose from for flights from Louisville Intl Airport to Key West Airport.

How old do you have to be to fly from Louisville Intl Airport to Key West Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Key West Airport.

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

The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$202 Cheap Flights from Louisville to Key West in 2025/26

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Cheap round-trip flights

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3:28 pm - 1:30 pmSDF-EYW

22h 02m1 stop

10:27 pm - 10:07 amEYW-SDF

11h 40m1 stop

$226Multiple Airlines

Find Deal

Thu, Jan 8 - Thu, Jan 15

5:40 am - 12:34 pmSDF-EYW

6h 54m1 stop

4:15 pm - 10:30 pmEYW-SDF

6h 15m1 stop

$259United Airlines

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Sat, Jan 3 - Sat, Jan 24

9:33 am - 2:34 pmSDF-EYW

5h 01m1 stop

10:32 pm - 7:23 pmEYW-SDF

20h 51m1 stop

$262Allegiant Air

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Sun, Dec 21 - Tue, Dec 23

5:40 am - 3:48 pmSDF-EYW

10h 08m2 stops

4:15 pm - 10:30 pmEYW-SDF

6h 15m1 stop

$264United Airlines

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Sat, Jan 3 - Sat, Jan 24

2:55 pm - 10:31 amSDF-EYW

19h 36m1 stop

11:11 am - 2:15 pmEYW-SDF

27h 04m1 stop

$265Breeze Airways

Find Deal

Thu, Nov 20 - Mon, Nov 24

6:48 pm - 9:17 amSDF-EYW

14h 29m2 stops

11:11 am - 2:15 pmEYW-SDF

27h 04m1 stop

$273Multiple Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

3:34 pm - 7:42 pmSDF-EYW

4h 08m1 stop

7:10 am - 2:36 pmEYW-SDF

7h 26m1 stop

$283Delta

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Thu, Feb 19 - Tue, Feb 24

8:07 am - 6:01 pmSDF-EYW

9h 54m2 stops

6:06 am - 3:52 pmEYW-SDF

9h 46m2 stops

$293American Airlines

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Wed, Jan 14 - Sat, Jan 17

12:36 pm - 7:42 pmSDF-EYW

7h 06m1 stop

6:08 pm - 11:55 pmEYW-SDF

5h 47m1 stop

$311Delta

Find Deal

Wed, Jan 7 - Sun, Jan 11

7:40 am - 4:49 pmSDF-EYW

9h 09m2 stops

2:00 pm - 9:16 pmEYW-SDF

7h 16m1 stop

$316American Airlines

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Wed, Jan 7 - Sun, Jan 11

United Airlines flights from Louisville to Key West

Our best United Airlines deals on Louisville to Key West flight tickets

United Airlines

Jan 3

SDF5:40 amLouisville Intl

6h 54m

1 stop

EYW12:34 pmKey West

Jan 24

EYW4:15 pmKey West

6h 15m

1 stop

SDF10:30 pmLouisville Intl

$259

Find similar

United Airlines

Jan 3

SDF5:40 amLouisville Intl

10h 08m

2 stops

EYW3:48 pmKey West

Jan 24

EYW4:15 pmKey West

6h 15m

1 stop

SDF10:30 pmLouisville Intl

$264

Find similar

United Airlines

Jan 3

SDF5:40 amLouisville Intl

6h 54m

1 stop

EYW12:34 pmKey West

Jan 24

EYW4:15 pmKey West

6h 15m

1 stop

SDF10:30 pmLouisville Intl

$299

Find similar

Delta flights from Louisville to Key West

Our best Delta deals on Louisville to Key West flight tickets

Delta

Feb 19

SDF3:34 pmLouisville Intl

4h 08m

1 stop

EYW7:42 pmKey West

Feb 24

EYW7:10 amKey West

7h 26m

1 stop

SDF2:36 pmLouisville Intl

$283

Find similar

Delta

Jan 7

SDF12:36 pmLouisville Intl

7h 06m

1 stop

EYW7:42 pmKey West

Jan 11

EYW6:08 pmKey West

5h 47m

1 stop

SDF11:55 pmLouisville Intl

$311

Find similar

Delta

Jan 8

SDF12:36 pmLouisville Intl

7h 06m

1 stop

EYW7:42 pmKey West

Jan 11

EYW6:08 pmKey West

5h 47m

1 stop

SDF11:55 pmLouisville Intl

$339

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 1/8

3:28 pm-1:30 pm

1 stop22h 02m

Key West

Thu 1/15

10:27 pm-10:07 am

1 stop11h 40m

$226

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 1/3

5:40 am-12:34 pm

1 stop6h 54m

Key West

Sat 1/24

4:15 pm-10:30 pm

1 stop6h 15m

$259

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sun 12/21

9:33 am-2:34 pm

1 stop5h 01m

Key West

Tue 12/23

10:32 pm-7:23 pm

1 stop20h 51m

$262

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 1/3

5:40 am-3:48 pm

2 stops10h 08m

Key West

Sat 1/24

4:15 pm-10:30 pm

1 stop6h 15m

$264

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 11/20

2:55 pm-10:31 am

1 stop19h 36m

Key West

Mon 11/24

11:11 am-2:15 pm

1 stop27h 04m

$265

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 11/20

6:48 pm-9:17 am

2 stops14h 29m

Key West

Mon 11/24

11:11 am-2:15 pm

1 stop27h 04m

$273

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 2/19

3:34 pm-7:42 pm

1 stop4h 08m

Key West

Tue 2/24

7:10 am-2:36 pm

1 stop7h 26m

$283

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 1/14

8:07 am-6:01 pm

2 stops9h 54m

Key West

Sat 1/17

6:06 am-3:52 pm

2 stops9h 46m

$293

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 1/7

12:36 pm-7:42 pm

1 stop7h 06m

Key West

Sun 1/11

6:08 pm-11:55 pm

1 stop5h 47m

$311

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 1/7

7:40 am-4:49 pm

2 stops9h 09m

Key West

Sun 1/11

2:00 pm-9:16 pm

1 stop7h 16m

$316

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How to get the cheapest flight ticket from Louisville 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

Prices

Airlines

Layovers

What is the cheapest month to fly to Key West?

In general, August is the cheapest month to fly from Louisville to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $331. If you are unable to visit Key West during the month of August, then departing from Louisville during the month October is also very affordable. Most momondo users find prices during this month for around $388.

