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

Allegiant Air, American Airlines, and Breeze Airways are the most popular carriers operating from Louisville Intl to Key West

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

Flights via Atlanta (ATL) offer the lowest average round-trip price of $392.

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 48% 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 has the shortest connection time from Louisville to Key West?

Atlanta (ATL) has the shortest average layover time for this route: 1h 07m.

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 travel time from Louisville to Key West?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 4h 34m.

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 August 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.

$157 Cheap Flights from Louisville to Key West (SDF-EYW) in 2025

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Find the cheapest flights from Louisville to Key West (SDF-EYW)

Round-trip

One-way

Last minute

Cheap round-trip flights

8:13 pm - 9:02 amSDF-EYW

12h 49m1 stop

9:31 pm - 8:35 pmEYW-SDF

23h 04m1 stop

$213Allegiant Air

Find Deal

Fri, Sep 19 - Fri, Sep 26

8:13 pm - 9:02 amSDF-EYW

12h 49m1 stop

4:50 pm - 1:39 pmEYW-SDF

20h 49m1 stop

$223Allegiant Air

Find Deal

Fri, Sep 19 - Thu, Sep 25

7:10 am - 1:02 pmSDF-EYW

5h 52m1 stop

7:00 am - 11:43 amEYW-SDF

4h 43m1 stop

$283Delta

Find Deal

Tue, Sep 16 - Tue, Sep 23

11:15 am - 6:59 pmSDF-EYW

7h 44m2 stops

7:31 pm - 11:58 pmEYW-SDF

4h 27m1 stop

$288American Airlines

Find Deal

Sat, Sep 13 - Wed, Sep 17

6:15 am - 2:11 pmSDF-EYW

7h 56m1 stop

3:50 pm - 10:57 pmEYW-SDF

7h 07m1 stop

$292United Airlines

Find Deal

Sat, Sep 6 - Tue, Sep 9

7:00 am - 5:46 pmSDF-EYW

10h 46m2 stops

11:25 am - 10:22 pmEYW-SDF

10h 57m2 stops

$293American Airlines

Find Deal

Sat, Sep 13 - Tue, Sep 16

9:31 pm - 10:19 amSDF-EYW

12h 48m2 stops

8:55 am - 10:57 pmEYW-SDF

14h 02m1 stop

$298

Find Deal

Sat, Oct 11 - Thu, Oct 16

3:15 pm - 2:40 pmSDF-EYW

23h 25m1 stop

8:55 am - 10:57 pmEYW-SDF

14h 02m1 stop

$307

Find Deal

Sat, Oct 11 - Thu, Oct 16

10:32 am - 5:12 pmSDF-EYW

6h 40m1 stop

6:10 pm - 11:52 pmEYW-SDF

5h 42m1 stop

$311Delta

Find Deal

Sat, Sep 20 - Tue, Sep 23

6:45 am - 2:09 pmSDF-EYW

7h 24m1 stop

4:00 pm - 5:16 pmEYW-SDF

25h 16m1 stop

$392United Airlines

Find Deal

Mon, Oct 27 - Fri, Oct 31

American Airlines flights from Louisville to Key West

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

American Airlines

Sep 13

SDF11:15 amLouisville Intl

7h 44m

2 stops

EYW6:59 pmKey West

Sep 17

EYW7:31 pmKey West

4h 27m

1 stop

SDF11:58 pmLouisville Intl

$288

Find similar

American Airlines

Sep 13

SDF7:00 amLouisville Intl

10h 46m

2 stops

EYW5:46 pmKey West

Sep 16

EYW11:25 amKey West

10h 57m

2 stops

SDF10:22 pmLouisville Intl

$293

Find similar

American Airlines

Sep 9

SDF7:45 amLouisville Intl

10h 01m

2 stops

EYW5:46 pmKey West

Sep 16

EYW2:30 pmKey West

7h 00m

1 stop

SDF9:30 pmLouisville Intl

$321

Find similar

Allegiant Air flights from Louisville to Key West

Our best Allegiant Air deals on Louisville to Key West flight tickets

Allegiant Air

Sep 19

SDF8:13 pmLouisville Intl

12h 49m

1 stop

EYW9:02 amKey West

Sep 26

EYW9:31 pmKey West

23h 04m

1 stop

SDF8:35 pmLouisville Intl

$213

Find similar

Allegiant Air

Sep 19

SDF8:13 pmLouisville Intl

12h 49m

1 stop

EYW9:02 amKey West

Sep 25

EYW4:50 pmKey West

20h 49m

1 stop

SDF1:39 pmLouisville Intl

$223

Find similar

Allegiant Air

Sep 19

SDF8:13 pmLouisville Intl

12h 49m

1 stop

EYW9:02 amKey West

Sep 25

EYW4:50 pmKey West

20h 49m

1 stop

SDF1:39 pmLouisville Intl

$224

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 9/19

8:13 pm-9:02 am

1 stop12h 49m

Key West

Fri 9/26

9:31 pm-8:35 pm

1 stop23h 04m

$213

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 9/19

