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 40% 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.

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

Allegiant Air and Spirit Airlines are the most popular carriers operating from Louisville Intl to Key West

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 January 2026, 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.

$131 Cheap Flights from Louisville to Key West in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Louisville to Key West

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:20 am - 1:45 pm

SDF

EYW

7h 25m

1 stop

6:34 pm - 11:03 pm

EYW

SDF

4h 29m

1 stop

$279American Airlines

Tue, Mar 10 - Tue, Mar 17

4:59 pm - 10:22 pm

SDF

EYW

5h 23m

1 stop

1:55 pm - 11:03 pm

EYW

SDF

9h 08m

2 stops

$284American Airlines

Wed, Feb 18 - Tue, Feb 24

10:31 am - 7:15 pm

SDF

EYW

8h 44m

2 stops

1:55 pm - 11:03 pm

EYW

SDF

9h 08m

2 stops

$290American Airlines

Wed, Feb 18 - Tue, Feb 24

3:33 pm - 1:30 pm

SDF

EYW

21h 57m

1 stop

2:25 pm - 2:38 pm

EYW

SDF

24h 13m

1 stop

$293Spirit Airlines

Thu, Feb 19 - Mon, Feb 23

3:33 pm - 11:56 pm

SDF

EYW

8h 23m

2 stops

4:37 pm - 11:59 pm

EYW

SDF

7h 22m

1 stop

$294American Airlines

Fri, Feb 6 - Mon, Feb 9

3:33 pm - 1:30 pm

SDF

EYW

21h 57m

1 stop

2:25 pm - 8:40 am

EYW

SDF

18h 15m

1 stop

$295Multiple Airlines

Thu, Feb 19 - Sun, Feb 22

3:33 pm - 1:30 pm

SDF

EYW

21h 57m

1 stop

2:25 pm - 8:40 am

EYW

SDF

18h 15m

1 stop

$296Multiple Airlines

Thu, Feb 19 - Sun, Feb 22

1:19 pm - 9:06 am

SDF

EYW

19h 47m

1 stop

2:25 pm - 12:21 pm

EYW

SDF

21h 56m

2 stops

$304Multiple Airlines

Wed, Feb 25 - Sun, Mar 1

1:19 pm - 1:30 pm

SDF

EYW

24h 11m

2 stops

2:25 pm - 2:38 pm

EYW

SDF

24h 13m

1 stop

$308Spirit Airlines

Wed, Feb 18 - Mon, Feb 23

12:00 pm - 1:30 pm

SDF

EYW

25h 30m

1 stop

12:38 pm - 1:26 pm

EYW

SDF

24h 48m

2 stops

$311Multiple Airlines

Sat, Feb 14 - Wed, Feb 18

Delta flights from Louisville to Key West

Our best Delta deals on Louisville to Key West flight tickets

Delta

Feb 9

SDF6:00 amLouisville Intl

6h 48m

1 stop

EYW12:48 pmKey West

Feb 14

EYW5:56 pmKey West

6h 02m

1 stop

SDF11:58 pmLouisville Intl

$379

Delta

Jan 19

SDF12:22 pmLouisville Intl

4h 49m

1 stop

EYW5:11 pmKey West

Jan 22

EYW12:20 pmKey West

4h 41m

1 stop

SDF5:01 pmLouisville Intl

$849

American Airlines flights from Louisville to Key West

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

American Airlines

Mar 10

SDF6:20 amLouisville Intl

7h 25m

1 stop

EYW1:45 pmKey West

Mar 17

EYW6:34 pmKey West

4h 29m

1 stop

SDF11:03 pmLouisville Intl

$279

American Airlines

Feb 18

SDF4:59 pmLouisville Intl

5h 23m

1 stop

EYW10:22 pmKey West

Feb 24

EYW1:55 pmKey West

9h 08m

2 stops

SDF11:03 pmLouisville Intl

$284

American Airlines

Feb 18

SDF10:31 amLouisville Intl

8h 44m

2 stops

EYW7:15 pmKey West

Feb 24

EYW1:55 pmKey West

9h 08m

2 stops

SDF11:03 pmLouisville Intl

$290

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Tue 3/10

6:20 am-1:45 pm

1 stop7h 25m

Key West

Tue 3/17

6:34 pm-11:03 pm

1 stop4h 29m

$279

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 2/18

4:59 pm-10:22 pm

1 stop5h 23m

Key West

Tue 2/24

1:55 pm-11:03 pm

2 stops9h 08m

$284

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 2/18

10:31 am-7:15 pm

2 stops8h 44m

Key West

Tue 2/24

1:55 pm-11:03 pm

2 stops9h 08m

$290

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 2/19

3:33 pm-1:30 pm

1 stop21h 57m

Key West

Mon 2/23

2:25 pm-2:38 pm

1 stop24h 13m

$293

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 2/6

3:33 pm-11:56 pm

2 stops8h 23m

Key West

Mon 2/9

4:37 pm-11:59 pm

1 stop7h 22m

$294

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 2/19

3:33 pm-1:30 pm

1 stop21h 57m

Key West

Sun 2/22

2:25 pm-8:40 am

1 stop18h 15m

$295

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 2/19

3:33 pm-1:30 pm

1 stop21h 57m

Key West

Sun 2/22

2:25 pm-8:40 am

1 stop18h 15m

$296

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 2/25

1:19 pm-9:06 am

1 stop19h 47m

Key West

Sun 3/1

2:25 pm-12:21 pm

2 stops21h 56m

$304

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 2/18

1:19 pm-1:30 pm

2 stops24h 11m

Key West

Mon 2/23

2:25 pm-2:38 pm

1 stop24h 13m

$308

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 2/14

12:00 pm-1:30 pm

1 stop25h 30m

Key West

Wed 2/18

12:38 pm-1:26 pm

2 stops24h 48m

$311

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

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 $338. 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 $358.

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 $412 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 $336 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	5h 00m
Direct flights	None

The fastest flight from Louisville to Key West takes 5h 00m

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 5h 00m.
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 January 2026, 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 (57% of total bookings). The next most popular airlines are Delta (39%) 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 9,163 reviews	Search United Airlines flights
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 8,051 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,136 reviews	Search American Airlines flights

Big Pine Key

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.