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 Louisville is on a Saturday. momondo users have found tickets for Saturday departures for as low as $373. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Louisville to Key West for around $482.

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 at noon. momondo users have found flights departing from Louisville to Key West at noon for as low as $335. 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 afternoon, with an average ticket price of $399. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Key West from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $425 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Louisville for as low as $329 on momondo.

When to book flights from Louisville to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Key West according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Key West (SDF to EYW) flight deals and tips

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

Direct flights	None

There are no direct flights from Louisville to Key West. There are no popular flight routes from Louisville to Key West.

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How far is Louisville Intl to Key West by plane?
Louisville Intl and Key West are 973.5 mi apart from one another. In terms of flight time, this usually takes a little over 4h 08m.
When did momondo last update prices for flights from Louisville Intl Airport to Key West Airport?
Prices for flights from Louisville Intl Airport to Key West Airport were last updated today.
How many operators does momondo search for flights from Louisville Intl Airport to Key West Airport?
As of November 2025, there are 3 operators available to choose from for flights from Louisville Intl Airport to Key West Airport.
How old do you have to be to fly from Louisville Intl Airport to Key West Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Louisville to Key West?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Key West is American Airlines (62% of total bookings). The next most popular airlines are Delta (35%) and United Airlines (3%).

Best airlines flying from Louisville to Key West

Compare and see reviews for airlines that fly from Louisville to Key West with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
United Airlines	PriceFrom $328	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights

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Why should I use momondo to find a flight deal from Louisville to Key West?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Louisville to Key West. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Louisville to Key West on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from Louisville.

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

If you are simply researching potential flights to Key West, momondo offers a useful price alert feature which will track prices for flights to Key West from Louisville and alert you when they change.

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Louisville to Key West from $226

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Key West departing on 1/8. 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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How to get the cheapest flight ticket from Louisville 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?

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

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

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

What is the cheapest airline that flies from Louisville Intl to Key West?

Spirit Airlines, United Airlines, and American Airlines are the most popular carriers operating from Louisville Intl to Key West

What airlines fly to Key West?

Which airport is the most popular layover for flights between Louisville and Key West?

Atlanta (ATL) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Louisville to Key West?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $350.

Which layover airport has the shortest travel time from Louisville to Key West?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 4h 38m.

Which layover airport has the shortest connection time from Louisville to Key West?

Miami (MIA) has the shortest average layover time for this route: 1h 15m.

When to book flights from Louisville to Key West

Cheap Louisville to Key West (SDF to EYW) flight deals and tips

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

Direct flights

How far is Louisville Intl to Key West by plane?

When did momondo last update prices for flights from Louisville Intl Airport to Key West Airport?

How many operators does momondo search for flights from Louisville Intl Airport to Key West Airport?

How old do you have to be to fly from Louisville Intl Airport to Key West Airport?

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

What is the most popular airline from Louisville to Key West?

Best airlines flying from Louisville to Key West

Compare and see reviews for airlines that fly from Louisville to Key West with momondo

Traveling to a place near Key West?

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Key West?

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

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

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

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Florida