8:13 pm-9:02 am

1 stop12h 49m

Key West

Thu 9/25

4:50 pm-1:39 pm

1 stop20h 49m

$223

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Tue 9/16

7:10 am-1:02 pm

1 stop5h 52m

Key West

Tue 9/23

7:00 am-11:43 am

1 stop4h 43m

$283

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 9/13

11:15 am-6:59 pm

2 stops7h 44m

Key West

Wed 9/17

7:31 pm-11:58 pm

1 stop4h 27m

$288

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 9/6

6:15 am-2:11 pm

1 stop7h 56m

Key West

Tue 9/9

3:50 pm-10:57 pm

1 stop7h 07m

$292

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 9/13

7:00 am-5:46 pm

2 stops10h 46m

Key West

Tue 9/16

11:25 am-10:22 pm

2 stops10h 57m

$293

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 10/11

9:31 pm-10:19 am

2 stops12h 48m

Key West

Thu 10/16

8:55 am-10:57 pm

1 stop14h 02m

$298

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 10/11

3:15 pm-2:40 pm

1 stop23h 25m

Key West

Thu 10/16

8:55 am-10:57 pm

1 stop14h 02m

$307

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 9/20

10:32 am-5:12 pm

1 stop6h 40m

Key West

Tue 9/23

6:10 pm-11:52 pm

1 stop5h 42m

$311

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Mon 10/27

6:45 am-2:09 pm

1 stop7h 24m

Key West

Fri 10/31

4:00 pm-5:16 pm

1 stop25h 16m

$392

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 $348. If you are unable to visit Key West during the month of August, then departing from Louisville during the month January is also very affordable. Most momondo users find prices during this month for around $379.

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 $420 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 $339 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

Best Price Found	$157
Fastest flight time	4h 23m
Direct flights	None
Airports in Key West	1 airport

The best one-way flight to Key West from Louisville in the past 72 hours is $157. The best round-trip flight deal from Louisville to Key West found on momondo in the last 72 hours is $213.

The fastest flight from Louisville to Key West takes 4h 23m

There are no direct flights from Louisville to Key West. Popular non-direct route for this connection is Louisville Intl Airport - Key West Airport.

There is 1 airport near Key West: Key West (EYW)

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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 23m.
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 August 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 (66% of total bookings). The next most popular airlines are Delta (32%) 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
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Delta	PriceFrom $258	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

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Little Torch Key

Why use momondo?

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 $157

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Key West departing on 11/7. 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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American Airlines flights from Louisville to Key West

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

Allegiant Air flights from Louisville to Key West

Our best Allegiant Air deals on Louisville to Key West flight tickets

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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?

Allegiant Air, American Airlines, and Breeze Airways 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 $392.

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 34m.

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

Atlanta (ATL) has the shortest average layover time for this route: 1h 07m.

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

Best Price Found

Fastest flight time

Direct flights

Airports in Key West

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