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 41% 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.

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 December 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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Find the cheapest flights from Louisville to Key West

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One-way

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Cheap round-trip flights

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2:26 pm - 10:24 am

SDF

EYW

19h 58m1 stop

11:01 am - 8:37 pm

EYW

SDF

9h 36m1 stop

$221Multiple Airlines

Sun, Feb 8 - Thu, Feb 12

3:36 pm - 1:30 pm

SDF

EYW

21h 54m1 stop

10:06 am - 1:00 pm

EYW

SDF

26h 54m1 stop

$227Multiple Airlines

Thu, Jan 22 - Thu, Jan 29

3:36 pm - 1:30 pm

SDF

EYW

21h 54m1 stop

2:25 pm - 2:41 pm

EYW

SDF

24h 16m1 stop

$228Spirit Airlines

Thu, Jan 22 - Mon, Jan 26

3:36 pm - 9:09 am

SDF

EYW

17h 33m2 stops

10:27 pm - 10:07 am

EYW

SDF

11h 40m1 stop

$230Multiple Airlines

Thu, Jan 8 - Sun, Jan 11

2:26 pm - 10:24 am

SDF

EYW

19h 58m1 stop

2:25 pm - 11:05 am

EYW

SDF

20h 40m1 stop

$231Multiple Airlines

Sun, Feb 8 - Fri, Feb 13

3:36 pm - 1:30 pm

SDF

EYW

21h 54m1 stop

2:25 pm - 2:41 pm

EYW

SDF

24h 16m1 stop

$233Spirit Airlines

Thu, Jan 22 - Mon, Jan 26

3:36 pm - 10:09 am

SDF

EYW

18h 33m2 stops

11:01 am - 8:37 pm

EYW

SDF

9h 36m1 stop

$235Multiple Airlines

Tue, Feb 3 - Thu, Feb 12

10:57 am - 12:11 pm

SDF

EYW

25h 14m1 stop

3:09 pm - 8:37 pm

EYW

SDF

5h 28m1 stop

$237Allegiant Air

Fri, Feb 6 - Thu, Feb 12

6:54 pm - 10:09 am

SDF

EYW

15h 15m2 stops

10:27 pm - 10:07 am

EYW

SDF

11h 40m1 stop

$238Multiple Airlines

Fri, Jan 9 - Sun, Jan 11

3:36 pm - 1:30 pm

SDF

EYW

21h 54m1 stop

10:27 pm - 10:07 am

EYW

SDF

11h 40m1 stop

$244Multiple Airlines

Thu, Jan 8 - Sun, Jan 11

Spirit Airlines flights from Louisville to Key West

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

Spirit Airlines

Jan 22

SDF3:36 pmLouisville Intl

21h 54m

1 stop

EYW1:30 pmKey West

Jan 26

EYW2:25 pmKey West

24h 16m

1 stop

SDF2:41 pmLouisville Intl

$228

Find similar

Spirit Airlines

Jan 22

SDF3:36 pmLouisville Intl

21h 54m

1 stop

EYW1:30 pmKey West

Jan 26

EYW2:25 pmKey West

24h 16m

1 stop

SDF2:41 pmLouisville Intl

$233

Find similar

Spirit Airlines

Jan 2

SDF5:05 amLouisville Intl

8h 25m

1 stop

EYW1:30 pmKey West

Jan 6

EYW12:20 pmKey West

10h 29m

1 stop

SDF10:49 pmLouisville Intl

$300

Find similar

Allegiant Air flights from Louisville to Key West

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

Allegiant Air

Feb 6

SDF10:57 amLouisville Intl

25h 14m

1 stop

EYW12:11 pmKey West

Feb 12

EYW3:09 pmKey West

5h 28m

1 stop

SDF8:37 pmLouisville Intl

$237

Find similar

Allegiant Air

Jan 9

SDF10:57 amLouisville Intl

25h 14m

1 stop

EYW12:11 pmKey West

Jan 11

EYW10:27 pmKey West

11h 40m

1 stop

SDF10:07 amLouisville Intl

$251

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sun 2/8

2:26 pm-10:24 am

1 stop19h 58m

Key West

Thu 2/12

11:01 am-8:37 pm

1 stop9h 36m

$221

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 1/22

3:36 pm-1:30 pm

1 stop21h 54m

Key West

Thu 1/29

10:06 am-1:00 pm

1 stop26h 54m

$227

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 1/22

3:36 pm-1:30 pm

1 stop21h 54m

Key West

Mon 1/26

2:25 pm-2:41 pm

1 stop24h 16m

$228

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 1/8

3:36 pm-9:09 am

2 stops17h 33m

Key West

Sun 1/11

10:27 pm-10:07 am

1 stop11h 40m

$230

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sun 2/8

2:26 pm-10:24 am

1 stop19h 58m

Key West

Fri 2/13

2:25 pm-11:05 am

1 stop20h 40m

$231

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 1/22

3:36 pm-1:30 pm

1 stop21h 54m

Key West

Mon 1/26

2:25 pm-2:41 pm

1 stop24h 16m

$233

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Tue 2/3

3:36 pm-10:09 am

2 stops18h 33m

Key West

Thu 2/12

11:01 am-8:37 pm

1 stop9h 36m

$235

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 2/6

10:57 am-12:11 pm

1 stop25h 14m

Key West

Thu 2/12

3:09 pm-8:37 pm

1 stop5h 28m

$237

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 1/9

6:54 pm-10:09 am

2 stops15h 15m

Key West

Sun 1/11

10:27 pm-10:07 am

1 stop11h 40m

$238

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 1/8

3:36 pm-1:30 pm

1 stop21h 54m

Key West

Sun 1/11

10:27 pm-10:07 am

1 stop11h 40m

$244

Flights are sorted by cheapest round-trip flights first.

Sorted 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

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 February is also very affordable. Most momondo users find prices during this month for around $378.

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 $414 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 $311 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

Fastest flight time	4h 14m
Direct flights	None

The fastest flight from Louisville to Key West takes 4h 14m

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

Search flight deals

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 14m.
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 December 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 (58% of total bookings). The next most popular airlines are Delta (38%) and United Airlines (4%).

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 9,102 reviews	Search United Airlines flights
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,052 reviews	Search American Airlines flights

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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.